55 


Mr. J. S. Baly on new Phytophagous Insects . 

Medusa, conspicuous through the walls of the gonophore by the 
fine carmine-coloured bands by which the inner surface of the 
stomach is marked. 

When the Medusa escapes from the gonophore, it is seen to 
present a structure which is very peculiar. The umbrella is of 
a nearly spherical form, with two marginal tentacles continuous 
with two opposite radiating canals. A small bulbous dilatation 
is situated at the intersection of each of the other two marginal 
canals with the circular canal, but no tentacle is here developed. 
There is a wide velum. The manubrium is well developed, of a 
nearly cylindrical shape ; and the mouth is not furnished with 
lobes or tentacles. 

The structure of the two marginal tentacles is very remark- 
able. Each commences with a wide bulbous dilatation con- 
taining reddish pigment-granules, and is then, for the remainder 
of its length, closely set along its external side with pedunculated 
oval sacs filled with thread-cells. 

Another striking peculiarity in the Medusa consists in a csecal 
tube which is given off from each of the tentacular bulbs, and 
then running in the substance of the umbrella, close upon 
its outer surface and exactly parallel with the corresponding 
radiating canal, becomes slightly dilated as it proceeds, and 
terminates, after a short course, in a blind extremity. An 
exactly similar tube is given off from each of the two interme- 
diate bulbs. The contents of these caeca are a clear fluid with 
thread-cells. 

I propose for the Coryne here described the specific name of 
Briareus. 


VI . — Descriptions of new Genera and Species of Phytophagous 
Insects. By J. S. Baly, Esq. 

Fam. Chrysomelidae. 

Genus Doryphora, Illig. 

Doryphora dilaticollis (Dej.). 

D. oblonga, convexa, nitido-viridi-aenea, caeruleo-micans ; thorace 
utrinque foveolato, subremote punctato, utroque latere in laminam 
obliquam subacutam producto ; elytris suberebre punctatis, punc- 
tis obsolete subseriatim dispositis, interstitiis aciculato-reticulatis. 

( Fcem .) Thoracis lateribus non dilatatis, rotundatis, antice an- 
gustatis. — Long. 8 lin. 

Hab . Brazil. 

Doryphora ccerulea. 

D. oblonga, convexa, nitido-caerulea ; thorace remote punctato, ely- 


56 


Mr. J. S. Baly on new Phytophagous Insects . 

tris paullo latiore, lateribus dilatatis, rotundatis ; elytris subseria- 
tim punctatis, remote reticulato-aciculatis. 

( Fcem .) Thorace elytris angustiori, lateribus rotundatis. — Long, 
lin. 

Hab. Ega, Upper Amazons. 

Differing from D. sappharina , Eorst., to which insect it is 
most nearly allied, by its much broader thorax : in the latter 
insect the thorax is considerably narrower than the elytra, the 
sides at the same time being straight, and rounded at their apex 
only. 

Doryphora cardinal is. 

D . late ovata, valde convexa, obscure senea, corpore subtus antennis- 
que nigro-seneis, his extrorsum nigris ; capite subremote tenuiter 
punctato, inter oculos unifoveolato j labri margine flavo ; thorace 
longitudine triplo latiore, disco utrinque foveolato, remote tenuiter, 
lateribus subremote subfortiter punctato ; elytris subseriatim punc- 
tatis, rufo-fulvis, sutura et margine laterali anguste, fasciisque tri- 
bus e maculis oblongis, seiieis, harum prima ante, secunda prope, 
tertiaque obliqua pone medium positis. — Long. 8-8£ lin. 

Hab . Venezuela. 

Doryphora congener . 

D. ovata, convexa, pallide viridis, antennis extrorsum nigris ; femo- 
ribus spinaque obscure flavis; thorace longitudine plus duplo 
latiore, subremote tenuiter punctato ; elytris tenuiter seriatim 
punctatis, punctis in striis confuse gemellato-dispositis, striis disco 
exteriori confusis. — Long. 51 lin. 

Hab . Venezuela. 

Doryphora Jekelii. 

D. ovate convexa, nitido-cuprea, subtus obscurior ; capite thoraceque 
punctis distinctis sparse liic illic impressis ; elytris remote tenuiter 
punctatis, irregulariter strigosis, utrisque seriebus 10 (prima ab- 
breviata) e punctis distantibus majoribus impressis. — Long. 6 lin. 
Hab . Columbia. 

Doryphora lurida. 

D . late oblonga, convexa, nitido-nigro-eenea ; thorace elytrorum lati- 
tudine, punctis magnis sparse hie illic fortiter impresso, punctis 
ad latera subvariolosis ; elytris rufo-fulvis, punctis magnis nigro- 
eeneis irregulariter, prope suturam subseriatim, impressis, utrisque 
fasciis tribus nigro-eeneis, prima ante, secunda vix pone, tertiaque 
pone medium positis, ilia transversa extrorsum, his obliquis, minus 
distinctis, utrinque abbreviatis. — Long. 8-9 lin. 

Hab . Napo. 

Doryphora amabilis . 

i). oblongo-ovata, convexa, nitido-fulva, antennarum apice fusco ; 


57 


Mr. J. S. Baly on new Phytophagous Insects . 

capite thoraceque irrcgulariter punctatis, utrisque maculis quatuor 
(in hoc transversim positis), ely trisque fusco-seneis, his subseriatim 
punctatis, limbo fulvo. — Long. 4 lin. 

Hab . Amazons. 

j Doryphora miniata . 

D . breviter ovata, convexa, obscure rufo-fulva ; elytris striato-, disco 
exteriori irregulariter-punctatis, fusco-seneis, vitta submarginali, 
vitta subsuturali postice, primse apice confluente, puncto subbasali 
prope suturam, fasciaque brevi centrali, fulvis ; femoribus obsolete 
fusco-senco-maculatis. — Long. 5 lin, 

Hab . Peru. 

Doryphora Stcilii . 

Doryphora Bohemanni, Baly, Trans. Ent. Soc. Lond. vol. iv. n. s. p. 344, 
1858, nec Stal. 

Doryphora pluviata . 

Doryphora irrorata , Baly, Trans. Ent. Soc. Lond. vol. iv. n. s. p. 346, 1858, 
nec Stal. 

The names of the two preceding insects having been used by 
Herr Stal in his recent paper on Doryphora , published at Stock- 
holm in the same year, but several months previous to mine, I 
am compelled to change them. 

Doryphora Fryella , Baly. 

Doryphora flavocincta , Baly, Trans. Ent. Soc. Lond. vol. iv. n. s. p. 347, 
nec Guerin. 

It also becomes necessary to alter the name of this species, it 
having been made use of by Guerin in 1855. 

Genus Cryptostetha, Baly. 

Cryptostetha suturalis . 

C. oblongo-ovata, convexa, dorso prope medium obsolete gibbosa, ob- 
scure senea ; thorace subopaco, lateribus rotundato, dorso sparse 
hie illic fortiter punctato; elytris fortiter punctatis, punctis ad 
latera irregulariter confluentibus, interstitiis elevatis, fulvis, sutura 
(hac basi dilatata), margine laterali maculisque obscure seneis. — 
Long. 6 lin. 

Hab . Brazil. 

Differently coloured, and the elytra more coarsely and deeply 
punctured than Cryptostetha marmorata ; also more convex. 

Cryptostetha eenea . 

C. oblongo-ovata, convexa, dorso prope medium obsolete gibbosa, 
viridi- aut cseruleo-senea, liitida, puncto frontali fulvo; thorace 
subopaco, remote tenuissime punctato, basi margineque laterali 


58 


Mr. J. S. Baly on new Phytophagous Insects . 


rotundato, magis distincte punctatis ; elytris subcrebre fortiter 
punctatis, punctis aciculatis, interstitiis elevatis. — Long. 

Hah . Brazil. 

Cryptostetha rujipennis. 

C. ovata, convexa, nigra, nitida, puncto frontali elytrisque testaceis, 
his tenuiter subseriatim punctatis, punctis ad latera confusis, inter- 
stitiis obsolete strigosis ; thorace longitudine duplo latiore, remote 
tenuiter punctato, Jateribus fere rectis, antice angustato-rotundatis. 
— Long. 6 lin. 

Hah . Brazil. 

Genus Elytrosphcera, Blanch. 

Elytrosphcera flavipennis, Dej. MSS. 

E. oblonga, convexa, nitido-purpurea ; thorace fortiter et irregulariter 
punctato, punctis (praesertim ad latera) varioloso-confluentibus ; 
elytris ovatis, valde convexis, fulvis, utrisque sulcis 1 1, primo ab- 
breviate, horum singulis serie unica punctorum magnorum im- 
pressis, interstitiis elevatis, convexis ; abdomine subcrebre punc- 
tato, segmento anali fulvo. — Long. 6-6£ lin. 

Hah. Brazil. 

This common insect, although well known by collectors under 

the above name, has not as yet been described. 

Elytrosphcera Dejeanii. 

E . oblongo-ovata, convexa, obscure metallico-viridis, nitida, abdo- 
minis segmento anali elytrisque fulvis, his ovatis, convexis, utris- 
que seriebus lie punctis magnis subremotis impressis, prima ab- 
breviata ; thorace hie illic fortiter punctato. — Long. 5 lin. 

Hah . Brazil. 

Elytrosphcera confusa . 

E. oblonga, convexa, obscure nigro-senea, nitida ; elytris rufo-fulvis, 
ovatis, valde convexis, subseriatim, disco confuse punctato-sulcatis, 
punctis fortiter impressis, aeneo-micantibus, interstitiis elevatis, 
subtuberculatis ; thorace longitudine vix dimidio latiore, fortiter 
punctato, punctis irregulariter confluentibus. — Long. 5-6 lin. 

Hah . Brazil. 

Elytrosphcera luridipennis. 

E. oblonga, convexa, nigro-senea, nitida; thorace longitudine fere 
duplo latiore, lateribus hie illic sparse confluento-punctatis ; elytris 
obscure rufis, oblongo- ovatis, convexis, fortiter subseriatim, apicem 
versus confuse, punctatis, interstitiis subelevatis. — Long. 6 lin. 

Hah . Brazil. 

Genus Stilodes, Chevr. MSS. 

Caput subdeclive, thoraci ad oculorum marginem insertum ; anten - 
nis capite cum thorace vix longioribus, modice robustis, subfili- 


59 


Mr. J. S. Baly on new Phytophagous Insects . 

formibus, ad apicem leniter compressis et incrassatis, articulo 
primo incrassato, secundo brevi, tertio elongato, cmteris inter se 
sequalibus, perparum leniter incrassatis ; palpis maxillaribus leni- 
ter compressis, clavatis, articulo penultimo obconico, ultimo vix 
latiore, hoc brevi, transverso, apice truncato. Thorax transversus, 
apice late emarginatus. Elytra breviter ovata aut obovata, con- 
vexa, thorace latiora, postice soepe paullo angustata. Pedes sim- 
plices. Mesosternum transversum, obliquum. Corpus ovatum, 
convexum. 

Type, Stilodes guttata, Baly. 

Nearly allied in form to Chrysomela , but easily separated from 

that genus by the different form of the maxillary palpi together 

with the shorter antennae. 

Stilodes guttata. 

S . ovata, convexa, rufo-fulva, nitida, oculis mandibularumque apice 
nigris; thorace longitudine fere triplo latiore, evidenter remote 
punctato, punctis ad latera majoribus, valde impressis ; elytris 
breviter ovatis, postice vix angustatis, convexis, utrisque lineis 1 1 
e punctis impressis, harum prima abbreviata; maculis 8 fulvis 
instructis, duabus basalibus, duabus ante medium oblique, duabus 
pone medium transversim, duabusque apicem versus longitudina- 
liter, positis. — Long. 4 lin. 

Hab . Upper Amazons. 

Stilodes obsoleta. 

S. ovata, convexa, postice paullo angustata, nitido-rufo-fulva, anten- 
nis extrorsum nigris ; thorace longitudine plus duplo latiore, remote 
tenuiter, lateribus magis distincte punctato ; elytris seriatim punc- 
tatis, utrisque maculis septem obsolete fulvis, duabus baseos, 
duabus ante, duabus pone medium et una ante apicem, positis. — 
Long. 4 lin. 

Hab. Ega, Upper Amazons. 

Narrower than the preceding species. 

Stilodes fenestrata. 

S . ovata, convexa, fulva, nitida ; thorace subremote punctato, nigro, 
lateribus fulvis ; elytris breviter ovatis, postice paullo angustatis, 
convexis, utrisque lineis 11 e punctis leniter impressis, harum 
prima abbreviata, punctis in striis confuse dispositis ; plagis magnis 
tribus superficiem fere amplectentibus, nigris, prima transversa 
basi, secunda late transversa supra medium, tertiaque trigona api- 
cem versus, positis, pleuris remote punctatis, nigris.- — Long. 4 lin. 

Hab . San Paulo, Upper Amazons. 

Stilodes annuligera (Erichs.). 

Deuterocampta annuligera , Erichs. Consp. Ins. Peru. p. 157, 184/. 

S. ovata, convexa, postice paullo angustata, fulvo-rufa, nitida ; thorace 


60 


Mr. J. S. Baly on new Phytophagous Insects. 

disco subremote tenuiter, lateribus subvariolo-punctato ; elytris 
seriatim punctatis, obscurioribus, utrisque annulis duobus magnis 
linea longitudinali prope suturam connexis, prima basi, altera vix 
ante apicem positis, fulvis. — Long. 3£ lin. 

Hah. Amazons. 

Stilodes quadriguttata. 

S. ovata, convexa, nitido-nigro-cyanea, antennarum basi fulva ; tlio- 
race tenuiter punctato ; elytris purpureis, regulariter seriatim 
punctatis, utrisque maculis duabus, prima baseos obliqua, altera 
ante apicem transversa, ad marginem exteriorem adfixa, fulvis. — 
Long. 4 lin. 

Hah . Amazons. 

Stilodes scenica. 

S. breviter ovata, convexa, obscure rufa; tborace aeneo obsolete 
micante, disco remote tenuiter, lateribus suberebre magis distincte, 
punctato ; elytris flavis, utrisque lineis lie punctis (harum prima 
abbreviata) instructis ; sutura, vitta marginali antica maculisque 
oblongis tribus vix infra basin ad paullo ultra medium triangula- 
riter dispositis, obscure aeneis. — Long. 4^ lin. 

Hah. Brazil. 

Stilodes histrio . 

S. ovata, convexa, postice vix angustata, rufo-fulva, nitida ; antennis 
extrorsum nigris ; abdominis segmentorum margine, pleuris, tibi- 
arum apice, et capitis thoracisque maculis, obscure aeneis ; elytris 
regulariter seriatim punctatis, flavis, sutura antice, maculis duabus 
baseos vittulisque obscure aeneis (vittulis interstitiis alternis, dis- 
positis, fascias transversas duas formantibus) ; thorace basi lateri- 
busque distincte punctato, maculis aeneis inter se confluentibus 
seriebus duabus transversis dispositis. — Long. 4 % lin. 

Hah. Brazil. t 

Stilodes cruciata . 

S. ovata, convexa, nigro-aenea, nitida ; antennis nigris, basi piceis ; 
thorace longitudine plus duplo latiore, subremote punctato ; elytris 
seriatim, disco exteriore confuse, punctatis, nitido-luteis, vitta 
suturali apice dilatata fasciaque transversa prope medium nigris. 
— Long. 3i lin. 

Hah. Columbia. 


Genus Lina, Megerle. 

Lina Templetoni . 

L. breviter ovata, postice paullo ampliata, valde convexa, nitido- 
cyanea, abdomine, pedibus capiteque seneo-micantibus, antennis 
nigris ; thorace longitudine vix duplo latiore, utriiique foveolato, 
disco obsolete, angulis posticis varioloso -punctato, lateribus sub- 
incrassatis, postice sinuatis, antice ampliato-rotundatis ; elytris 
rufo-testaceis, thorace multo latioribus, valde inflatis, lsevibus, 


Mr. J. S. Baly on new Phytophagous Insects. 61 

lateribus infra humeros leniter transversim excavatis. — Long. 
5^ lin. 

Hab . Ceylon. 

Closely allied to Lina Rayah, but easily distinguished from 
that insect by its smaller size and perfectly smooth elytra. My 
specimen has the elytra stained with numerous small rufo-piceous 
points irregularly arranged in longitudinal strise ; I think these 
are only due to immersion of the insect in spirit. 

Lina ceneipennis. 

L. ovata, postice paullo ampliata, convexa, nitido-testaceo-fulva, 
antennis extrorsum nigris ; thorace longitudine duplo latiore, con- 
vexo, obsolete foveolato, tenuiter punctato, lateribus a basi ad apicem 
angustato-rotundatis ; elytris viridi-seneis, snbcrebre punctatis, 
punctis prope suturam obsolete subseriatim dispositis. — Long. 
4^ lin. 

Hab. Northern China. 

Genus Gastrolina. 

Caput thoraci ad oculos insertum ,• oculis ovato-rotundatis ; anten- 
nis corporis dimidio brevioribus, subfiliformibus, ad apicem leniter 
incrassatis, articulo primo obovato, incrassato, secundo brevi, 
cmteris oblongo-obovatis, tertio elongato, ultimo ovato ; palpis 
maxillaribus subfiliformibus, articulo ultimo ovato. Thorax trans- 
versus. Scutellum subtriangulare. Elytra thorace latiora, oblongo- 
ovata, dorso complanata. Pedes simplices, unguibus apice subtus 
bidentatis. Abdomen fceminse gravidse valde distendum, ultra 
marginem elytrorum extensum. Corpus oblongum, depressum. 
Type, Gastrolina depressa , Baly. 

Separated from Lina by its depressed form, and by the dis- 
tended abdomen of the pregnant female. 

Gastrolina depressa . 

G . oblonga, depressa, nitido-nigra, seneo-micans ; abdominis late- 
ribus thoraceque flavo-fulvis, hoc longitudine plus duplo latiore, 
disco irregulariter impresso, tenuiter punctato, utrinque intra mar- 
ginem longitudinaliter foveolato et crebre punctato, margine ipso 
subincrassato, postice subrecto, antice leniter ampliato rotundato ; 
elytris dorso complanatis, crebre confuse, prope suturam subse- 
riatim, punctatis, utrisque sutura vittisque tribus subelevatis, ob- 
scure cyaneis, margine incrassato nigro-mneo. — Long. 3^ lin. 

Hab. Northern China. 


[To be continued.] 


