[ 127 j 

XXVII. Descriptions of several new British Forms amongst the 
Parasitic Hymcnopterous Insects . By J. O. Westwood, 

F.L.S. S?c* 

Familia Chalcidid;e, Westw. 

1. BracJiymeria , Westw. in Steph. Cat. 393. Chalcis. Spin. 

E Chalcide typicali ( Ch . Sispes) difFert corpore obtiisiori, antennis bre- 
vioribus crassioribue, abdomine subsessili, subconico, vix compresso 
coxisque posticis brevioribus. — Chalcis minuta , Fab. 

2. PachylarthrnsfNe$>\.\v.,Pteromalus , p. JDallm. Sw.Tr.1820. 
Caput latum, palpis maxillaribus articulo ultimo maximo inflato ; antennae 
13-articulatae, articulis 3 et 4 annuliformibus, 11-13 clavam parvam for- 
mantibus j abdomen $ breve subtriangulare. — Pack, insignis, Westw. Aureo- 
viridis, antennis palpisque Fill vis, pedibus fiavis. 

3. Trigonoderus , Westw. in Steph. Cat. Hand. p. 396. 
Cheiropacho Westw. affine. Thorax subovatus, collare triangulare, antennae 
¥ 13-articulatae,articulo 2do minuto, 3tio longitudine lmi dimidio, articulis 
4 — 8 paullo brevioribus aequalibus, ultimis 5 clavam (articulo 8vo paullo 
majorem) formantibus. — Tr. princeps. Westw, Obscure aeneus, thorace 
postice aureo nitenti, abdomine aureo-viridi, cyaneo nitenti ; antennis 
nigris basi ferrugineis ; alis hyalinis nubila elongata centrali fuscescente, 
pedibus ferrugineis, femoribus basi pulvillisque nigris. Exp. alar. 6 lin. 

4. Onnyrns , Westw. 

Antennae breviores crassae ut in Cheiropacho formatae. Thorax convexus; 
abdomen $ cylindrico-convexum apice conicuin, thoracis latitudine et 
illo paullo longius, segmentis 2 — 5 hirsutis punctatis et in singuli disco, 
serie transverso impressionum denticulatarum ornatis. Oviductus breviter 
exsertus. — Orm. punctigcr , Westw. Aureo-viridis, abdomine cupreo parum 
nitente. Antenna; nigrae, apice fuscae; scutellum nitidissimnm ; pedes nigro- 
virides, tibiis anticis geniculisque posticis obscure ferrugineis; tarsi pallidi; 
alee vix fulvcsccntes. 

5. Tlieocolax , Westw. 

Apterus. Caput subhorizontale snbquadratum planum, antice minimi 
tridentatum. Antennae mediocres, 1 l-articulatae ; articulo 2do majori arti- 
culis 3—8 sensim crassioribus, ultimis tribus clavam, articulo priori (8vo) 
majorem formantibus. Collare magnum triangulare. Abdomen oviduetu 
breviter exserto. — Th. formiciformis, Westw. Fulvo-fuscescens, abdomine 
obscuriori. 

6. Macroglcnes , Westw. 

Caput latum, oculis partem ejus majorem occupantibus, antennae breves, 
apicibus crassis, 10-articulatae articulo 2do mediocri, 3 — 5 niinutis, Cto 
magnitudine 2di, 7mo praecedcuti majori ; ultimis tribus clavam magnam 
formantibus, abdomen compressura. — Macr. oculatus , Westw. Atro-ccerulea 
oculis rubris aut piceis tarsisque pallidis. 

7. Cerchysius , Westw. Encyrtus , p. Dallm. Curt. 

Tibia; intermedia; alarumque nervi Encyvti. Antennae ? cylindrical, 
apice paullo crassiores, 10-articulatae, articulis 2 — 7 subaequalibus; ultimis 

* Communicated by the Author. 


128 Mr* Westwood’s Descriptions of several new British 

tribus clavam compressani formantibus apice obtuso ; abdomen oviductu 
valido exserto, abdominis fere longitudine. — Encyrtus urocerus , Dallm. 
Sw. Trans. 1820. p. 308. — Sp. 2. Cerch. stigmaticalis , Westw. Caeruleo- 
viridis abdomine cyaneo, antennarum flagello oviductuque omnino nigris ; 
alis fascia paullo ante medium pallide fuscescente, stigmate obscuriori ra- 
mulo stigmaticali fusco. 

. 8. Cirrospilus, Westw. 

Eulopho affinis, et plus minusve fulvo variegatus. Caput anticb, inter 
oculos, emarginatum ; antennae ? breves crassae 7-articulatae, articulo 2do 
3tii dimidio "longitudine, hoc 4to longiori, ultimis tribus clavam, articulo 
4to vix crassiorem, formantibus. Abdomen (petiolo brevi distincto) de- 
pressum ovatum, postice conicum. — Cirr. elegantissimus , Westvy. Caput, 
thorax, pedesque pallide flavescentes, oculis capitisque vertice nigris; 
lineaque irregulari per medium thoracis currenti, antice posticeque dilatata, 
nigra. Abdomen fulvum, macula centrali irregulari -quadrata alteraque 
postica subtrigona, nigris. Antennae fuscae. 

9. Eaplectrus , Westw. 

Eulopho affinis. Caput parvum; antennae graciles 9-articulatae articulo 2do 
breviori, articulis 3 — 6 ovatis, ultimis 3 clavam (vix articulo 6to majorem) 
formantibus. Thorax ovato-circularis ■ antice subacuminatus. Abdomen 
(petiolo brevi distincto) thorace majus, circulare, spatuliforme, depressum. 
Coxae posticae pcrmagnae tibiaeque posticae calcari longo instructae. — Eupl. 
maculiventris , Westw. Capite thoraceque nigris abdomine fulvo, lateribus 
anticis fasciisque transversis apicalibus fuscis. Antennae, os et pedes, fulvi. 

10. Dicladoccrus , Westw. 

Eulopho typicali ( Eul . ramicornis ) differt antennis tantum biramosis, sc. 
9-articulatis articulo 2do parvo, 3tio 4toque longioribus, horum singulo 
ramuin eiongatnm e basi emittente; 5to Ctoque crassioribus simplicibus, 
ultimis 3 clavam brevem formantibus. — Dicl. Westwoodii , Steph. Cat. 397. 
No. 5501. Caput thoraxque purpurei viridique nitentes, abdomine cy- 
aneo-nigro, basi lateribus aeneis, antennis cyaneo- nigris, pedibus aeneo-nigris 
geniculis articulisque tarsorum basalibus pallidis. 

Familia ProctotrupiDjE. 

11. Platymischas , Westw. 

Apterus, depressus, angustus. Caput subquadratum antice subacumi- 
natum. Antennae 14-articulatae, articulo lmo maximo, subtriarigulari ; 
2do parvo; 3tio illo majori, interne producto; articulis 10 sequentibus 
subaequalibus, filiformibus ; 14mo paullo longiori. Thorax oblongo-quadra- 
tus. Femora incrassata. Tarsi antici articulo lmo dilatato; abdomen fere 
thoracis magnitudine, segmento lmo maximo. — PI. dilatatus. Steph. Cat. 
Mand. p.399. Niger, nitidus, thorace postice villoso, antennarum articulis 
tribus basalibus pedibusque rufescentibus. 

12. Megaspilus , Westw. in Steph. Cat. Mand. 400. Cera - 
phoron , Latr. Curt, et Jurine? 

E Cerapkrone typicali (CW*. sulcatus , Jur.) differt, ali.ssuperis nervo costali 
incrassato, stigmate maximo suborbiculari vel semicirculari, cellula apicali 
unica incomplete, ramo arcuato formata; antennisque fractis et in utroque 
sexu 10-articulatis, apice in ? vix vel minimi incrassato. — Cer. Dux, Curt. 
Brit. Ent.pl. 249. f. 1.3. 4. 5. 8, £.la. ?. 


M. Kupffer’s Notice of some recent Magnet ical Discoveries, 129 

13. Paramesius , Westvv. 

Cirieto genuino afiinis. Caput subquadratum tuberculo antico; antenna; 
<J corpore toto longiores, graciles, filiformes, 13-articulatae, articulis longi- 
tbdine subaequalibus (2do 3tioque minutis exceptis) articulo 4to ad basiii 
minime exciso; abdomen elongato-clavatum, petiolo tertiam partem longi- 
tudine aequante, alarum nervi ut in Cineto gracilipede (Curt. Brit. Ent. 
380. fig. 9.) at areola marginalis paullo longior et basi truncata est. — Par. 
riifipes, Westw. Niger, nitidus, antennis fuscis, pedibus rufis. 

14. Aneurhynclius , Westw. 

Galeso affinis. Caput transversura tuberculo brevi antico, trophis brevibus, 
antennae £ vix corporis longitudine, filiformes', 14-articulatae, articulo lmo 
simplici, 2do minuto, 3tio tenui, et paullo longiori, 4to crassiori, et ad 
basin extern^ rninime exciso. Alae stigmate nullo distincto, sed nervo sub- 
costali basali, cujus apex alarum marginem anticum non attinet sed oblique 
in alarum disco, breviter protenditur, inde ad alarum apicem reflectitur 
areolam marginalem elongatam efforniante, nervi reliqui ut in Cineto graci- 
lipede. — An. galesiformis , Westw. Niger nitidus, antennarum articulo 2do 
pedibusque rufo-piceis, femoribus basi obscnrioribus, alis pallid^ fuscescen- 
tibus. 

15. Spilomicrusy Westvv. 

Subgenns Diapriam cum Galeso connectens. Caput transverso-q'uadratum. 
Antennae £ capite thoraceque paullo longiores, 13-articulatae, ad apicem 
sensim incrassatae; alae stigmate parvo ante medium alarum, quadrato, 
apice intern^ deflexo, ramulum parvum, versus basin alarum reflexum, 
cmittente; areola basali subtriangulari; nervi reliqui ferb ut in Paramesio , 
at indi'stinctissimi. Metathorax utrinque postice spinosus. Femora cla- 
vata, pedunculus abdominis mediocris, striatus. — Spit, stigmaticalis, Westw. 
Niger nitidus, pedibus obscure piceis, alispallide flavescenti-fuscis, stigmate 
nigro. 

T6i fipyris> Westw. 

Bethyllo affine. Caput mediocre subconvexum; antennae elongatae filiformes 
13-articulatae, articulo singulo cylindrico nec ad basin tenuiori. Thorax 
elorigato-ovatus. Metathorax supra longitudinalitcr 3-carinatum. Alae 
areola tinica apicali longiori incompleta areolisque duabus basalibus longi- 
tudlne aequalibus. — Epyr. niger , Westw. Niger, abdomine nitido, tibiis 
tarsisque plus minusve piceis. 


XXVIII. Notice of some recent Mdgnetical Discoveries . By 
M. A. Kupffer, of the Imperial Academy of St. Peters- 
burg; in a Letter to Siu David Brewster, K.H. LL.D. $c. 

DY means of a number of experiments continued during the 
greater part of tlie winter of 1831, I have found that the 
intensity of the magnetic forces, in bars of steel, is diminished 
as much by the action of cold as by that of heat: I speak 
here of that part of the magnetic intensity which is lost when 
we expose a magnetized bar to a temperature higher tlifin any 
which it has experienced since it was magnetized, and which 
is no longer found' after cooling. I have hence adopted a 
more satisfactory method to procure magnetized cylinders of 
Third Series. Vol. 1. No. 2. Aug. 1832. S 


