Description of a new species of deep-water fish (Icichthys lockingtoni), from the coast of California
PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 305 Anal: INT Sn ice one os aoe doen cane ceveee snnnne cuvcce Ralie w ine 21 ree SO TAY. 25. 8 oe oe mk en eens twee enn one cone cc cene 9 OIE SSE eS) 2 ee ce 25 Candal: Loo i E NOEN oe ee cee de vec tn ewes cn es occces caee cose 13 BPE GUNN MUAYS <2 0 oc ee ee eect nce cece tees ceeens So eee 26 LONG 66 5 a ee 74 Menwa length ..... sada 300.0 o Eee a ni tt a ea 23 LS oo oot i ed ec ae A lke: a OS Ae rrr a III, 20 a Se eS A E 6-50-16 SAN FRANCISCO, CAL., March 2, 1880. DESCRIPTION OF A NEW SPECIES OF DEEP-WATER FISI (ICICH- THYS LOCKIENGTONE), FROM THE COAST OF CALIFORNIA. By DAVID S. JORDAN and CHARLES Hi. GILBERT. Icichthys gen. nov. Allied to Icosteus Lockington, but the body lower and imore elongate, not compressed at the bases of the vertical fins. Head moderate; eyes lateral; mouth terminal, little oblique, with small, sharp teeth in one series, in the jaws only. Gill-openings very wide, continuous. Gill- rakers long. Pseudobranchie present. Branchiostegals 7. Body en- tirely scaly. Lateral line continuous, unarmed. Bases of fins without spinules. Dorsal and anal fins long and low, composed of soft rays only. Pec- toral fins moderate. Ventral fins small, thoracic, 1,5. Pylone cœca about 6, large. Bones all very flexible, cartilaginous. The sealy body fully distinguishes this species from Jcosteus, with whieh singular genus its affinities are intimate, although the known species do not reseinble cach other elosely. (Etymology: é:zm, to yield or submit; ¢7@%¢, fish—in allusion to the flexible skeleton.) Icichthys lockingtoni sp. nov. Body oblong, moderately elongate, somewhat compressed, the candal peduncle rather slender. Head moderate, compressed, with vertical cheeks, rather broad and slightly convex above, the snout abruptly descending, hence bluntish in profile. Profile nearly straight from upper part of snout to the nape. Month moderate, little oblique, the slender maxillary scarcely widened at the tip, extending to rather below the front of the pupil, the anterior edge of the premaxillary on the level of the lower rim of the eye. Lips thin. Upper lip' not protractile. Premaxillary tapering backward, not forming the whole margin of the upper jaw. Maxillary behind slipping entirely under the membranous edge of the preorbital. Preorbital rather Proc. Nat. Mus. 80 20 Sept. Bs, 1880. 306 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. wide, with one or two series of rather large, thin eycloid scales. These scales perhaps covered the cheeks also-m life. At present no other seales are present on the head in the typical example. Lower jaw promi- nent, projecting in front, but included af the sides. Teeth in jaws only, minute, sharp, closely and evenly set, much as in Icosteus enigmaticus, but rather larger and Jess numerous. Eyes large, lateral, longer than snout, their diameter contained abont 4 times in the length of the head. Cheeks rather wide. Preoperele with a prominent crest, behind which are some radiating mucous cavi- ties; the bone with a broad, prolonged, flexible membranaccous edge, covered with radiating striæ, each of which ends in a slightly exserted lexible point. Operele and subopercle rather large, extremely thin, and each crossed by numerous Conspienons radiating strive. Gill-openings wide, not separated by an isthmus, the membranes not connected, Pseudobranchiwe present. Branchiostegals 7. Gill-rakers long, slender, sharp, their length nearly three-fourths the diameter of the eye. They are rather close-set and moderately stiff. Gills 4, a slight slit behind the posterior gill. No bony stay connecting svuborbital and preoperele. Scales very small, apparently cycloid, soft and smooth to the touch, covering the body evenly, bnt becoming smaller below. Lateral line nearly straight, apparently continuous, but not conspicuous on the mid- dle part of the body. It does not run up on the caudal fin. There are on it no traces of the spiules, so conspicuous in [costeus enigmaticus. Seales (too small to be accurately counted) in about 120 transverse series. | Dorsal fin long and low, begining opposite a point nearly midway between the vent and the base of the ventrals; the nnmber of rays 39 to 40. All the rays are soft and articulated, and apparently all except the first are branched. The first rays are very low, the fin gradually rising posteriorly, the highest about one-third the length of the head. The base of the fin 1s somewhat sealy. Anal tin entirely similar, but shorter, beginning slightly in front of the middle of the body (withont caudal), and ending just in front of the last rays of the dorsal; its rays about 25. Caudal broad, fan-shaped, on a slender peduncle; the accessory rays namerous and recurrent. The fin is broken, so that its outline cannot be ascertained. Pectorals as in Jcostcus, with the carpal bones slightly exserted, as if peduneulate, the base a little below the axis of the body, the ontline rounded. The fin is short and small, its length less than that of the heat Ventrais short and small, thoracic, placed a little behind pectorals, with one obsolete spine and five soft rays, one of whicli is slightly fila- mentons. The fin is about one-third the length of the head. Fin rays not beset with spinules. PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 307 Vent normal, immediately in front of the anal, without papilla. Air-bladder apparently wanting. Pyloric cæœca about 6, rather long. Bones all soft and flexible, as in Icosteus enigmaticus. The skin, how- ever, not thick and tough, as in the latter species, but thin and sealed. Coloration in spirits plain brown, lighter below; the skin somewhat punctulate. Measurements of typical example. (00 LOG 0 G56 a 7.5 Inches a NS) OEE Ey re 6.8 inches = 100 ae CONS aS ee ne wee 25 Co Tet copin cosc o Le E ceer ene cee vese ceedee vlbeces 9 Pe e e so coo eat et tens wee ioe eet eencel vec eceelcdesccceeeces 20 RR E ye oo oie <n os oes eos So wies Seve otek ee eee eu ben ec cddcceens 54 NN TNR ete 2 en oo en wine wee we ce sbldeen coccus cade donccede 54 oS In a 10 A Shee ce 37 Le SELL a aS o dore | 51 ogl WEI eenaa a ca 7 aam ro oari TMS a «32.2 coc sce e cece cece cee cee cee eece cece conces 50 te WM cee occ lees e ee 32 Donii ET paeroa Se ca a ee a 11 doro a G vame ola e e E Number of fiu rays: eraa M aa Segoe a Be E EE see od OVAL onene ccs eben 65: oc¢ E 28 Haloa Th aN en ino e n re (ca) 120 The single example of this species at present known was obtained in the market of San Francisco by Mr. W. G. W. Harford, with two of the original types of Icosteus anigmaticus. It has been presented by the California Academy of Sciences, for whom it was originally obtained, to the United States National Museum. Its specific distinctness from [cos- teus wnigmaticus was first noticed by Mr. Lockington, and we have seen fit to name the species for him, in recognition of his important work in Californian ichthvology. ‘The two species are called “deep-water fish” by the dealers. As before noticed, the relations of this genus are evidently with the associated genus Jcosteus, but the two genera bear little resemblance to any form known to us. They will probably constitute a distinct family or subfamily, in the Trachinoid group. This family (Leosteid@) may be defined as follows: Body oblong, compressed. Head moderate, unarmed; the suborbital without bony stay. Mouth terminal, little oblique; the premaxillary not protractile; the maxillary slender. Teeth minute, sharp, erect, in one series on the jaws only. No barbels. Gills 4, a slit behind the fonrth. Gill-openings wide; the membranes free trom the isthmus. Gill-rakers slender. Branclrostegals 7. Dorsal and anal fins long, without spines. Caudal fin, with many recurrent accessory rays, on a slender peduncle. Pectoral fins rounded, with the carpal bones slightly exserted. Ventral fins thoracic, I, 5, or I, 4. Vent normal, without anal papilla. Pseudobranchiw present. 308 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. Skeleton imperfectly ossified, the bones flexible, so that the whole body is limp and destitute of firmness. The twe genera may be thus compared: * Head and body naked, covered with rather thick torgh skin; lateral line and fin rays beset with spinules. Dorsal and anal rather ligh, the body at their bases closely compressed. Dorsal rays, 50 to 55; anal rays, 35 to 40; ventrals rather Dortea e aca oo on cheval a RIE ONS aso a> oie ss oe Re ee a ICOSTEUS. ** Head partly and the body wholly covered with smal] seales. Lateral line and fins rays smooth. Dorsal and anal fins low, their bases little compressed. Dorsal rays, 35 to 40; anal rays, 25 to 30; ventrals short, I, 5........ ‘dates Se ICICHTHYS. SAN FRANCISCO, CAL., March 12, 1880. CATALOGUE OF TROCHELIDCE IN THE COLLECTION OF THE UNITED STATES NATIONAL MUSEUM. By ROBERT RIDGWAY. The following catalogue enumerates all the species of Humming Birds which are contained in the collection of the National Museum, with the localities represented, the latter being in many cases additional to those given in standard text-books relating to this family of birds. The chief aim of the list is to show what species are wanted to complete the col- lection, and exchanges to this end are respectfully solicited. Many of the species of the list are represented by an incomplete series of speci- mens, often by a single skin only, and of these additional specimens are desirable, especially if from a locality not mentioned in the list. Such species are Indicated by an asterisk prefixed to the name. The names! and numbers correspond with those of Elhot’s “ List of Described Species of Humming Birds,” published by the Smithsonian Institution.’ *1. Eutozxeres aquila (Boure.) Reich. Veragua. 4, Rhamphocon nevius (Dumont) Reich. Brazil. 6. Glaucis hirsuta (Gmel.) Boie. Costa diica; Trinidad; Grenada, W.E; B. Peru (Pebas); Panania: por “10. Glaucis cervinicauda (Gould) Salv. & Elliot. E. Eenador (Rio Napo); Brazil? ll. Glaucis ruckeri (Boure. ) Gould. Panama; Costa Itica? ‘A few names are here changed in consequence of recent emendations. *List of Deseribed Species of Humming Birds. By Daniel Giraud Elliot. Reprinted from a Synopsis of the Trochilide in the Smithsonian Contributions to Knowledge, Washington: Smithsonian Institution, 1279. (Smithsonian Miscellaneons Collections, No. 354.) > Including the «ype of G. enea Lawr. 