FISHES OF HAWAIIAN ISLANDS. 



581 



nostrils 5; distance from tip of snout to first dorsal spine 86; lengtli of lirst dorsal siiine 5; base of (irst 

 dorsal 6; distance between dorsals 17; lengtli ni second dorsal spine S; l>ase of sei'ond dorsal 7; lengtli 

 (jf upper caudal lobe L'5. 



Width of snout slightly more than half length of head measured to first gill-cleft; anterior nostrils 

 opening in the anterolateral margins of snout, large, round, ilirected forward; anterior nasal valve 

 broad and triangular, completely overlapping posterior valve, which is horizontally expanded and 

 s.miewliat intricately folded; distance between inner angles of posterior nasal slits half the length 

 of preoral i)ortion of snout; eyes very large, ecpialing the axial length of snout in advance of orbits; 

 distance between angles of mouth very slightly less than half length of head; a sliort fold extending 

 backward from angle of mouth for a distance less than its continuation forward alongside of cither 

 jaw; the upper and lower labial folds are equal in length, and but little more than half diameter of 

 pupil; teeth small, equal and similar in both jaws, each consisting of a central cusj) and a smaller pair 

 of lateral cusps; several series of teeth function at the same time in each jaw; lower surface of snout 

 studded with large pores, some of these forming a narrow V-shaped patch between the nostrils; pores 

 on upper surface of snout arranged in 'J linear patches which extend along upper margins of orbits 

 and are continuous anteriorly with the arms of the inferior V-shaped patch; the spiiacles are trans- 

 verse slits, well behind orbits, and slightly behind angles of mouth, their length one-third diameter of 

 orbit, the distance between them equal to length of snout. 



First dorsal spine inserted well behind pectoral axil, sliglitly nearer extremity of snout than 

 base of upper caudal lobe, and midway between second dorsal spine and spiracle; second dorsal spine 

 midway between first dorsal fin and base of upper caudal lobe; distance between ventralsand pecti>rals 

 equal to length of head (exclusive of gill-region). The type is a young male, in which the claspers do 

 not nearly extend to margin of ventral tins. 



Fifi. 2'AQ. — CrulronqjUiiiM ruttrosuvi Gilbert, new .speeies. Type. 



Head and body smooth in the young (type si)ecimen), with a very few minute scattered i)rickles, 

 somewhat more numerous along sides of tail, and wholly wanting on anterior pari of body, on fins, 

 and on head. Cotype hispid. 



Lower parts black, shading into a light brown near median dorsal line; pnircd fins an<l dorsals 

 blackish, with wide wliite margins; caudal lolies uiiifonii lilackish. the lower intervening portion of 

 fin lighter, but not white. 



An adult male, 40 cm. long, from station ;WHil, vicinity of Kauai, 3X5 to 500 fathoms, is considered 

 a cotype of this si)ecie8, but the snout and head generally are so badly distorted as to make coin|>ari- 

 sons ditHcidt. The entire head and body are covered with rather distinct fine prickles, borne upon 

 small stellate bases. ^lany of the teeth have 4 (.r o cusps, a small outer cusj) being frequently 

 developed at the base of one or both lateral cus]is. The claspers are fully developeil and reach more 

 than half way from their inner base to the origin of the lower caudal lobe, each bearing near its tip a 

 pair of lateral slender hol^ked spines, between which is a median soft prolongation tapering rapidly 

 to a point and bearing llic distal prolongation of the groove. White margin of fins narrower than in 

 the type. 



This species is closely allied to C. nhjer (iarnian, from the vicinity of the (ialajiagos Islands, but 

 seems to differ in jiroportions of eye and snout, and in certain details of position of the fins. The 

 prickles seem also more numerous and finer. Nothing can be said concerning its relations with 

 ('. oruatum Alcock, from the Hay of Bengal and the Arabian Sea. 



Only the type and the cotype known. 



