134 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



snout 4.5, caudal peduncle length 18, caudal peduncle depth 8, tip of 

 snout to anal origin 42, anal origin to caudal base 38, predorsal length 42, 

 origin of first dorsal to caudal base 38, center of caudal base to origin of 

 second dorsal 24, postorbital 7, pectoral fin 15.5. 



Description. — Body elongate, compressed, deep anteriorly, tapering 

 to a narrow caudal peduncle, depth 4.2-4.5 in standard length. Dorsal 

 profile curving slightly upward in a flat curve from tip of snout to about 

 mid-point of total length, thence curving more abruptly downward 

 through second dorsal base and becoming almost horizontal on caudal 

 peduncle. Ventral outline deeply and evenly curved from tip of snout 

 to posterior end of anal, thence flattened to end of caudal peduncle. Ab- 

 domen compressed, preventral edge thinly rounded, not keeled. Caudal 

 peduncle length (from last anal ray to end of hypural fan) 4.6-5.4 in 

 standard length, caudal peduncle depth 1.76-2.18 in its length. 



Sides of head and body scaled ; 55-59 scales in a lateral series from 

 above gill-opening to caudal base. Predorsal scales along mid-line of 

 back 23-27. Scales around caudal peduncle 16, preventral scales about 15. 

 Base of caudal fin scaled. Anal sheath composed of a distal row of modi- 

 fied, more or less oblique quadrilateral scales with the apexes forming a 

 rounded angle at the postero-inferior corner of each scale, and a proximal 

 row of very oblique scales which are only partly on the rays. Sheath some- 

 times absent on the posterior third of the fin. Lateral band including one 

 complete row of scales under first dorsal and two thirds of a row above 

 and half a row below. Lateral line of several incomplete series of pores 

 on sides. 



Head short, truncate posteriorly, 4.66-4.88 in standard length; head 

 width 1.83-1.95 in its length. Snout short, bluntly rounded from dorsal 

 and lateral aspects, 3.53-3.84 in head. Eye large, 2.79-3 in head. Upper 

 edge of orbit touching, but not entering, dorsal outline of head, its di- 

 ameter equal to or slightly less than shortest distance between orbit and 

 angle of preopercle. Adipose eyelid little evident. Postorbital narrow, 2.6- 

 3 in head. Interorbital broad, slightly convex, 2.68-2.84 in head. Pre- 

 opercle with a small, weak, rounded, closely appressed "spine" at its 

 angle. Branchiostegal rays 6. 



Mouth terminal, oblique, gape curved, lower jaw slightly included 

 at tip when mouth is tightly closed. Maxillary narrow, not or barely 

 reaching anterior edge of eye, never reaching edge of adipose eyelid 

 when mouth is tightly closed, 2.7-2.95 in head. Premaxillaiy protractile, 

 broadly dilated posteriorly. Gape restricted at corners of mouth by mem- 



