50 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



posterior nostril close before center of eye with thin cutaneous flap on 

 anterior border of the moderately raised rim ; anterior nostril situated in 

 a round spongy tissue area, slightly smaller than eye in the mid-length of 

 the snout; teeth very small, sharp, in close-set single series in the jaws 

 and on the vomer and palatines; tongue fully adnate to the floor of the 

 mouth ; mouth moderate, somewhat oblique, cleft to below posterior edge 

 of the pupil; maxillary reaching to slightly past the rim of the orbit; 

 jaws about equal; upper jaw nonprotractile ; snout with a low median 

 ridge of fleshy tissue about as wide as pupil beginning between eyes and 

 continuing to upper lip, but at the interorbital region it expands laterally 

 and blends with the tissue of the postorbital regions of the head; no 

 filaments or barbels; lips moderately developed, without superior margin; 

 head deeper than wide, without noticeable tumidity; profile of snout 

 rather blunt, a pronounced angle formed at the extremity of the frontals. 



The following figures represent proportional measurements ; those in 

 parentheses are lengths in millimeters: Total length (74.8). The head 

 is contained 11 (6.8) times in the total length; depth 22.6 (3.3); tip 

 of snout to origin of dorsal fin 4.5 (16.5) ; tip of snout to origin of anal 

 fin 8.8 (8.5) ; tip of snout to center of anus 11.5 (6.5). The snout is 

 contained 4.5 (1.5) in the length of the head, measured from tip of 

 snout to upper end of gill opening; eye 4.5 (1.5) ; interorbital width 5.7 

 (1.2) ; greatest width of head 2.8 (2.4) ; length of maxillaries 2.2 (3.1). 



The vertical fins fail to reach the extremity of the tail by a space 

 equal to diameter of the pupil. There are about 118 pores in the course 

 of the lateral line. 



Color in alcohol light yellowish gray; tip of snout, lower lip, and 

 spongy area on side of snout dusted with minute brown pigment cells; 

 iris dull slate; pores of the lateral line slightly darker than the sur- 

 rounding light color of the body, so that the pores are obvious; pos- 

 teriorly along midlateral axis of body occur numerous brownish pigment 

 cells similar in size and color to those of the snout; beginning 13 mm. 

 from tip of tail these pigment spots occur all over the side of the body; 

 the dorsal and anal fins are heavily pigmented posteriorly, and are almost 

 jet black the last 13 mm. of their length. Tip of the tail beyond termi- 

 nation of the vertical fins is not pigmented. 



I take great pleasure in naming this species for Captain Allan Han- 

 cock, leader of the expedition that obtained the specimen. 



