502 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



3.1 in head; head short, deep, rather deeper than long at base of 

 ventral fins; snout very short, 4.8 in head; eye 7.7; interorbital 3.3; 

 mouth vertical; lower jaw slightly included; maxillary rather broad, 

 1.75 in head; teeth small, in a narrow band on each jaw, vomer and 

 palatmes, and a band of similar hyoid teeth; nasal sac virtually un- 

 developed, the anterior opening with a short tube; gill opening scarcely 

 more than a pore below base of wrist of pectoral; head and body every- 

 where with prickles, extending also on the fins, nearly all bifid, the 

 prongs divergent, occasionally with a membranous tentacle between 

 them; lateral line pores shielded on each side by pairs of modified 

 enlarged prickles, the line beginning behind eye, curved downward 

 under second dorsal toward base of anal, then near lower edge of caudal 

 peduncle; a row of pores behind premaxillaries to base of first dorsal 

 spine, and then extending backward over eye; another row on margin 

 of preopercle and continued across the mandible ; spines of first dorsal 

 well separated from each other and from the second dorsal; the first 

 spine very slender, notably shorter than the second, inserted well 

 behind premaxillary gi-oove, with a fairly large bait composed princi- 

 pally of cutaneous folds, its length 3.4 in head; second and third spines 

 with pricldes, the third the longer and attached to back by membrane, 

 1 .75 in head ; second dorsal with convex margin, the longest rays only 

 a little shorter than head; caudal round, nearly as long as head; anal 

 small, with convex margin, its origin under third last ray of dorsal, its 

 base 1.9 in head; ventrals rather close together, small 2.3 in head; 

 pectoral broad, with wrist nearly as long as the rest of fin, the two 

 parts nearly at right angles to each other, its length without wrist 

 1.5 in head. 



Color gray, with blotches paler than ground color; two small, well 

 separated ocellated spots on middle of side behind head; minute dark 

 spots around orbit; other indefinite dark spots on head and body; 

 fins all about same color; as body, with dark spots arranged to form 

 indefinite cross bars on caudal ; second dorsal with large black ocellated 

 spot between bases of the seventh to tenth ray. 



One fine specimen, 80 mm. (60 mm. to base of caudal) long, was 

 taken by the Mission at San Lorenzo Island. It agrees well with 

 specimens from Panama Bay with which it was compared. 



Range. — Baja California to Peru. Previously apparently not re- 

 ported from south of Panama Bay. 



