THE SHORE FISHES OF PERU 



175 



lateral line complete, following outline of back; scales rather small, 

 strongly ctenoid; dorsal with 10 spines, some of the spines bearing 

 filaments, and about 13 soft rays; caudal more or less truncate; anal 

 with 3 spines and about 7 soft rays; ventrals inserted a little behind 

 base of pectoral. 



A single species of this genus is known. 



CRATINUS AGASSIZn Steindachner 



Peje-zorro 

 Figure 39 



Cratinus agassizii Steindachner, 1878, p. 19, Galdpagos Islands (original descrip- 

 tion). — Jordan and Evermann, 1896, p. 1188, Charles Island, Galdpagos 

 (description; references). — Evermann and Radcliffe, 1917, p. 72, pi. 7, 

 fig. 1, Paita, Peru (synonymy; description). 



Head 2.65; depth 3.9; D. X, 13; A. Ill, 7; P. 19; scales 8-86. 



Body low, little compressed, its greatest thickness about three- 

 fourths its depth; back little elevated; dorsal profile anteriorly 

 slightly convex; head over eyes scarcely deeper than wide; caudal pe- 

 duncle fairly compressed, 3.3 in head; snout long, 3.3; eye 6.9; in- 

 terorbital 10; mouth large, oblique; lower jaw projecting strongly, 



Figure 39. — Cratinus agassizii Steindachner. From a specimen 330 mm. long, Paita, 

 Peru (U.S.N.M. No. 77645). (After Evermann and Radcliffe, 1917.) 



extending into the dorsal outline; maxillary only moderately broad, 

 extending below anterior margin of pupil, 2.4 in head; teeth in each 

 jaw in a band, some of the outer ones in upper jaw, and especially the 

 lateral ones in lower jaw, enlarged, caninelike, fixed, small pointed 

 teeth on vomer and palatines; preopercular margin finely serrate, the 

 serrae at angle slightly enlarged, the horizontal limb mostly unarmed; 

 gill rakers strongly spinose, mere spiny tubercles anteriorly on each 

 limb, the longest one at angle little more than half length of eye, 13 on 

 lower and 7 on upper limb of first arch; scales rather small, strongly 

 ctenoid, extending forward on snout, reduced in size on head (except 



