THE SHORE FISHES OF PERU 467 



head rather large; caudal peduncle short, moderately deep, 2.8, 2.9 in 

 head; snout in front of lower eye 5.1, 5.4; eyes about equally advanced, 

 fully lateral, 6.4, 6.5; interorbital slightly concave, 3.0, 3.0 in eye; 

 mouth large, oblique, terminal; jaw curved; maxillary ending far 

 below posterior margin of eye 1.9, 1.9 in head; teeth m a single series 

 in each jaw, rather widely spaced, upper jaw anteriorly with a pair 

 of canines, the lateral teeth rather small, those of lower jaw notably 

 larger than lateral ones of upper jaw; gill rakers oddly shaped, with 

 broad base each bearing tlu"ee to five points, 9, 9 on lower and 4, 5 

 on upper limb of first arch; margin of opercle, especially that of 

 blind side, finely fringed; two small dermal flaps just behind margin 

 of opercle and below base of pectoral on ocular side; lateral line with 

 slight upward curve over pectoral, the pores with long branches, tu- 

 bercles present on postocular part of head, but not distinctly connected 

 with lateral line; scales small, cycloid on both sides, extending on 

 rays in anterior parts of dorsal and anal, and on rays on caudal, and 

 forward on interorbital; first ray of dorsal over posterior nostril, well 

 in advance of upper eye; caudal somewhat angulate, the middle rays 

 longest, slightly longer than postocular part of head; first ray of anal 

 well in advance of base of pectoral; ventral of ocular side median, 

 about same length as that of blind side, 2.7, 2.7 in head; pectorals 

 rounded, the one of ocular side the larger, with two or three more 

 rays than that of blind side, 1.9, 2.0 in head, that of blind side 2.4, 

 2.7 in head. 



Color nearly uniform brown; dermal flaps on shoulder girdle nearly 

 black; pectoral with fight spots, forming more or less distinct, wavy, 

 cross lines. 



This species is described herein from two specimens, 182 and 178 

 mm. (148 and 145 mm. to base of caudal) long, taken by the Mission 

 in an otter trawl on sandy bottom in about 3 fathoms, in Sechura Bay. 

 These have been compared with three from Panama Bay, the type 

 locality, one of them a paratype, and were found to agree in virtually 

 all respects. 



Range. — Panama Bay to northern Peru. 



Genus CITHARICHTHYS Bleeker, 1862 

 Body ovate or oblong; interorbital generally rather narrow, con- 

 sisting of a bony ridge or concave space, sometimes broader in male 

 than in female; mouth rather large, the maxillary reaching weU beyond 

 anterior margin of eye; teeth in jaws rather small, pointed, in a single 

 complete series on both sides of jaws, none on vomer; gill rakers 

 short or of moderate length, rather slender; lateral line without an 

 arch; scales cycloid or finely ctenoid; origin of dorsal fin in advance of 

 upper eye; ventral fin of ocular side median; pectoral of ocular side 

 the larger, none of its rays especially produced. 

 A single species comes within the range of this catalog. 



