FISHES OF WEST COAST OF PERU. 35 



41. PYGIDIUM TAENIA (Kner). 



Trichomijcterus taenia Kner, " Sitzgsber. Akad. Wiss. Munchen, 1863, p. 

 228." — Kner and Steindachker, Abb. Bayer. Akad. Wiss., 1864, p. 52, 

 pi. 6, fig. 1 ; Western Slope Peruvian Andes. — Gunthee, Cat. Fish. Brit. 

 Iilus.. vol. 5, 1864, p. 274. 



Pygidium taenia Eigenmanx and Eigenmann, Nematognathi, 1890, p. 333. 



42. PYGIDIUM LATICEPS (Kner). 



Trichomycterus laticeps Kner, Sitzgsber. Akad. Wiss. Mlinchen, 1863, p. 228. — 

 Kner and Steindachnek, Abb. Bayer. Akad. Wiss., 1864, p. 54, pi. 6, 

 fig. 2 and fig. la; Western Slope of Peruvian Andes. — Gunther, Cat. 

 Fish. Brit. Mus., vol. 5, 1864, p. 274. 



Pygidium laticeps Eigenmann and Eigenmann, Nematognathi, 1890, p. 334. 



43. PYGIDIUM OROYAE Eigenmann and Eigenmann. 

 BAGKE-CITO. 



Plate 4, fig. 2. 



Pygidium oroyae Eigenmann and Eigenmann, Proc. Cal. Acad. Sci., ser. 2, 

 vol. 2, 1889, p. 51 ; Oroya ; Nematognathi, 1890, p. 334. 



Two specimens, field No. 564, 12.7 and 13 cm. in length, from 

 river at Oroya. 



Body compressed; caudal peduncle strongly compressed, its least 

 depth 1.31 in head; head broad, depressed, its length equal to its 

 breadth, 5.2 in length ; depth of body 5.73 ; eyes very small, 10.5 in 

 head, 3.5 in interocular space; snout 2.1 in head; interocular 3; bar- 

 bels short and rather stout, none of them reaching gill-opening. 

 D. 11; A. 9; insertion of dorsal over vent; insertion of anal under 

 middle of dorsal; caudal broad and rounded; ventrals small, close 

 to A'ent, 2.21 in head ; pectoral broad, fan-shaped, 1.23 ; opercular and 

 subopercular spines well developed. 



Color in alcohol: Yellowish, with irregular groups of dark brown 

 spots. 



44. PYGIDIUM DISPAR Tschudi. 



Pygidium dispar Tschudi, Fauna Peruana, Ichthyol., 1845, p. 22, pi. 8 ; 

 eastern slope of the Peruvian Andes, at an altitude of 14,000 feet. — 

 Eigenmann and Eigenmann, Nematognathi, 1890, p. 335. — Stakks, 

 Fishes from Ecuador and Peru, Proc. U. S. Nat. Mus., vol. 30, p. 770, 

 1906. 



45. PYGIDIUM PUNCTULATUM (Cnvier and Valenciennes). 

 BAGRE. 



Trichomycterus pvnctulatus Cuvier and Valenciennes. Hist. Nat. Poiss.,* 



vol. 18, 1846, p. 362 (488) ; pi. 552; river at Lima. 

 Pygidium dispar punctulatum Eigenmann and Eigenmann, Nematognathi, 



1890, p. 336. 



