16 BtTLLETIN 95, UNITED STATES NATIONAL MUSEUM. 



Genus PSAMMOBATIS Gunther. 



13. PSAMMOBATIS BREVICAUDATUS Cope. 



Psammoiatis hrevicatidatus Cope, Proc. Amer. Philos. Soc, 1877, p. 48; 

 Pascasmayo Bay, Peru. — Abbott, Mariue Fishes Peru, Proc. Acad. Nat. 

 Sci. Phila., 1899, p. 328. 



Genus DISCOPYGE Tschudi. 



14. DISCOPYGE TSCHUDII Heckel. 



Discopyge tschudii Heckel iu Tschudi, Fauna Peruana, Pise, 1845, p. 33, 

 pi. 6; Heradura between Huacho and Chaucay. — Dum^ril, Ichth.. 

 vol. 1, 1865, p. 521,— Gunther, Cat. Fish. Brit. Mus., vol. 8, 1870, p. 

 454.— Steindachner, Fauna Chilensis, 1898, p. 832, pi. 21, figs. 14o, 

 145. — Abbott, Marine Fishes of Peru, Proc. Acad. Nat. Sci. Phila., 1899, 

 p. 329. 



Genus PTEROPLATEA Muller and Henle. 



15. PTEROPLATEA CREBRIPUNCTATA Peters. 

 TTJYO. 



Pteroplatea erehripunctata Peters, Monatsber. Berlin Akad. Wiss., 1869, p. 

 703 ; Mazatlan. — Jordan and Evermann, Irishes North and Mid. Amer., 

 vol. 1, 1896, p. 87. — Gilbert and Starks, Fishes of Panama Bay, Mem. 

 Cal. Acad. Sci., vol. 4, 1904, p. 18. 



One specimen, a male, field No. 09507, 35 cm. in length, from Lobos 

 de Afuera. 



Disk nearl}^ twice as broad as long; distance from tip of snout 

 to hinder margin of pectorals 1.T4 in breadth of disk; snout sharp, 

 rostral angle about 115 degrees; distance from tip of snout to eye 

 8.60 in breadth of disk; eye small, 4.83 in snout; distance between 

 eyes 1.38 in snout; tip of snout to center of mouth 9.26 in breadth 

 of disk; tip of snout to anterior gill opening 5.53. 



Color in life, disk mingled olive green and olive brown, finely 

 marked with darker and lighter and conspicuously speckled with 

 small white spots, these spots smaller than eye, each surrounded by a 

 ring of darker. The spots in this specimen are separted by a distance 

 of one-half inch to 2 inches, generally about 1 inch. Posterior border 

 of disk above of a dark reddish color (specimen out of water some 

 time). Below, the posterior border is of the same color; outer half 

 or more of each wing, rusty orange. 



Compared with specimens in the United States National Museum, 

 the disk is dark olive in alcohol instead of a reddish brown. 



