14 



BULLETIN" 95, UNITED STATES NATIONAL MUSEUM. 



a*. Distance from tip of suout to line connecting tips of pectorals about 2.3 in 



breadth of disk ; enlarged spines along median dorsal line of tail 10 to 12 ; 



rest of tail smooth; rostral angle 54 degrees sieindocTinen", p. 14. 



11. RAJA AGUJA Kendall and Radcliffe. 



Raja aguja Kendall and Radcliffe, Mem. Mus, Comp. Zool., vol. 35, No. 3, 

 p. 78, pi. 1, fig. 1-2, April, 1912; Alhatross station 4G53, near Point 

 Aguja, Peru. 



12. RAJA STEINDACHNERI Delfin. 



PLATILLO; RAYA. 



Raja chilensis Steindachner, Fauna Chilensis. 1898, p. 332, pi. 31, fig. 15; 

 Iquique (not iJ. cJiilensis Gay, Hist. Chile, Zool., vol. 2, 1848, p. 367).— 

 Abbott, Marine Fishes of Peru, Proc. Acad. Nat. Sci. Phila., 1899, p. 328. 



Raja steindacTmeri Delfin, Cat. Peces de Chile, 1901, p. 23. 



Raja hnrgeri Delfin, Rayas Nuevas Chilenas, Rev. Chil. Hist. Nat., Ano VI, 

 1902, p. 267, pi. 12 ; Coquimbo. 



The collection contains two specimens of this species, a female 

 (field No. 09704) from Mollendo, and a male (field No. 09721) from 

 Chimbote, where it was called " Eaya." 



Following are the measurements of these two specimens : 



Female. 



Male. 



Total length 



Length of disk 



Width of disk 



Tip of snout to front of eye 



Distance between eyes 



Interorbital 



Longitudinal diameter of eye 



Length of spiracle aperture 



Heiglit of first dorsal 



Base of first dorsal 



Distance between first and second dorsal. 



Height of second dorsal 



Base of second dorsal 



Tip of snout to nostrils 



Tip of snout to center of mouth 



Tip of snout to anus 



Tip of snout to fifth branchial aperture. . 



Breadth of mouth 



Length of tail 



Breadth of tail at its base 



Length of clasper in male 



In the female there is a broad band of minute prickles barely pro- 

 truding through the skin on the anterior dorsal border of the disk, 

 beginning slightly in advance of eyes and extending backward to 

 within two-sevenths distance from tip of snout to broadest part 



