No.i4,sj. ARGENTINA FISHES— EVERMANN AND KENDALL. 69 



Famil}^ SQUATINID^]. 



2. SQUATINA SQUATINA 'Linnaeus), 



ANGEL. 



Squalus squatina Linn^us, Syst. Nat., 10th ed., 18;58, p. 233, Europe. 



Rhina squat! no, Perugia, Ann. Mus. Civ. Stor. Nat. (jeiiova, 2d ser., X (XXX), 



1890-91, p. 608 (Mar del Plata). 

 Squatina squatina, Berg, Anal. Mas. Nac. Buenos Aires, IV (2d ser., I), 1895, p. 9 



(Bahia Blanca; Mar del Plata; Montevideo). 



Berg .^aj's this .species occurs in considerable abundance at Bahia 

 Blanca, Mar del Plata, Montevideo, and along the whole south coast. 



Our collection contains one specimen 20 inches long from the market 

 at Buenos Aires, probably from Urug'uayan fisheries. 



Family NARCOBATID^. 



3. DISCOPYGE TSCHUDII Heckel. 

 RAYA ELECTRICA. 



Discopyge. tscnudil Heckel in Tsehudi, Untersuch. Fauna Peruviana, 1845, p. 33, 

 pi. VI, Peru. — BER(i, Anal. Mus. Nac. Buenos Aires, IV (2d ser., I), 1895, 

 p. 10 (Mar del Plata). 



Two specimens 16 and 12.5 inches in total length, respectively^ from 

 the market of Buenos Aires, agree very well with Berg's description. 



Family RAJIDJE. 



4. RAJA PLATANA Giinther. 



Raja platana Gunther, Challenger Rept., ZooL, I, 1880, p. 11, pi. iii, Rio de la 

 Plata, in 13 fathoms. — Berg, Anal. Mus. Nac. Buenos Aires, IV (2d ser., 

 I), 1895, p. 13 (Mar del Plata; Montevideo; Rio de la Plata). 



Berg states that this species is comparatively more abundant than 

 the others and reaches a larger size. He has seen individuals a meter 

 in diameter. He sa3^s that they have the antero-lateral border some- 

 what sinuous rather than straight, as figured by Giinther. 



We identif}" the single specimen in our collection with this species. 

 although it differs somewhat from Giinther's description and figure. 



Total length 23.5 inches; length of disk about 2 in total length; 

 eye 8.63 in snout, 2.36 in interorbital; teeth short, bluntly conic in 

 front, nearly flat at ends of jaws, 40 rows in the upper jaw, 44 in the 

 lower. Body smooth above, excepting a patch of scattering prickles 

 about halfway between eye and lateral border; a group of small 

 spines on snout; scattering prickles in front of and between eyes; a 

 short spine before each eye and 2 behind, near inner end of each 

 spiracle; 3 short spines and a few prickles on back near junction with 

 head; scattering prickles along back and front of and between ventral 



