RAJIDAE 35 



Arauco (Cavendish Bentinck). I have not seen a mature male of this species, but it 

 seems possible that Philippi's description of Raja acanthostyla is based upon such 

 a specimen. 



Psammobatis brevicaudatus, Cope. 



1877, Proc. Amer. Phil. Soc, xvn, p. 48; Fowler, 1910, Proc. Acad. N.S. Philad., lxii, p. 471, 

 fig. 2; Garman, 1913, Mem. Mus. Comp. Zool., xxxvi, p. 371. 



Disc much broader than long, its width about f of the total length ; anterior margins 

 notched; outer angles obtusely pointed. " Snout produced like a small papilla between 

 the ends of the pectorals ", its length about 7 in width of disc ; interorbital width greater 

 than length of eye + spiracle, which is about twice in length of snout. "Top of head 

 and a band along the anterior part of the disc, above and below, rough with minute 

 spines ; disc elsewhere smooth, excepting two spines in front of each orbit, a spine near 

 the inner border of each spiracle, a row of a few spines near the edge of the disc opposite 

 the eyes, a median row of 6 or 8 on the middle of the back, a double row parallel to 

 the edge of the pectoral and a median series on the tail." Upper surface "plumbeous 

 with darker shades". 



Hab. Bay of Pacasmayo, Peru. 



Known only from the type, a mature male, 307 mm. long (width of disc 270 mm.), 

 preserved in the Academy of Natural Sciences, Philadelphia. 



CHIMAERIDAE 



Callorhynchus callorhynchus (Linnaeus). 1 



Chimaera callorhynchus, Linnaeus, 1758, Syst. Nat., ed. 10, p. 236. 



Callorhynchus antarcticus, Schinz, 1822, in Cuvier, Thierreich, II, p. 239; Giinther, 1870, 



Cat. Fish., vm, p. 351. 

 Callorhynchus callorhynchus, Garman, 1904, Bull. Mus. Comp. Zool., xli, p. 271, pi. vii, figs. 7-9, 



pi. x; Garman, 191 1, Mem. Mus. Comp. Zool., XL, p. 98. 

 Callorhynchus smythii, (Lay and Bennett) Garman, 1904, t.c, p. 271, pi. vi, figs. 1-4; Garman, 

 1911, t.c, p. 98. 

 St. WS 96. 17. iv. 27. 48°oo'45"S, 64° 58' W. Commercial otter trawl, 96 m.: 1 female 

 specimen, 495 mm. 



St. WS 762. 16. x. 31. 43 50' S, 65° 01' 51" W. Commercial otter trawl, 67-65 m.: 2 male 

 specimens, 320, 620 mm., 4 females, 330-500 mm. 



St. WS763. 16. x. 31. 44 14'S, 63°28'W. Commercial otter trawl, 87-82 m. : 9 male specimens, 

 265-315 mm., 2 females, 280, 290 mm. 



St. WS 847. 9. ii. 32. 50 15' 45" S, 60 ° 57' W. Commercial otter trawl, 51-56 m.: 1 female 

 specimen, 800 mm. 



Hab. Both coasts of South America, from southern Brazil to Peru. 



Garman recognized two species from South America, distinguished by differences in 

 the dentition and in the size of the pectoral fins. In C. callorhynchus the tritors of the 

 palatine laminae are said to have the form of elongate parallel bars in the young (as in 

 the young of all species), but in the adult these fuse to form a single tritor with 2 rather 



1 For full synonymy of this species see Garman (191 1). 



5-2 



