Fishes of the JVestern North Atlantic 



S7 



Figure 13. Rhinobatos horkelii, male, 700 mm long, from Rio de Janeiro, Brazil (Harv. Mus. Comp. Zool., No. 

 544). A Anterior part of head in dorsal view. B Ventral view of same. C Anterior part of head, dorsal view, of 

 R.percellens, 557 mm long, from Rio de Janeiro, Brazil (Harv. Mus. Comp. Zool., No. 435). D Anterior part 

 of head of R. rhinobatos, from Italy (.'^cad. Nat. Sci. Philad.). All about 0.6 X. 



great as distance between spiracles; its lateral dermal folds originating about opposite 

 or a little in advance of tips of pelvics and extending as far as lower origin of caudal, 

 their width opposite interspace between dorsals (where widest) about Vs ^s great as 

 horizontal length of eye. 



