JJ. nnixoB.vTus. 443 



3. Rhinobatus granulatus. 



Rhinobatus rhinobatus, Bl. ScJm. p. 353. 



yraiuilalus, Cuv. lihjnc Anim.; Mull. Hf Ilcnlc, p. 117, pi. 38; 



Bhjth, Juiirn. As. Hoc. Benyal, 18(30', xxix. p. 3G ; JJumeril, 



Elasinohr. p. 493. 

 aruiatus, Gray, Incl. Zool. c. fig. ; Mull. ^ Ilenle, p. 119 ; Bleck. 



Verh. Bat. Gen. xxiv. Plac/. p. GO, or Nat. Tyds. Ned. Ind. iii. 



p. 85 ; Dumeril, I. c. p. 494. 

 typus, Bciuwtt, in Life of Raffles, p. G94. 



Scarcely distinct from Rh. Judavi. 



Anterior nasal valve not dilated laterally. Snout produced, the 

 distance between the outer angles of the nostrils being contained 

 about once and two-thirds iu that between the mouth and the end 

 of the snout. Mouth straight. Back covered with very distinct 

 rough tubercles, and with a series of large compressed spines along 

 the median line. Some distinct spinous tubercles on the orbital 

 nuirgin and on the shoulder. The two rostral ridges are narrow, 

 and united nearly from the base. 



East Indies ; Austraha. 

 a. Female, 7 feet long : stuffed. India. Presented by J. Miller, 



Esq. 

 b-e. Adult and half- grown : stuffed. India. Purchased of Mr. 



Argent. 

 /. Half-grown. India. Presented by General Hardwicke. 

 (J. Young : stuffed. Sumatra. Prom Sir St. Ilaffles's Collection. — 



Type of lUi. typus. 

 h. Half-grown. Capo York (N. Australia). Purchased of Hr. 



Darnel. 

 i-1. Adult and half-grown : stuffed. 



m. Jaws of a very large example (15 inches broad). India. Pre- 

 sented by T. E. J. Boileau, Esq. 



This species has been distinguished from lih. halavl by the rela- 

 tive length of the nostrils and the intcrnasal space. I do not think 

 that any value is to be attached to sHght differences of this kind, 

 and therefore I have attempted to fix these species by the arrange- 

 ment of the rostral ridges and by the difference of the dorsal tuber- 

 cles. However, if these species, Rh. ohtusus included, had not been 

 distinguished by my predecessors, I should have preferred to regard 



Ithem as one only. 

 Rliinobatus pliilippi, Midi. & Henle, p. 119, pi. 39, docs not ap- 

 pear to be si)ecitically distinct from Rli. (jranulatus. 



4. Ehinobatus obtusus. 



dliill. i]- Ilcnle, p. 122, pi. 37. fiir. 2 ; B/i/ift, Juuni. As. Soc. Bony. 

 18G0, xxix. p. 37; Dumeril, FAasmubr. p. 493. 



Scarcely distinct from Rli. halavi. 



Anterior nasal valve not dilated laterally. Snout somewhat ob- 

 tuse, tho distance between the outer angles of the nostrils being 



