312 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



conspicuous with age. Young with faint dark blotch below end of 

 snout. Length, 700 mm. (Norman.) 

 China, Japan. 



RHINOBATOS ANNULATUS Miiller and Henle 



Bhinobatus (Syrrhina) annulatus (Andrew Smith) Muixeb and Henle, Syst. 



Beschr. Plagiostomen, p. 116, 1841 (type locality: Cape of Good Hope). — 



Andeew Smith, 111. Zool. South Africa, Fishes, pi. 16, 1842 (Cowie Kiver; 



Algoa Bay).— Gray, List fish British Museum, p. 94, 1851 (Cape Sea).— 



DuM^BiL, Hist. Nat. Elasmobr., vol. 1, p. 487, pi. 10, flg. 6 (scutes), 1865 



(type). 

 Rhinoiatus annulatus Pappe, Edible Fish South Africa, p. 22, 1854 (Table Bay). 



— Knee, Reise Novara, Fische, p. 416, 1865 (Cape of Good Hope). — Pappe. 



Edible Fish South Africa, ed. 2, p. 22, 1866 (Cape Seas).— Gaeman, Mem. 



Mus. Comp. ZooL, vol. 36, p. 272, 1913 (South and East Africa ) .—Baenakd, 



Ann. South African Mus., vol. 21, pt. 1, p. 59, fig. 9a (nostrils and mouth), 



1925 (Simon's Bay to Natal). — Noeman, Proc. Zool. Soc. London, 1926, 



p. 964, text flg. 17 (type; Cape of Good Hope, Port Natal, Bird Island, 



Zululand coast). 

 Rhinoiatus (Rhinobatus) annulatus Bleekee, Nat. Tijdschr. Nederland. Indie, 



vol. 21, p. 58, 1860 (reference). 

 Rhinohatus columnae (not Bonaparte) Guntheb, Cat. Fishes British Mus., vol. 



8, p. 446, 1870 (Cape of Good Hope, Natal). — Thompson, Marine Biol. Surv. 



South Africa Rep. No. 2, p. 155, 1914. — Gilchrist and Thompson, Ann. 



Durban Mus., vol. 1, p. 285, 1916 (references). 

 Rhinohatus Nochii (part) Regan, Ann. Natal Gov. Mus., vol. 1, p. 242, 1908 



(Durban Bay). 

 Rhinoiatus rhinobatus (not Linnaeus) Von Bonde and Swakt, Fishes Marine 



Surv. South Africa, Spec. Rep. No. 5, p. 3, 1923 (reference). 



Snout moderate, bluntly pointed, margins straight or very little 

 concave; rostral ridges rather narrow, separated throughout their 

 length, parallel or converging little anteriorly, diverging posteriorly ; 

 eye 5 to 5% in snout, eye with spiracle 11,^ to I14 in space between 

 spiracles; mouth nearly straight, width 2% to 3 in preoral length; 

 nostrils moderately long, oblique, 1% to nearly twice mouth width, 

 internarial about equals nostril, front valve extends inward well 

 beyond level of inner nostril edge, nearly meeting that of opposite 

 side. Both folds of spiracle well developed, outer more prominent, 

 space between spiracles 2I/3 to 2% in snout. 



Skin covered with minute denticles, rather smooth to touch; series 

 of small, compressed spines in median line of back, in 1 or 2 groups on 

 each shoulder and some smaller spines around orbits and above 

 spiracles ; all spines less prominent with age. 



First dorsal nearly twice high as long, origin space behind ven- 

 trals about equal to interdorsal, base 2l^ to nearly 3 in interdorsal. 



Upper surface of body with dark annular ocelli, largest smaller 

 than eye. Length, 1,020 mm. (Norman.) 



South Africa. 



