468 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Mus., vol. 42, p. 588, 1912 (Batavia). — Pearson, Ceylon Administr. Pep., 



1915-18, pp. F10-F14.— Malpas, Ceylon Administr. Rep., 1921, p. E8.— 



TiEANT, Service Oc(5anogr. Peches Indo-Chine, 6* note, p. 79, 1929 (Cochin 



China). 

 Myliohates nieuhofii Richardson, Ichth. China Japan, p. 198, 1846 (Chinese and 



Australian Seas), 

 Myliobatis nienlwfi Bleeker, Versl. Meded. Akad. Wet. Amsterdam, vol. 12, 



p. 30, 1861 ( Singapore). ^ — Jordan and Snyder, Annot. Zool. Japon., vol. 3, 



p. 43, 1901 (Japan). 

 Mylio'batis nieuhofii SotrrHWErx, Ceylon Administr. Rep., 1912-18, pp. E42, B49, 



E50.— PiLLAY, Journ. Bombay Nat. Hist. Soc, vol. 33, p. 353, 1929 



(Travancore). 

 Mylioiatis nichofii Fowler, List Fish. Malaya, p. 19, 1938 (reference). 

 Aetomylaeus nicJiofii Garman, Mem. Mus. Comp. Zool., vol. 36, p. 436, 1913 



(India, East Indies, Japan). 

 Aetomylus nichofii Fowler, Proc. 4th (1929) Pacific Sci. Congr., Java, p. 506, 



1930 (reference) ; Hong Kong Nat, vol. 1, p. 184, 1930 (compiled). 

 Aetomyleus nichofii Chevey, Inst. Oceanogr. Indochine, 19* note, p. 7, 1932 



(Indo-China). 

 Raja fasciata Shaw, General zoology, vol. 2, p. 286, pi. 143, 1804 (on Willoughby ; 



on Mookarah tenkee Russell). 

 Rata macrocephala (Parkinson) Richardson, Ichth. China Japan, p. 198, 1846 



(name in synonymy). 



Depth 51/^ in disk length as measured to hind pectoral edge; head 

 31/8 to 31/2 ; disk length 12/3 to 1% in its width, 21/2 to 41/3 in tail. 

 Snout 1% to 2 in head, forms pointed lobe at low level in front ; eye 

 7 to 7ys, 3% to 4 in snout, 414 to 7 in interorbital ; dentary width 

 2% to 3 in head ; teeth with broad median row and 3 narrow lateral 

 rows each side; upper lip very finely and inconspicuously fringed, 

 lower entire; nostril each simple deep pit, rather larger internarial 

 little less than mouth width; interorbital 1% to 1% in head, broad, 

 nearly level with slight depression at fontanel. Gill openings small, 

 subequal, last smallest. Spiracles large, deep, twice eye, shielded 

 above to open laterally. 



Skin smooth in young, very finely though imperfectly asperous 

 over much of disk above with age. No caudal spine. 



Dorsal triangular, front edge 2^3 to 3% in head ; no anal ; tail long, 

 slender, whiplike; pectoral little broader than long, its front edge 

 nearly straight, hind edge slightly concave, outer and hind angle both 

 narrowly pointed ; ventrals long, rather slender, ends convex ; claspers 

 y^ front ventral edge, conic, extend well beyond fin. 



Back dark brown anteriorly with 3 to 5 transverse or horizontal 

 gray bands, posteriorly large, rather close set, variable, rounded gray- 

 ish blotches. Tail of young rather irregularly blotched dusky or 

 dark brown on whitish ground color. Under surface of body whitish, 

 with age hind margins of pectorals rather narrowly dusky. 



India, Ceylon, Burma, Pinang, Singapore, East Indies, Philippines, 

 Cochin China, China, Japan, Australia, Victoria. Of the three speci- 



