FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 427 



5110. Sandakan Bay, Borneo. March 3, 1908. Length, 630 mm. 



U.S.N.M. No. 6529. Hong Kong. William Stimpson. Length, 350 mm. 

 Type of Dasybatus varidens. A young male with rather slender, pointed 

 claspers about equal to internarial space. The contour shows greatest disk 

 width opposite disk center and posterior inclined edges of pectorals slightly 

 convex. Traces of blue blotches or spots on disk medially and tail with at 

 least 3 pale or buff transverse rings terminally. Caudal spine removed. 



U.S.N.M. No. 84207. Philippine Islands. Length, 313 mm. (not 613 as given by 

 Fowler and Bean). 



U.S.N.M. No. 31516. New Guinea. Australian Museum. Length, 530 mm. 



U.S.N.M. No. 26519. No locality. No donor. Length, 390 mm. Only 3 small 

 pale ocelli on right pectoral posteriorly and basally and 2 on left pectoral. 



U.S.N.M. No. 39988. Ugi, Solomons. Australian Museum. Length, 535 mm. 

 Well marked, with variable gray ocelli posteriorly on disk above. 



U.S.N.M. No. 5800. Zamboanga. Dr. E. A. Mearns. Length, 345 mm., tail cut 

 off near base. 



DASYATIS BREVIS (Garman) 



Trygon hrevis Gabman, Bull. Mus. Comp. Zool., vol. 6, p. 171, 1880 (type lo- 

 cality: Payta, South America). 



Dasibatis bretns (Garman) Jordan and Gn-BEaiT, U. S. Nat. Mus. Bull. 16, p. 70, 

 1883 (Peru). 



Dasybatus brevis Gabman, Mem. Mus. Comp. Zool., vol. 36, p. 396, pi. 32, figs. 

 5-6, 1913 (Peru and California). 



Dasyafis brevis Fowlee, Mem. Bishop Mus., vol. 10, p. 25, 1928 (Honolulu; 

 type of DasyaUs hatvaiensis) ; Proc. 4th (1929) Pacific Sci. Congr., Java, 

 p. 505, 1930 (Hawaii; California) ; Mem. Bishop Mus., vol. 11, No. 5, p. 314, 

 1931 (Honolulu). 



DasyaUs liawaiensis Jenkins, Bull. U. S. Fish. Comm., vol. 22 (1902), p. 420, pi. 

 1, fig. 1, 1904 (type locality: Honolulu). — Jobdan and Evebmann, Bull. 

 U. S. Fish Comm., vol. 23, pt. 1 (1903) p. 48, pi. 4, fig. 1, 1905 (type). 



Trygon hawaiensis GtJNTHEB, Journ. Mus. Godeffroy, pt. 17, p. 494, 1910 (copied). 



Depth 15% to end of tail ; head 7% ; disk length 1% in its width, 

 1^ in tail. Snout 1% in head, meets at wide or blunt angle in front; 

 eye 6, 4^4 in snout, 4 in interorbital ; dentary width 3 in head ; teeth 

 in 30 rows in jaws rhombic, smooth, cusps barely evident; nostrils 

 deep, simple, internarial slightly greater than dentary width; inter- 

 orbital 1% in head, nearly level. Gill openings small, equidistant, 

 last smallest. Spiracles greatly larger than eye, deep, edges entire. 



Skin smooth. Caudal spine about 1% in interspiracle width. 



Dorsal as short low median cutaneous fold behind spine; anal as 

 longer and deeper fold; pectorals with outer edges convex, both in 

 front and posteriorly; ventrals rather obtuse, hind edge convex; 

 claspers short and pointed. 



Uniform brown above, disk paler marginally. Lower surface of 

 disk whitish. Tail dusky to blackish terminally, also cutaneous 

 dorsal and anal folds. 



Hawaiian Islands. Also Peru and California. Garman says 

 " Disk naked in young. Adults have three rows of tubercles on the 

 back." 



