FISHES OF THE PHH,IPPINE ISLANDS AND ADJACENT SEAS 423 



axis; on either side between basal angles of outer and hinder 

 branches 2 or 3 enlarged tubercles. Spinous tubercles of tail, espe- 

 cially 4 nearest caudal spine, larger than those of dorsal ridge ; sides 

 of tail with few scattered prickles. 



Tail elongated, slender, with upper short fold, highest posteriorly 

 and overlapped in front by caudal spine, lower surface of tail with 

 much larger and slightly higher fold wliich originates below base of 

 caudal spine; caudal spine inserted about first sixth in tail length, 

 long as snout; pectorals form subcircular disk, length very slightly 

 less than width or about half tail length, front edges linear, outer 

 angles widely obtuse, hind borders rather feebly and inner mod- 

 erately convex; outer ventral border nearly straight, long as snout. 



Olive brown above, edges of disk and ventral fins lighter. Tail 

 black, lower surface and sides of basal fourth brown. Spine and 

 tubercles whitish. Lower surfaces bluish white, discal borders 

 brown. Length, about 794 mm. (Ogilby, McCulloch.) 



New South Wales, Queensland. 



DASYATIS USHIEI Jordan and Hubbs 



Dasyatis ushiei Jordan and Hubbs, Mem. Carnegie Mus., vol. 10, p. 114, 1925 

 (type locality: Mikawa Bay, Japan).— Fowleb, Proc. 4th (1929) Pacific 

 Sci. Congr,, Java, p. 506, 1930 (compiled). 



Snout tip but slightly produced, front angle 150^ ; eyes somewhat 

 elevated ; mouth width about 14 less than internarial, little less than 

 half preoral, which y^ space from mouth to inner hind angle of 

 ventrals; only 23 oblique rows of upper teeth; 7 oral papillae, in 3 

 groups of which median comprises 3 papillae; interorbital flattish, 

 % long as snout. Orbit large as spiracle which rhomboid and faces 

 about equally outward, upward, and forward. 



Body smooth and smooth shagreen only on posterior % of tail. 



Tail little more than twice disk length, slightly compressed ante- 

 riorly, terete and whiplike behind spine base; its upper edge with 

 rudimentary keel shorter than orbit located not far behind spine 

 base and lower edge with very low fold with origin opposite spine 

 base extending nearly % of space to tail tip, where grading into low 

 keel, covered with shagreen, which extends almost to extreme tail 

 tip; pectorals form disk nearly 14 broader than long, front margin 

 nearly straight. 



Above gray, with some blackish margins of irregular form and 

 disposition. Tail mostly blackish, white mottled with darker on 

 lower surface of thickened basal portion. Disk white below, with 

 darker clouds towards margin posteriorly. Length, 988 mm. (Jor- 

 dan and Hubbs.) 



Japan. 



156861—40 28 



