FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 421 



eyes little elevated each side. Spiracles I14 to II/2 times larger than 

 eyes. Third gill opening largest, subequal with eye. 



Skin smooth. 



Tail slightly longer than disk, with short low fold behind tip of 

 spine and longer lower one below, spine about equals interorbital ; 

 pectorals form broad subquadrangiilar disk, length IV5 to I14 its 

 width, front edge nearly straight or but slightly convex, hind edge 

 slightly convex; ventral broad, obtuse. 



Above ecru drab to fawn color, outer margins of disk pale, tail 

 also deeply colored like middle of back. Under surface of disk 

 creamy white, with outer margins of pectorals broadly pale brown. 



South Africa, Natal, Madagascar, India. Also in the Atlantic. 



380 to 384 A.N.S.P. Italy. C. L. Bonaparte. No. 219. Dr. T. B. Wilson. 

 Length, 315-410 mm. 



Subgenus Amphotistius Garman 



DASYATIS SINENSIS (Steindachner) 



Trygon sinensis Steindachner, Anz. Akad. Wiss. Wlen, vol. 29, p. 133, 1892 

 (type locality: Shanghai) ; Denkschr. Akad. Wiss. Wien, math.-nat. Kl., vol. 

 59, p. 382, pi. 6, 1892 (type). 



Dasyhatus sinensis Garman, Mem. Mus. Comp. Zool., vol. 36, p. 393. 1913 

 (Shanghai). — Lin. Sci. Rep. Nat. Tsing Hua Univ., ser. B, vol. 1, p. 166, 

 figs. 12-12a, pi. 5, fig. 7 (teeth), pi. 4, fig. 1 (scale), 1932 (Antnng). 



Dasyaiis sinensis Fowler, Proc. 4th (1929) Pacific Sci. Congr., Java, p. 505, 

 1930 (reference) ; Hong Kong Nat., vol. 1, p. 179, 1930 (compiled). 



Head to hind spiracle edge 6% in total length. Snout ly^ in head 

 to hind spiracle edge, as seen from above upper edge forms point 

 slightly less than right angle ; eye 11, 814 in snout, 5 in interorbital ; 

 mouth waved ; about 30 rows of upper teeth, pointed in male ; 5 oral 

 papillae, 3 close together, forward, others wider spaced near mouth 

 angles; internarial slightly greater than mouth width, hind edge 

 very slightly waved ; interorbital 2% in head to hind spiracle edges. 

 Spiracle close behind eye, equals 214 eye diameters, interspace 214 in 

 head to hind spiracle edge. 



Finely roughened above snout, over interorbital, branchial region 

 and back toward caudal spine, with asperities slightly larger on 

 vertebral line. 



Tail tapers, filamentous, spine removed though inserted near first 

 fifth of tail, with dermal fold above and little higher and longer one 

 below; pectorals form rhomboidal disk, front edge largely convex, 

 angles widely convex and hind edges nearly straight; ventrals with 

 wide hind edges, obtuse ; claspers robust, long as interorbital. 



Above and medially light gray, with broad lateral yellowish brown 

 edges. Disk length, 320 mm. ; tail, 510 mm. (Steindachner.) 



China, 



