410 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Above drab brown, uniform, top of tail dusky. Under surface of 

 disk uniform white and under surface of tail light brown. 



Red Sea, Zanzibar, India, East Indies, Japan, Polynesia. Also 

 reported from the Philippines by Elera. According to Garman 

 possibly a variety of Dasyatis uarnah. 



U.S.N.M. No. 51712. Apia, Samoa. Bureau of Fisheries. Length, 1,195 mm. 

 Type of Himantura fai. 



DASYATIS BLEEKERI (Blytli) 



Trygon bleekeri Blyth, Journ. Asiatic Soc. Bengal, vol. 29, p. 41, 1860 (type lo- 

 cality: Bengal). — DuMfiRii.. Hist. Nat. Elasmobr., vol. 1, p. 593, 1865 (copied). 

 — GiJNTHEB, Cat. Fishes British Mus., vol. 8, p. 475, 1870 (copied). — Day, 

 Fishes of India, pt. 4, p. 738, pi. 195, fig. 3, 1878; Fauna British India, 

 Fishes, vol. 1, p. 54, 1889. — Annandale, Mem. Indian Mus., vol. 2, p. 26, pi. 3, 

 fig. 9 (mouth), 1909 (off Burma and Orissa). — Pearson, Ceylon Admin- 

 istr. Rep., 1915-18, p. F14.— Hoka, Journ. Nat. Hist. Soc. Siam, vol. 6, p. 

 173, 1923 (Nontaburi) ; Mem. Roy. Asiatic Soc. Bengal, vol. 6, p. 464, 

 1924 (Tale Sap, Outer Lake). — Tikant, Service Oc6anogr. Peches Indo- 

 Chine, 6' Note, p. 175, 1929 (Cochin China).— Suvatti, Index Fish. Siam, p. 

 5, 1937 (reference). 



Dasytatus ileekeri Gaeman, Mem. Mus. Comp. Zool., vol. 36, p. 379, 1913 (com- 

 piled). — Suvatti, Index Fish. Siam, p. 6, 1937 (Ko Yai; Kwae Yai). 



Dasybatus iHimanturus) tleekeri Chevey, Inst. Oc^anogr. Indochine, 19* 

 Note, p. 7, 1932 (Cochin China). 



Head to hind spiracle edge 8% in total length. Snout I14 in head 

 to hind spiracle edge; eye 8%, 6^ in snout, 4% in interorbital ; jaws 

 distinctly undulated, upper medially forms narrow conical downward 

 projection, lower with corresponding median concavity; teeth dark 

 reddish brown, with single transverse ridge, very distinct on unworn 

 teeth and divides as 2 equal convex surfaces marked with longitudi- 

 nal corrugations; on mouth floor 2 long fingerlike processes nearer 

 one another than either to mouth angle but rather widely separated ; 

 interorbital 21^4 in head to hind spiracle edge. Spiracles close be- 

 hind and little larger than eyes, interspace 2. 



Large round tubercle in middle of back, commonly 3 smaller dis- 

 posed before and 3 similarly behind. Tubercles sometimes along 

 upper tail surface to caudal spine, with age extend to its extremity. 



Tail long, whiplike, spine about first eighth of its length or 2% 

 in head to hind spiracle edge; pectorals form subrhomboidal disk, 

 length 2V3 in tail, width 1^ in its length, front edges slightly sinuous 

 and hind and outer angles broadly rounded. 



Above uniform dark brown. Ventral surface in young white, with 

 broad dark-brown margin, with age broadens over most of disk; 

 sometimes leaving distinct median streak which may be obscured by 

 dark blotches or disappear. (Day, Annandale.) 



India, Ceylon, Cochin China. Known by its uniform coloration 

 above, the tail without pale rings. Blyth reported one 2,465 mm. 



