DASYBATUS IMBRICATUS. 379 



mixed with stellate spines, especially on the tail. Tail much longer than the 

 disk, without cutaneous folds, with a serrated spine. 



Back grey, with a blackish tint, male with bluish streaks near the margins, 

 tail blackish; white below with a more or less distinct broad blackish margin 

 along the outer and the hinder edges. 



Burma; Ganjam; India. 



Dasybatus bleekeri. 



Trygon bleekeri Blyth, 1860, Journ. Asiat. soc. Bengal, 29, p. 41; GtJNXH., 1870, Cat. fishes Brit, mus., 8, 

 p. 475; Day, 1878, Ind. fishes, p. 738, pi. 195, f. 3; 1889, Fauna Brit. Ind., 1, p. 54; Annandale, 

 1909, Mem. Ind. mus., 2, p. 26, pi. 3, f. 9. 



Disk little broader than long; snout produced, narrow, acute, its length 

 one third of that of the disk or twice the distance between the eyes. Mouth 

 strongly waved, with two papillae near the middle on the bottom. Scales in 

 pavement from head to base of tail over the middle of the body, with depressed 

 crowns and rounded bases; intermixed larger and smaller tubercles appear 

 above the abdominal region and on the back and the sides of the tail to the spine. 

 A large round tubercle on the middle of the back is surrounded by smaller ones. 

 Tail three or more times the length of the disk, rough to its end. 



Back dark brown, unspotted; tail without light rings; ventral surface 

 white, with a broad margin of dark brown which widens with age until the white 

 nearly or quite disappears, or is blotched and clouded with brown. 



Apparently one of the numerous varieties of D. uarnak. 



Burma; Orissa; Bengal. 



Dasybatus imbricatus. 



Raia imbricata Schneider, 1801, Bloch Ichth., p. 366. 



Isacurrah tenkee Russell, 1803, Coromandel fishes, 1, p. 3, pi. 4. 



Tenkec shindraki Russell, 1803, Coromandel fishes, 1, p. 3, pi. 5. 



Trygon imbricata Cuv., 1817, Reg. anim., 2, p. 136; MtJLLER & Henle, 1841, Plagios., p. 164; T. Cantor, 



1849, Malay, fishes, p. 425; Dumeril, 1865, Elasm., p. 606; GtJNTH., 1870, Cat. fishes Brit, mus., 



8, p. 481; Day, 1878, Ind. fishes, p. 739; Annandale, 1909, Mem. Ind. mus., 2, p. 32, pi. 3, f. 5. 

 Pastinaca brevicauda Swains., 1839, Class., 2, p. 319. 

 Pastinaca dorsalis Swains., 1839, Class., 2, p. 319. 

 Trygon walga MtJLLER & Henle, 1841, Plagios., p. 1-59, pi. 51, f. 1; Bleeker, 1852, Verh. Bat. gen., 24, 



Plagios., p. 67; Blyth, 1860, Journ. Asiat. soc. Bengal, 29, p. 591; Dumeril, 1865, Elasm., p. 589; 



GtJNTH., 1870, Cat. fishes Brit, mus., 8, p. 475; Day, 1878, Ind. fishes, p. 738, pi. 194, f. 3. 

 Trygon heterurus Bleeker, 1852, Verh. Bat. gen., 24, Plagios., p. 67; Dumeril, 1865, Elasm., p. 591. 

 Trygon polylepis Bleeker, 1852, Verh. Bat. gen., 24, PIagio.'=., p. 73; Dumeril, 1865, Elasm., p. 590; 



GtJNTH., 1870, Cat. fishes Brit, mus., 8, p. 475. 

 Trygon dadong Bleeker, 1856, Nat. tijds. Ned. Ind., 10, p. 355; Dumeril, 1865, Elasm., p. 591. 

 Trygon nuda GtJNTH., 1870, Cat. fishes Brit, mus., 8, p. 476. 

 Leiobatis (Trygon) nuda Bleeker, 1879, Verh. Kong, akad., 18, Enum., p. 33. 



