1849.] Catalogue of Malayan Fishes. 1409 



Length of the tail, 9 inch. 



Distance between the nostrils, T ^ 



Greatest breadth of the disk, „ 4f 



Distance between the eyes Of 



Breadth of the mouth, 0^ 



Single young individuals occur at Pinang, but rarely. 



Gen. Pteroplatea, Milller und Henley 1837. 



The disk is nearly or more than twice as broad as long. Tail short, 

 generally shorter than the body, naked or with low fins. Mouth 

 slightly arched. The teeth do not extend to the angles of the mouth ; 

 they carry one to three points. The upper membranous valve of the 

 jaw is indistinct, without fringes. No papillae in the lower jaw. The 

 skin is smooth, or covered with tubercles. 



Pteroplatea micrura, (Bloch-Schn.) 



Trygon micrura, Bloch-Schn. 300. 



Russell, VI. Tenkee Kunsul. {Young.) 



Raja poecilura, Shaw, V. 291. 



Trygon kunsua, Cuvier, R. A. II. 400 ( 4 ) 



Trygon poecilurus, Bennett: Life of Raffles, 694. 



Pteroplatea annulata, Swainson, II. 319. 



Pteroplatea micrura, Muller und Henle, 169. 



Pteroplatea micrura, Richardson, Report, 1845,197. 



{Very young.) Above reddish- or bluish- brown, with numerous dark 

 dots, or with distant indistinct light spots ; beneath bluish- or reddish- 

 white. 



{Older.) Above bottle-green, or bluish-brown ; tail with black and 

 white or rose-coloured rings ; beneath whitish. Iris golden, pupil 

 transversely oval. 



Habit. — Sea of Pinang, Malayan Peninsula, Singapore. 



Bay of Bengal, Mouths of the Ganges, Red Sea, Sumatra, 

 Java, Borneo, China Sea. 



The snout is little prominent. The anterior margin of the pectorals is 

 a little longer than the posterior and slightly concave in the middle ; the 

 posterior is convex ; the external angle is conical, the posterior obtusely 

 rounded. In younger individuals the length of the disk, from the snout 



8 s 2 



