1849.] Catalogue of Malayan Fishes, 1407 



From the snout to the mouth, ft. 3f inch. 



„ mouth to the anus, 1 Of 



Length of the tail, 5 3| 



Greatest breadth of the disk, 1 lOf 



Distance between the nostrils, If 



,i „ eyes, 3 



„ from the snout to the eyes, 3f 



Breadth of the mouth, If 



Young individuals of this species are numerous at all seasons in the 



Straits of Malacca, but larger ones, with the body about 4 ft. in 

 length, are uncommon. 



Trygon imbricata, (Bloch-Schneider). 



Raja imbricata, Bloch-Schn. 366. 



Russell, IV. Isacurrah Tenkee. {Very young.) 



Cuv. R. A. II. 399 0). 



Trygon imbricata, Miiller und Henle, 164. 



Trygon imbricata, Bleeker: Verh. Batav. Genoots. XXII. 6. 



Above lighter or darker brown ; the tail in some lighter than the 

 body ; beneath white. Iris golden ; pupil transversely oval. 



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

 Bay of Bengal, Java, Madura. 



The snout is acutely pointed ; the disk is of equal length and breadth ; 

 the external and the posterior angle of the pectorals are rounded. The 

 distance between the nostrils is less than one half of that from the 

 snout to the centre between the nostrils. The tail is but little longer 

 than the body. The head from between the eyes is covered with 

 minute, somewhat distant scales. They are heart-shaped, of unequal 

 size, with the apex directed towards the snout. On the back appears 

 an irregularly oval patch of similar scales, with their points directed 

 towards the tail. Between the occiput and the scapular region appear 

 a series of single scales larger than the rest. The anterior fourth of 

 the tail is compressed and above covered with scales like those of the 

 back, with a mesial line of distant lanceolate scales, which gradually 

 increase in length towards the two spines. The anterior of the two 

 spines is situated at the termination of the anterior fourth of the tail. 

 It is a little shorter than the posterior, which js situated a little more 



8 s 



