içio.] 



N. AnnandaIvE : Notes on the Batoidei. 



pelvic fins, has an oval outline. The snout acutely pointed and much produced, 

 more than twice as long as the distance between the eyes. 



Colour. — ^Dorsal surface a dark livid purplish grey, changing to dull ochraceous 

 in the middle of the disk. Ventral surface white with a broad, irregular, deeply pig- 

 mented margin, which is more or less interrupted in front. 



Eyes small, not very prominent. 



Skill tough ; the entire dorsal surface (except that of the pelvic fins) and a con- 

 siderable part of the ventral covered by small indistinctly stellate scales, the project- 

 ing points of which are for the most part blunt. These scales are larger for the 

 most part on the head than on the rest of the disk, but on the posterior half of the 

 body some of them are markedly larger than the rest and bear sharp, straight spines; 

 on the fins and on the ventral surface they are very small. 



This species is closely allied to Blyth's T. marginatus , from which its produced 

 and pointed snout will at once distinguish it. It also occurs in the R. Ganges, and 

 is evidently the species named by Hamilton Raja fluviatilis. On this point I shall 

 have more to say on another occasion. 



A specimen was taken off the Madras coast from between 20 and 30 fathoms in 

 November, 190g. Its measurements were as follows :— • 



Breadth of disk . . . , . . . . 13875 cm. 



Length of disk . . 

 Breadth between eyes 

 Breadth of mouth 

 Length from mouth to vent 



135-0 



20-0 

 12-5 



8375 



The tail had unfortunately been removed before the specimen was brought to 

 the Museum , but we have recently obtained another specimen in which the tail was 

 apparently complete, but was less than twice as long as the body. 



Urogymnns asperrimus , Müller and Henle. 

 (Plate ii, figs, i, la, ih.) 

 Mem. Ind. Mus., ii, p. 37. 



Another large female specimen of this fish was taken off the Madras coast in 

 September, 1909. Curiously enough its tail was mutilated in exactly the same way 

 as was the case in the individual of the same species previously described. Its 

 measurements were as follows : — 



Breadth across disk . . . . . . . . 1200 cm. 



Length of disk „ . 

 Breadth between eyes 

 Breadth of mouth 

 Mouth to vent . . 



121-25 ,, 



2375 ,, 

 16-25 ,, 



lOO-O ,, 



This specimen had on the floor of the mouth, in addition to three finger-like pro- 

 cesses in the centre, a shorter process on either side. 



