1406 Catalogue of Malayan Fishes. [Dec. 



Trygon uarnak, Var. 2, 3, 4, Muller und Henle, 158 {Young). 

 Trygon uarnack, Richardson: Report, 1845, 197. 



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



Indian Ocean, Red Sea, Bay of Bengal, Mouths of the 

 Ganges, China Sea, Cape of Good Hope. 



(Young.) Body above light reddish brown or greenish-olive, with 

 numerous black spots, between which the ground-colour appears like a 

 network ; beneath whitish ; tail brownish white with numerous black 

 rings or transversal bands. (Disk 6 to 9 inch, broad. — Var. 2 and 4, 

 M. u. H.) 



(Older.) Brownish- or greyish- olive with numerous whitish spots ; 

 posterior part of tail in some with indistinct blackish or whitish rings. 

 (Disk 3 ft. broad.— Var. 3, M. u. H.) 



(Adult.) Uniformly brownish- or greenish- olive. Iris golden ; pupil 

 transversely oval. 



In the very young individuals the eyes are very prominent and pro- 

 ject above the level of the spiracles. The skin is naked, and in the 

 centre of the back appears but a single heart-shaped white tubercle. 

 In a spotted individual, 9 inches broad, there is a second smaller heart- 

 shaped tubercle behind the former, and the head and the sides along the 

 spine of the back are scantily covered with minute distant heart-shaped 

 scales, which on the root of the tail are placed in a double longitudinal 

 series. On the tail appear numerous very minute, distant thorns, 

 which later disappear. In older individuals (upwards of 3 ft. broad,) 

 the head, back and sides and the anterior half of the tail are covered 

 with smooth orbicular scales, the intervals between which are filled 

 with many smaller than the rest. 



The disk is a little broader than long. The distance from the point 

 of the snout to the centre between the nostrils exceeds by one third 

 the distance between the nostrils. The snout is more prominent in 

 the young than in the adult. The tail is compressed towards the 

 spine, the rest cylindrical, tapering to a thin point. Its length is about 

 four times that of the body. On the lower surface appears a very 

 indistinct skinny hem. The spine is situated at the termination of the 

 anterior seventh or ninth of the tail. Its length is liable to consider- 

 able individual variations. The following dimensions were taken from 

 a young male, (Var. 3, M. u. H.) 



