igog.] 



N. Annandale : Report on the Batoidei. 



29 



Skin fairly tough. A' few enlarged rounded denticles in the scapular region followed 

 posteriorly by a single row of stout, short, retro verted spines with flat bases, the 

 row extending on the tail to the base of the anterior spine ; the middle of the back 

 occupied by a pavement of small, flat, round scales, which gradually become 

 smaller towards the periphery. The pectoral and pelvic fins naked ; the tail 

 covered with small, bluntly spinous tubercles. 



Moiith. — Jaws feebly undulated ; teeth white, practically uniform in size, each with a 

 low transverse ridge situated near the posterior margin and with a distinct trans- 









Fig. 4a. 

 Fig. 4. — Outline of fresh specimen of T. jenkinsii, x c. -}. 

 ,, 4a. — Scales on the middle of the posterior part of the back of the same specimen, x i^. 



verse depression in front. Processes on the floor of the mouth four in number, re- 

 sembling those of T. gerrardii but with the two central ones a little further apart. 



