igoQ.] 



N. Annandale : Report on flic Batoidci. 



29 



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

 posteriorly l:)y a single row of stout, short, retroverted 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, blunth' spinous tubercles. 



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

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



FlG. 4. 





oO°0 



ism^m^Mm 



y„ 



o ooo -qO - f;v / 1- o°« o o » o 



i 











ooQ 





o O ( 



Fig. .■^a. 

 Fig. 4. — Outline of fresh specimen of T. jcnkinsii, x c. -i-. 

 ,, 4rt. — Scales on the middle of the posterior part of the back of the same specimen, x lA. 



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. 



