I9I9-] 1'- Southwell & B. Prashad : Studies of Indian Fishes. 231 



num and the stomach both contain large quantities of coagulated 

 material of the nature of a secretion from the uterine glands of 

 the mother and probably absorbed through the large spiracles. 

 The rectal gland, it may be remarked, is a very large elongated 

 sac opening distally into the rectum. The lobes of the liver, 

 of which the left one is the largest, are of a yellow colour. 

 The gall-bladder is a small and thin-walled sac with very little 

 secretion in it. The ovary is not to be distinguished in this 

 stage. 



Only a single female specimen of this species was obtained, 

 from a large female trawled at Periya Paar on the coast of Ceylon, 

 on the 7th of February, 191 1. 



Trygon uarnak (Forskal). 



1909. T. uarnak, Annandale, op. cif., pp. 22-24, fig- -■ 



The embryo is slightly more advanced than that of T. ktihlii 

 described above. The disc has assumed a more definite form, the 

 pectoral fins having grown further forwards ; otherwise the shape 

 of the disc and head is very similar. The fins-rays also are better 

 developed. 



The skin is thicker and a few tubercles along the mid- dorsal 

 line are to be seen. The colour is slightly brownish. 



The measurements of the male specimen are as follows : — 



Length of disc . . . . 25'2 mm. 



Breadth of disc 



Interorbital distance 



Snout (measured from the 



mouth) 

 Mouth to vent 

 Tail .. 

 Yolk-sac 

 Yolk-stalk 



20 mm. 

 5'6 mm. 



5 mm. 

 17*4 mm. 

 25 mm. 



12 mm. by 7 mm. 

 14 mm. 



Branchial filaments. — The specimen has only a few small fila- 

 ments coming out of the gill-slits ventrally. 



We have only a single male specimen before us, though 

 three were obtained from a large female trawled on the 4tli of 

 March, 1910, at Portugal Bay, Ceylon. 



Hypolophus sephcn (Forskal). 

 (PI. XIX, fig. 2.) 



1916. Hypolophus sephen, Chaudhuri, Mem. Ind. Mus., V, pp. 409-410. 



Chaudhuri in the paper cited above has given measurements, 

 etc., of two embryos from the Chilka Lake. The specimen before 

 us, also from the Chilka Lake, need not, therefore, be discussed at 

 length ; we only mention a few additional facts on the external 

 characters and the internal anatomy. 



