192 



The animal agrees in colouration with those originally described 

 by Hutton ^ and only differs from Stoliczka's description* and 

 Semper 's coloured figure^ in that the scarlet colour of the head 

 and body is completel}^ restricted to the internal structures con- 

 nected with the eye-stalks. The rest of the extruded parts are of a 



1 c 1 



7 9 



Su'. 



3. 



Fig. 3. — Radular teeth of E. bicolor race barhudensis, general arrang-ement. 

 ,, 3a. — Radular teeth, one side of a complete row of teeth. 

 c. central ; :, 4, 7, and 9 lateral teeth. 



bright shade of lemon-^^ellow and the mantle is orange-scarlet. 

 We figure the radular teeth. Their shagreen-like arrangement is 

 shown in fig. 3. In general facies, doubtless also in function_, it 

 has an interesting resemblance to that of the papillae on the tongue 

 of certain carnivorous mammals. 



Type-specimen. No. M --|''S Zoological Surve}' of India 

 {Ind. Mus.). 



We found this race of E, bicolor fairly common, but b}' no 

 means abundant^ on Barkuda Island in the Chilka Lake in the 



1 Jojir. As.Soc, Bengal, III, pp. 8t), 93 (iy24j. 



^ lb., XI, pt. 2, pp. 169-171, pi. viii, figs. 7, 8(1871). 



S Reis. d. Philippineu, III, p. 250, pi. viii, fig. 14 (1870-1S94). 



