586 Records of the Indian Museum. [Vol. XXII 



In the paper cited above some anatomical details are included ; 

 there is, however, an unfortunate typographical error in that fig. 

 5D has the wrong lettering 5F, placed next to it, and vice versa 

 with fig 5F. 



A fair number of specimens of this species were collected at 

 Dimapur, Assam, and at Imphal and Mingyang Pukri in the Mani- 

 pur Valley. Though the shell of all these specimens is beautifully 

 preserved, none of them have the soft parts well preserved. This 

 was previously noticed by us in the case of the specimens from 

 Seistan and the Punjab, and it appears that the internal partitions 

 in the shell are in some way responsible for the poor preservation 

 of the soft parts. The species is widely distributed and we have 

 recently seen some specimens from Sumatra. 



Camptoccras, Benson. 



1919. Camptoceras Iiirasei, Walker, op. cit-, pp. 1-6, pi. i. 



1919. Camptocevas, Annandale and Prashad, Journ- As. Soc. Bengal 



XIV, p. 457- 



1920. Camptocevas, id., tb., XN'MI. pp. 27-33. 



Camptoceras lincatum, Blanford. 



1914. Camptoceras lineatitm, Gude, Faun. Brit. hid. Moll. II, p. 46^. 



To Blanford's original description of the shell, quoted with a 

 copy of his figures by Gude, we have nothing to add, except that 

 the spiral lines bear minute chaetae when the specimen is quite 

 fresh or in a liquid medium. 



The animal agrees with Benson's description of C. terebra 

 and with Walker's figures of the Japanese C. hirasei. The foot 

 is narrow and tongue-shaped, bluntly pointed behind, relatively 

 small and not extending very much beyond the aperture of the 

 shell. The tentacles are long and filiform but slightly clavate (? 

 always ; see p. 581), with the eyes, which are small and sessile, 

 situated at their bases internally ; the external base of each ten- 

 tacle is slightly swollen. The snout is short, broad and blunt. 

 The edge of the mantle is greatly thickened. Some distance 

 behind the left tentacle there is a simple vascular fold — the paUial 

 branchial process — and the opening of the branchial chamber is 

 situated behind it. The aperture is large and, when the animal 

 is in a half expanded condition, patent. A fold arises behind and 

 below it on the side of the body and grows out as it proceeds 

 forward, into a long, almost epipodial process. As the animal 

 expands this process curls up in a spiral to form a complete 

 branchial siphon with an inferior oval orifice, which is directed 

 downwards, outwards and backwards. The faecal pellets are dis- 

 charged through this orifice which hes immediatelj^ behind the 

 anus. The blood is red and gives the whole animal a slightly 

 pinkish tinge. The foot and tentacles are suffused with pale olive 

 and minutely speckled with black and white, each of the latter has 

 in addition an oval black area lying midway between the tips 



