MOLLUSCA OF INDIA. 249 



The animal when taken was thus described : Long body, light 

 faint green, pink at the extremity of foot, at znucous ghmd rather 

 truncate. Tentacles very long, the oral also and drooping. 

 Underside of foot of a pale orange colour and of a richer tint near 

 the mouth. Tentacles of a light neutral grey tint. 



Macbochlamts vesica, n. sp. (Plate CXVIII. figs. 5-5 c x 2-4.) 



Locality. Hengdan, Burrail Eange {Godwin- Austen'). — No. 510 

 B.M. Coll. 



Shell depressedly conoid, umbilicated, solid, with shiny 

 epidermis; sculpture close fine trans\erse lines of growth, per- 

 Jectly glassy; colour pale ochre, milky white on spire; spire 

 conoid, apex acuminate ; whorls 5, sides somewhat flat, the last 

 somewhat depressed ; aperture oblique, laterally oval ; peristome 

 thin, rather sinuate above, very oblique on columellar margin 

 and scarcely reflected. 



Size: maj. diam. 147, min. 12*0 ; alt. axis 6'5 mm. 



Xliasi (No. 511 B.M. Coll.). This is a more sohd shell, higher 

 in the spire, and the peristome thickened. 



Macbochlamts tesica, n. sp. (Plate CXX. figs. 1-1 c.) 



Locality. Ainakhal, Hailakandy, Cachar {F. J. Ede, Esq.). — 

 No. 1315 B.M. Coll. A large number were sent preserved in 

 spirit. 



The animal is pale ochre throughout, only on the wall of the 

 branchial chamber were faint spots to be seen ; it is also spotted 

 sparsely with white, so is the border of the rectum, kidney, and 

 liver-lobes (fig. 1). The right shell-lobe lies below the periphery 

 and the shell, the left shell-lobe is long and narrow. The left 

 dorsal lobe is in two parts, the posterior narrow and elongate. 



The genitalia (figs. 1 a and 1 h) were not in the stage of full 

 development ; they are of the true Macrochlamys type. These 

 characters may be noticed : — The coiled caecum of the penis is small, 

 few-whorled. The amatorial organ is very large, sharply bent near 

 the point, and bluntly rounded at the distal end. 



The jaw (fig. 1 c) is somewhat straight on the cutting-edge with 

 a slight central projection. The marginal teeth are nearly evenly 

 bicuspid. I'ormula : — 



25 . 2 . 12 . 1 . 12 . 2 . 25 

 or 39 . 1 . 39. 



M. vesica was also obtained over a large extent of country, 

 represented by specimens from the following localities : — 



The Lukah Valley, Jamtia Hills, No. 500 B.M. Collection 

 (this, a single specimen, is extremely solid, fully grown, 13'5 mm. 

 in maj. diam.). Koliaghur tila near Tezpur, Assam, No. 515 B.M. 

 Coll. (3 sp.). The Burroi Gorge, foot of hills, Durrang, Assam, 



