188 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



ago under the direction of the late Sir Walter Elliot, who did 

 so much ahle and valuable work in making known the fauna of 

 Southern India. It looks like the work of a native artist, and shows 

 the animal to be of a pale lemon yellow, with a well-fringed pallial 

 margin to the foot. The accuracy of this drawing is very great, for 

 the artist has shown the difference in colour between the shell with 

 the animal inside it, very black, intensified by the very dark colour 

 of the visceral sac, and the empty shell with its warm brown 

 coloration. The specimen depicted was taken on "the coffee estates 

 at the foot of the Gudalur Pass, near Nelialam." This drawing may, 

 I think, originally have come from Dr. Jerdon ; the handwriting looks 

 like his, and the paper is exactly the size of that employed for the 

 hundreds of drawings Dr. Jerdon had made about that time ; and 

 he and Elliot worked a great deal together. 



Description of the Spirit Specimens. — The shell evidently does not 

 cover the whole body of the animal ; the head only, it would appear, 

 could be withdrawn under the peristome. In both specimens the foot 

 and dorsal lobes are of a rich orange colour, and the hardened mucous 

 covering the body is of this colour, agreeing with the note made by 

 Colonel Beddome mentioned above. The sole of the foot is greenish 

 grey, and the first point that strikes one is its extremely smooth, even 

 surface ; there is no contraction on the median line in either specimen 

 (and both have been put into rather strong spirit), as seen in that 

 of Ratnadvipia} There is only a slight crinkling on the margin 

 bordering the smooth plane of the foot. So smooth a surface I have 

 not seen before in any Indian species. A few very indistinct 

 segmental lines are visible in the smallest specimen, but no sign of 

 the longitudinal striation is to be observed as in some other South 

 Indian and Ceylon species. 



When the shell is removed, the difference between the very dark 

 indigo colour of the integument covering the visceral sac and the 

 much paler colour of the head and foot up to the mantle-zone is very- 

 striking, as shown in Sir Walter Elliot's drawing. The mucous 

 pore is rather small ; no overhanging process is seen in the spirit 

 specimens, but in the drawing a slight indication of this is to be 

 seen. On the pallial margin the usual parallel furrows are absent; 

 the fringed margin is bounded at once by a grooved and wrinkled 

 surface. There are no shell-lobes, the mantle edge is quite plain and 

 hem-like. The right dorsal lobe is of the usual form; the left is 

 divided above the central line of the neck, by a cut across its length, 

 into anterior and posterior lobes. On the neck and head of the animal 

 the grooves running from the eye tentacles backward, seen in some 

 Indian genera, are absent ; the general wrinkling of the body at this 

 point resembles that of Nilgiria Chenui. 2 



Generative Organs. — The retractor muscle of the penis is attached to 

 the lower wall of the branchial chamber at its extreme posterior end. 



Vide Laud and Fresh -water Moll. Ind., pi. Ixxxv, fig. 3. 

 Yule Land and Fresh-water Moll. Ind., pl. xcvi, fig. 1. 



