86 On the Land Shells of India. [Feb. 



the rock with such firmness as to render it difficult to detach them 

 without breaking. 



I found one or two buried in the earth, among the preceding 

 species. 



From their being covered with clay, I was at first inclined to pass 

 them, thinking they were the nidi of some small species of fly. They 

 were scattered over the bleak face of the rock in great numbers. 



The " Bulimus Obscurus" is said to cover itself with mud in the man- 

 ner as here mentioned, but it also changes the materials of this coating 

 according to circumstances ; for instance, if on a tree, it makes use of 

 bits of lichen to conceal itself, or if on rocks, it uses clay and so on. 

 Perhaps the above species may be found to do likewise. 



No. 8.— Pupa. 



Animal. — With four tentacula, retractile, clubbed at the tips ; the 

 superior pair longest, and bearing the eyes. The upper pair of tentacu- 

 la and a line along the back leading from them are vermilion coloured ; 

 the lower tentacula minute, and with the rest of the animal very pale 

 yellow ; body elongate, inclining to a point posteriorly. 



Shell. — Thin, vermilion-coloured when living, but diaphanous and 

 colourless when cleared of the animal, cylindrical, obtuse at the sum- 

 mit ; whorls seven or eight ; aperture rather subquadrate, with four 

 teeth, and corresponding indentations externally ; length about three 

 lines ; margins of the mouth reflected. 



These shells I discovered first at Mirzapoor beneath garden pots, and 

 at the base of the walls of my Bungalow, in company with " Bulimus" 

 No. 5, in September, 1832. Their habits appear to be the same ; they 

 were however very scarce, and I could only find one or two buried with 

 Pupa No. 6, in the rocks between Agra and Neemuch. 



No. 9. — Genus Succinea. 



Animal. — With four tentacula, short and thick ; the superior pair 

 bearing the eyes at their posterior summits. Colour greenish. 



Shell. — Thin, fragile, diaphanous, and colourless ; aperture longer 

 than broad, and ovate ; margins edged ; lines of increase delicate and 

 distinctly seen ; spire prominent ; whorls twisting rapidly and four in 

 number. The body whorl forming nearly the whole shell. Length of 

 my largest specimen half an inch. 



In form these shells are very like the Lymnese. I found them ad- 

 hering to the face of the rocks at Beana in December, 1832, along 

 with Pupa No. 7. There was a thin coat of a hard gum-like substance 

 closing the mouth of the shell. 



I also found a few buried with Pupae in the earth. 



