134 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XI. 



the horn on the mucous pore is fairly long. This species is not un- 

 common, but is inconspicuous owing to its small size. 



Nanina (Microcystina) perrotleti (Pfeiffer) is also a small dextral 

 species ; the shell about §" across, much flatter than M. tenuicola and of 

 a brownish colour, has the general appearance of a very young 

 N. pedina. The animal is of a bluish colour and very lively, the horn 

 on the mucous pore is well marked, and the mantle has two broad 

 shell-polishing lobes about -jV' broad, one protruding back, and the 

 other forward, over the shell. 



This species often escapes notice from its small size and general 

 resemblance to a young N. pedina. 



The next family, the Helicidce, is that to which all the common 

 English snails belong. 



Of Helix proper w r e have only one species, but we have some 

 species belonging to genera of which it is doubtful whether they 

 belong here or to the Pupidce. 



Our Helix is H. (Trichochloritis) propinqua (Pfeiffer). It is, as far as I 

 know, uncommon in Bombay, and I have never found an adult speci- 

 men alive. I have specimens of what appears to be the same species from 

 Mahableshwar and Panchgani, where it seems to be not uncommon. 



It is an elegant shell, from §" to f " across ; the spire is rather flat in 

 some specimens and a little raised in others. The adult animal forms 

 a reflexed lip, the aperture pointing slightly downwards. Colour 

 whitish with a single dark line running on the line of the suture. 

 It is a dextral shell, and but for that, is easily mistaken for a small 

 Arlophanta (Icevipes), which is perhaps partly why it has escaped notice. 



To the third family, the Pupidce, so called from their resemblance 

 to a chrysallis, belong five of our species, including two species which 

 should perhaps bo classed as Helicidce. 



The first species, Pupa (Leucochila) ccenopicta (Hutton) is a small 

 brown cylindrical shell J" in length and less than |" in breadth. The 

 aperture is oval and the adult shell has a wide lip of a lighter colour. 

 This species seems fairly common. 



Buliminus (Mastus) insularis is a small, solid, whitish-coloured 

 cylindrical shell about |" long and T V broad. The adult forms a 

 slightly strengthened lip. I have never yet found it alive in Bombay, 

 but it seems to affect somewhat drier localities than most of our land 



