!02 



INDIA 



Boysia, with its twisted upturned mouth, while Lithotis is a 

 peculiar form allied to Succinea, to which group also probably 

 belongs Cainjitonyx, a limpet-like form with a very small spire, 

 peculiar to the Kattiawar peninsula. Camptoceras, an extra- 

 ordinarily elongated sinistral shell, with a loosely coiled spire, is 

 peculiar to the N.W. Provinces. 



Among the fresh-water pulmonates is an Ampullarina, a genus 

 only known elsewhere from the Fiji Is. and E. Australia. Crem- 

 nocoTich'us is a form of Littorina, peculiar to the W. Ghats, 

 which has habituated itself to a terrestrial life on moist rocks 

 many miles from the sea. The fresh-water operculates include 

 the peculiar forms Mainwaringia, from the mouth of the Ganges 

 (intermediate between Mclania and Pahidomus), Stomatodon, 



Fig. 202. — Characteristic Indian Mol- 

 lusca : A, Hypselostoma tubiferum 

 Blaiif. ; B, Camptoceras terebra Bens. ; 

 C, Gamptonyx Theohaldi Bens. 



Fig. 203. — Strejitaxis 

 Perroteti Pfr., Nil- 

 gliiri Hills: A, adult; 

 A', young form. 



Larina, Fossaruhis, Tricida. and others. The liivalves are neither 

 numerous nor remarkable ; Velorita, a genus of the Cyrenidae, is 

 peculiar. 



The land operculate fauna of India is singidarly rich and 

 varied. About 25 genera, and at least 190 species, occur. Here 

 we find the metropolis of Cyclophorus among the larger forms, 

 and of Diplomnnatina and Alycaeiis among the smaller. A large 

 proportion of the operculate genera are quite peculiar to the 

 extreme south of India and Ceylon. The appearance of a few 

 species of the European genus Pomatias is very remarkable. 



The carnivorous genera are poorly represented. A few Ennea 

 occur, while Streptaxis is practically confined to the extreme 

 south and nortl:-east. 



