244 PROCEEDINGS OF TIIE MALA.COLOGICA.L SOCIETY. 



Genus ARIOPHANTA. 

 Section I : Typical, sinistral (Ariophanta). 



A. Narrowly perforate. 



a. Not horny ; spirally banded above, or white or broion throughout. 



1. Ariophanta Icevipes (Mull.) : Bombay, Eastern Guzerat. 



Syn. : H. trifasciata, Chemn. 



2. A. Laidlayana (Bs.) : Western and South-western Bengal, 



Orissa, etc., to south of the Godavari River. 



3. A. Cadapaensis, Nev. {Kadapaensis) : Nullamalai, Xurnool, and 



Cuddapah, in Madras Presidency (not the Nicobar Islands). 

 Syn. : H. Nicobarica, Chemn. 



b. Horny, brownish, more or less translucent. 



4. Ariophanta interrupted (Bs.) : Bengal, Orissa, Northern Circars, 



Vizagapatam; also South Canara. 

 Syn. : H. Rimalayana, Lea. 

 Subspecies : 



A. interrupta: Bengal, Orissa, etc. 



A. immerita, Blf. : South Canara, near Malabar Coast. 



5. A. Bajadera (Pfr.) : Bombay Presidency, south of Nerbudda R. 



Syn. : H. ammonea, Val. 



6. A. intumescens, Blf. : Mahableshwar. 



7. A. Canarica, n.sp. : South Canara. 



B. Openly umbilicated. 



8. A. cysts (Bs.) : Mountains near western coast of India, from 



Kadur in Mysore to Animalais. 

 Syn. : H. auris, Pfr. ; II. cyslis, live. 

 Subspecies : 



A. cysis : Nilgiris, Animalais. 



A. ampullar oides (Rve.): Nilgiris. 



A. Dalyi, Blf. : Kadur, Mysore. 



9. A. thyreus (Bs.) : Brahmagiris, Nilgiris, Animalais, and 



Balarangam Hills. 

 Subspecies : 



A. thyreus: Nilgiris, etc. 



A. ryssolemma (Albers) : Sispara, Nilgiri Hills. 



A. hetercea, nov. : Neduwattam, Nilgiri Hills. 



Section II : Dcxtral (Xestina). 

 A. Colour uniform or nearly so, no spiral bands of colour. 

 a. Decussated above. 



10. A. semiruyata 1 (Beck): Peninsula of India and Northern 



Ceylon. 

 Syn. : Galaxias Tranquebarica, Beck. 



1 This is an extremely variable shell, and, since it is widely spread and common, it 

 is wonderful that more names have not been proposed. The two specific terms 



