MOLLUSCA OF INDIA. 253 
The following is a fuller description of it :— 
Oxyrrs (Bensonra) convexa, Reeve. 
Locality. Nagtiba ridge, Mussoorie Hills. 
Shell subglobosely conoid, not umbilicated ; sculpture very fine, 
regular, wrinkly, longitudinal ribbing, both above and below ; colour 
bright straw-colour, or umber-brown, a bright ochre transverse band 
at the peristome ; spire moderately high, subconical; apex rounded ; 
suture well impressed ; whorls 7, convex : aperture lunate, sub- 
vertical; peristome thin, slightly reflected near the columellar 
margin, which is subvertical. 
Size : maj. diam. 16:5, min. 14-75, alt. axis 8-0, body-whorl 7 mm. 
Small var. from Kulu: maj. diam. 11-2, min. 9-2) alt. axis 5°75 
mm. 
This has six whorls, the lines of growth being fine and very regular 
give the surface a more decussate texture. It was obtained and 
given me by Ferd. Stoliczka, There are examples of this species in 
Mr. Blanford’s collection from Kamaon, and one from Simla. 
A Classification of Families and Genera treated of in the preceding 
pages, with the exception of some genera whose relative position 
as still doubtful, such as Kaliella and Sitala. 
Fam. ZONATID A. 
Subfam. ArtonPHANTINA, 
Genus Arrorpuanta. Peninsular India and Lower Bengal. 
Oxyres. Eastern Himalaya to Burmah. 
BensontA. N.W. Himalayas. 
Nizerria, n. g.*, G.-A.; solata, Bs, (type). Peninsular India. 
Subfam. MacrocnnamMiIna. 
Genus Macrocutamys. India throughout, Burmah, Malayana, and Africa. 
MicrocystinA. Andaman and Nicobar Islands. 
HewieLecta uumrureystana t, Lea (type). Malay Peninsula and 
Islands. 
Subfam. Henicarioninm. 
Genus GirAstA. 
AvstentaA. + N.W. Himalaya to Assam and Burmah, 
Ispycvs. 
Cryptosoma. Burmah. 
Hetrcarton. Australia. 
Dexuanta. Peninsular India, South. 
Arricarion. Africa and Peninsular India. 
Subfam. DurGenuns. 
Genus Durceita. Assam, Burmah, and Tenasserim. 
* This will be fully described in the next Part. 
+ This species, from Singapore, will be described with some of its allies. 
