229 Records of the Indian Museum. [Vox. XVIII, 
The species, though closely allied to M. nodosa, is distin- 
guished from it by the costae on the surface of the shells being 
more regular and continuous and in having two instead of three 
rows of tubercles on the body-whorl. 
In the large series before me there are shells corresponding 
to Brot’s figures of the typical form, var. Bb and M. turcica bellio, 
Parreyss. There are, however, intermediate forms connecting the 
various varieties and it is therefore not necessary to distinguish 
them as different forms. 
Melanopsis subtingitana (Nevill), Annandale. 
1918. Melanopsis subtingitana, Annandale, of. c’t., pp. 163, pl. xx, 
fieSeet. 2, 
This species has only recently been described by Annandale 
from. two shells in the Indian Museum recorded as Melanopsis 
3. 
FrG. 3.—Type-specimen of Melanopsis subtingitana, var. laevis from 
the creek connected with Diala River, Mesopotamia. 
costata, var. by the late Mr. G. Nevill, and from two others from 
Mesopotamia presented to the Indian Museum by Colonel W. H. 
Lane. Dr. Bowell’s collection from Basra also contains a good 
series of the species. These shells agree closely with the type-shells, 
except that most of them are a little Jarger and have the ribs more 
obsolete. 
Var. laevis, nov. 
Two specimens from Mesopotamia, one from the banks of a 
dry creek connected with Diala River between Baguba and Sharo- 
ban collected by Dr. Boulenger, and the other from Basra by Dr. 
Bowell, are so different from the typical M. subtingitana as to 
deserve varietal rank. Both the shells ‘are nearly smooth and 
have the whorls much more regular than in the typical form. In 
other respects the two shells resemble the forma typica. 
Type-specimen No. M 11807/2 in the Zoological Survey of 
India (Indian Museum, Calcutta). 
