MOLLUSCA OF INDIA. 97 
No. 11. Macrocutamys rnpica, ? Benson. 
Animal of a light purplish tint, the tail-lobe not lengthened, slightly 
overhanging. The right shell-lobe broadly triangular and extending 
to the apex. No lett shell-lobe shown. Shell, whorls 43; colour 
ochre-brown. Major diam. 21:0 mm.=0-83 inch. 
Dumdum, near Calcutta. 
It is unfortunate that no accurate drawings were made of these 
two species, showing the shells in different positions ; both are re- 
presented viewed from above, so that we cannot identify them with 
absolute certainty. No. 10, however, in its shell-lobes agrees 
best with MM. petrosa (vide Plate XIX. fig. 1), and in its coloration 
with Hutton’s description, and No. 11 agrees best with MW. indica. 
The third species from the neighbourhood of Calcutta is one 
which I have found in Assam and Cachar, and may be known at 
once by its sculpture (Plate XXI. figs. 9 & 10) from the other two. 
This I deseribe and name M. hardwickei, after General Hardwicke. 
Mr. G. Nevill, in the J. A.S. B. 1881, p. 182, founds a new species, 
M. pseudovitrinoides, on M. indica of Benson and the H. vitrinoides, 
Gray (thus identified), the animal of which was described by Strick- 
land in the P. Z.8. 1849 and figured on plate 2. Nevill gives no 
description ; he merely says “it is the common snail” throughout the 
plains of the Gangetic delta, and that he is indebted for a fine 
series of this species from Sylhet to Mr. J. Wood-Mason. It is 
quite impossible from this sort of data supplied with the first notice 
of a new species to know what was received, when we know there 
are three or four common snails of this type in the above delta, 
each equally abundant in different localities. There is no proof, in 
fact, that the Ajmeer form is the same as indica of Benson; and it 
is more than doubtful if the Ajmeer species is to be found in Sylhet. 
The accession of many thousand specimens in all the local genera 
preserved in spirit, for which magnificent collection I am indebted 
to the industry of Mr. Wm. Robert, of the Survey Department, 
who collected them in the Bhutan Mountains east of the Teesta, 
from their base to 10,000 feet, enables me to give drawings and 
descriptions of several species I had not got before, and renders the 
history of the present genus more complete. 
Passing from Macrochlamys to Austenia, Nevill, I find also in 
this last genus species with perfectly smooth shells, and others with 
delicate well-marked sculpture. I figure these on separate plates as 
a simple guide for identification, although, as shown in Macrochlamys, 
the sculpture has but a slight connexion with anatomical detail. 
Macrocuiamys (continued). 
Shells of large size, globose or depressedly globose ; sculpture, long?- 
tudinal, linear, rather wavy striation, with smooth ribbon-like 
intervals. (Vide Plate XXI. figs. 1, 2, 5, and 4.) 
Macrocuiamys rnpica, Benson. (Plate XVIII. figs. 5, 5 a.) 
Macrochlamys indica, Benson, J. A.S. B. vol. i. p. 13 (1832). 
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