MOLLUSCA OF INDIA. 99 
between the main point and the outermost ; at the tenth and eleventh 
this inner tooth almost disappears, and the first laterals are unevenly 
bicuspid, the inner cusp being the longest; the outermost laterals 
decrease gradually in size, and at last are short evenly bicuspid teeth. 
Macrocutamys perrosa, Hutton. (Plate XXII. fig. 1; animal, 
Plate XIX. figs. 1, 1a.) 
Macrochlamys petrosa (Helix ?), Hutton, J. A. 8. B. vol. iii. p. 83 
(1834). 
Helix petrosa, Pir. Mon. Helic. vol. i. p. 56; Conch. Ind. p. 37, 
pl. Ixxxvii. figs. 7-10, and note 18, p. viii (good figure as regards 
external form, not correct near umbilicus). 
Macrochlamys indica, Theobald, Supp. Cat. p. 18. 
Nanina vitrinoides, not separated by several authors, and Chemnitz, 
Helix, no. 689, p. 228 (several species are drawn, all trom India), 
Locality. Rajmahal on Ganges (aban), 200 miles from the sea at 
head of the delta. 
Shell depressedly conoid, base flat, umbilicated, solid; sculpture, 
longitudinal lines, rather broad, waved, at irregular distances apart 
(Plate XXI. fig. 2); colour dull umber-brown, paler beneath ; spire 
moderately high, sides convex; suture adpressed; whorls 6, re- 
gularly wound, sides convex, the last rounded; aperture broadly 
lunate, subyertical ; peristome rather thickened, somewhat sinuate 
on lower margin, very oblique. 
Size: maj. diam. 24-2, min. 21°5; alt. axis 10°8, body-whorl 7°5 mm. 
3 0:95, "5. O'S. “s, 0-435 0-30 inch. 
This shell was sent me by the late Mr. Raban, Bengal C.S. It 
differs in its form from its very close ally zndica, from Calcutta, 
the sides of the spire being rounder, not so tumid below, and in its 
far larger size. ‘The animal has not been seen by me. 
IT have identified it with the form Hutton collected near Mirzapur, 
although I have not seen any shells from that locality; but as he 
got it at Tara in the low range of rocky hills (August 1832), the 
Rajmahal shell is very likely to be the same, habitat and climate 
being similar, and both places lying on the right bank of the 
Ganges; he also gives the size as about one inch. I have no 
specimen from Calcutta so large as this. I have already quoted 
Hutton’s description of the animal of petrosa in my history of the 
genus. 
The Bhaugulpur form seems identical with Mr. Raban’s shells. 
I give a drawing of the animal taken by H. T. Blanford on July 1st 
(Plate XIX. figs. 1, 1 @), from one made under the superintendence 
of Ferd. Stoliczka, and among the set of drawings left by him to 
the library of the Indian Museum, and I append Capt. J. Hutton’s 
description in full. 
“No. 3. Genus Hetrx ? 
“ Animal. Dark brown or blackish, with four tentacula, the two 
superior ones being longest and bearing the eyes at their summits ; 
