Macrochlamys indica Godwin Austen, 1883
Remarks on Macrochlamys indica – “This species and M. petrosa were for a long time identified with Helix vitrinoides, Desh. (Mag. Zool. 1831, p. 26), a shell of unknown origin and described as imperforate. The original figure given of H. vitrinoides has no great resemblance to either of the Indian species, but Benson's undescribed Macrochlamys indica, identified with the present form by some writers, appears to have been the same as Hutton's Nanina petrosa, though, as it was said to occur from Calcutta to Cawnpore, it may have comprised the present species also. Nevill's N. pseudovitrinoides was not described and was only identified as "the common snail" throughout the Gangetic Delta and distinct from M. petrosa. As more than one Macrochlamys is common in the Gangetic Delta, it is uncertain to which Nevill's name belongs. The first complete description of the present species is that by Col. Godwin-Austen, and his name M. indica is accepted, although the shell is not the same as Benson's M. indica, which was never described. No confusion with Euplecta indica, Pfr. (p. 60), is possible, as that belongs to a distinct genus.” (Blanford & Godwin-Austen, 1908)
Blanford & Godwin-Austen (1908) descriptions on Macrochlamys indica – “Shell perforate, depressed, smooth, polished throughout, translucent, pale brownish tawny, not distinctly striated, but with microscopic longitudinal impressed lines, slightly flexuous and not close together; spire low, conoid, suture slightly impressed whorls 5½, slightly eomex above, the last not descending, rounded at the periphery, moderately convex beneath; aperture slightly oblique, broadly lunate; peristome thin in one plane, the coluraellar margin curved, oblique, never quite vertical, carried forward and briefly reflected above.”
“Animal purplish grey not black, elongate; “the right shell-lobe small, the left is narrowly reflected over the edge of the peristome, and at the basal side gives off a short tongue-like process”; right dorsal lobe narrow and elongate, the left in two distinct portions. In the genitalia a moderately long cylindrical blunt kale-sac is given off at the junction of the vas deferens, and the caecum of the penis, to which the retractor muscle is attached, is sharply coiled. The dart-sac is long, the spermatheca short and elongately pearshaped. The radula contains about 88 rows of teeth, with the arrangement: 34 . 2 . 9 . 1 . 9 . 2 . 34 (45 . 1 . 45).” (Blanford & Godwin-Austen, 1908)
Macrochlamys indica – “Major diam. 18½, min. 16, height 8½ mm.” (Blanford & Godwin-Austen, 1908)
Other localities – “Lower Bengal, common at Calcutta” (Blanford & Godwin-Austen, 1908)