Mollusca : testacellidæ and zonitidæ / by W.T. Blanford and H.H. Godwin-Austen.

  • William Thomas Blanford
Date:
1908
Catalogue details

Licence: In copyright

Credit: Mollusca : testacellidæ and zonitidæ / by W.T. Blanford and H.H. Godwin-Austen. Source: Wellcome Collection.

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    bluntly subangulate beneath, ascending in front; aperture vertical, with a slight columellar callosity, but no plait, the accessory tubular portion almost halfway down the right margin ; peristome broadly expanded. Length 5|, breadth 2, length of aperture and peristome nearly 2 mm. Hab. Khasi Hills; Jaintia and N. Cachar Hills (G.-A.). 32. Ennea stenopylis, Bs. A. M. N. H. (3) v, 1860, p. 460; Pfr- Mon. Hel. v, 1868, p. 455 ; G.-A. P. Z. S. 1872, pi. 30, fig. 5 ; Pfr. t. c. vii, 1876, p. 501; Nev. Hcind-l. i, 1878, p. 7. Shell ovate, somewhat flexuously and obliquely costulate, whitish horny ; apex obtuse; whorls 6j, narrow, slightly convex, ante- penultimate broadest, last whorl much compressed laterally, in- dented externally behind the peristome ; aperture vertical, no columellar plait. Length 3|, breadth 2|, height ap. 1-J- mm.; in another specimen length 3|, breadth 2 mm. Benson’s type was 3J and 1-J, showing much variation. Hab. Sikhim, about 4000'; Dafla Hills, Khasi Hills, Naga Hills; Manipur (G.-A.). 33. Ennea nagaensis, Blf. {Godwin-Austen MS.) P. Z. S. 1899, p. 769, pi. 50, fig. 22. Near E. stenopylis, but larger and more elongate, with 7 whorls ; and with the broadly expanded peristome of E. vara. Costulation fine, close, oblique, and flexuous. Length 4|, breadth 2, height of aperture 1| mm. Hab. Naga Hills. 34. Ennea blanfordiana, G.-A. P. Z. S. 1872, p. 515, pi. 30, fig. 4; Pfr. Mon. Hel. vii, 1876, p. 501 ; H. $ T. C. I. 1876, pi. 100, fig. 2. Shell cylindrically ovate, obliquely costulate on upper whorls, almost smooth and polished on the lower, whitish horny, trans- lucent, spire with nearly straight lines, becoming curved near apex, which is obtuse; whorls 84, the last two or three some- times slightly narrower across the shell than fifth and sixth, the last compressed laterally, indented on outer side behind peristome; aperture vertical, with the subtubular accessory portion higher up the right margin than in E. stenopylis and E. vara, a small tubercle inside dextral margin on the palatal fold, and a deep- seated columellar fold. Length 7, breadth 2J, length of aperture with peristome 11-2 mm. Hab. North Cachar, Mahadeo Peak near Asalu, 5700'. A smaller variety, measuring 5|mm. in length, was found at Hemeo Peak in the same district. c
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