. Moluska ... rms de l'est de l'Himalaya, Assam, et la Birmanie. 318. Durgella lévicula, BS. (Helix) A. M. N. H. (3) iii, 1859, p. 391; BLF. A. M. N. m (3) xi, 1863, p. 81; ID (Nanina) J. A. 8. B.1865 du 2, p. 87 ; PFR. (Helix) Mon. Hel. v, 1868, p. 48; H. ^ T.(Helix) C. I. 1876, pi. 90, ligs. 1,4; Godvnn-Auxten, Jour. SOC ligne, Zool. XV, 1881, p. 291 (anatomie) ; Nevill (Nanina), Sand-l.i, 1878, p. 26 ; Godioin-Austen, mol. I, 1883, p. 142 ; ID. T. c.ii, 1898, p. 61, pi. 76, fig. 1-6 (anatomie). Enveloppe sous-perforée ou très étroitement .perforate, globosely de- 214 ZONITIDiE. Pressée, mince, presque sm

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. Mollusca ... rms from Eastern Himalaya, Assam, and Burma. 318. Durgella levicula, Bs. (Helix) A. M. N. H. (3) iii, 1859, p. 391;Blf. A. M. N. m (3) xi, 1863, p. 81; id. (Nanina) J. A. 8. B.1865, 2, p. 87 ; Pfr. (Helix) Mon. Hel. v, 1868, p. 48; H. ^ T.(Helix) C. I. 1876, pi. 90, ligs. 1, 4; Godvnn-Auxten, Jour. Linn.Soc, Zool. XV, 1881, p. 291 (anatomy) ; Nevill (Nanina), Sand-l.i, 1878, p. 26 ; Godioin-Austen, Mol. Ind. i, 1883, p. 142 ; id. t. c.ii, 1898, p. 61, pi. 76, figs. 1-6 (anatomy). Shell subperforate or very narrowly .perforate, globosely de- 214 ZONITIDiE. pressed, thin, almost smooth, more or less polished, translucent, whitish homy, in some cases faintly striated with subohsolete spirallines; spire convex, apex obtuse, suture impressed; whorls 3^, rapidly increasing, the last rounded at periphery, moderatelytumid beneath; aperture oblique, large, roundly lunate ; peristomethin, slightly arcuate above, columellar margin subvertical, slightlyreflected. Major diam. 8j, min. 7, height 5 mm.. [Fig. 75.—DurgcUa kvicvla. A. Animal, view of right side. From a spirit-specimen. B. Ditto, left side. Ditto, much enlai-ged. C. Extremity of foot and lobe above mucous gland, as in life. D. Jaw, X 3, and teeth of radula, the centre and admedian. E. The generative organs. X 6. F. Shell, with sutural spiral. X 3.] Hah. Tenasserim; Phie Than, Methan at base of Mule-itEange, &c. This or closely allied forms are found in Pegu, also Balasore Hills, Orissa (W. T. B.); Golconda in North-eastern Madras (Beddonie). Animal pale ochre, with a dusky line on the upper part of the BUEGBLLA. 215 extremity of the foot, also on the neck, tentacles moderatelylong. Mantle-lobes moderately developed. Spermatheca thick, short, and wide at the base, with a swollen wide terminal portion.Dart-sac large, cylindrical, but twisted in form. The vas deferensjoins the male organ close to the retractor muscle; withoutkale-sac. The teeth in the radula exceed 170 .1 . 170: the rhachidian toothis very m

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