OXITES. 169 



decussated by minute, spiral, impressed lines above and below, 

 light ferruginous brown; spire low, conical, apex acute; whorls 

 5J-6, regularly increasing, flattened above, the last compressed at 

 the keel, slightly convex beneath ; aperture oblique, angularly 

 lunate ; peristome thin, the basal margin slightly arcuate. 



Major diam. 35, min. 33, height 15 mm. 



Hob. Khasi Hills ; Cherra Punji, Nongklao, Nongkulong, and 

 Eastern Garo Hills. 



264. Oxytes pollux, Theob. (Helix) xxvii, 1858, p. 319; Blf. J. A. S. B. 



xxxix, 1870, p. 13 ; Pfr. Mon. Hel vii, 1876, p. 132 ; H. . fy T. 

 C. I. 1876, pi. 26, figs. 2, 5 ; Godwin- Austen, J. A. S. B. 1880, 

 p. 158, pi. 11, fig. 4 (animal) ; id. Mol. Ind. i, 1883, p. 127. 



Similar to 0. castor except in colour, which is pale horny with a 

 lower spire and less marked spiral sculpture. 



Major diam. 35|, min. 32, height 13 mm. 



Hob. Khasi Hills ; Teria Ghat, Nongkulong ; Habiang Garo 

 Hills (Theobald and Godluin-Austen). 



The animal is pale yellowish ochre. Eye-tentacles thick and 

 close together at the base and long. A small lobe above the 

 mucous pore. Eadula similar to those of 0. cycloplax and 0. orobia, 

 outer lateral teeth rather longer and more numerous. 



As Godwin-Austen has pointed out, this is probably only a 

 colour-variety of 0. castor. 



265. Oxytes sylvicola, Blf. J. A. S. B. 1880, p. 185 ; Godwin-Austen, 



Mol Ind. i, 1883, p. 130. 



Shell depressed, carinate, not very thin, covered with a thick 

 yellowish-brown epidermis, decussated with oblique striation and 

 spiral impressed lines ; spire low, conoid ; whorls 5 j, nearly flat, 

 the last moderately swollen beneath, but slightly compressed near 

 the keel ; aperture oblique, angularly lunate ; peristome acute, 

 slightly thickened inside. 



Major diam. 32, min. 29, height 17 mm. 



Hob. Burail Eange, North Cachar, and Anghami Naga Hills. 



II. Periphery rounded, not carinate. 



266. Oxytes orobia, Bs. (Helix) A. M. N. H. (2) ii, 1848, p. 158: 



Pfr. Mon. Hel. iii, 1853, p. 117 ; vii, 1876, p. 220 ; H. $ T. C.I. 

 1876, pi. 28, fig. 8 ; Nev. Hand-l i, 1878, p. 48 ; Godwin-Austen, 

 J. A. 8. B. 1880, p. 157, pi. 11, figs. 1, 1 a ; id. Mol. Ind. i, 1883, 

 p. 129, pi. 30, fig. 4, pi. 32, figs. 1-5 (anatomy). 



Shell perforate, depressedly globose, smooth, striated, decussated 

 by fine, close, concentric, impressed lines, white, covered with a 

 thick, yellowish, horny epidermis, encircled by a narrow dark 

 rufous band below the periphery ; spire depressed, convex ; 

 whorls 5-5|, slightly convex, the last rounded, sometimes suban- 

 gulate at the periphery, swollen beneath ; aperture ovally lunate ; 



