168 ZONITID^E. 



260. Oxytes shanensis, Godwin-Austen, Mol. 2nd. i, 1883, p. 128. 

 Helix blanfordi, Th. J. A. S. B. 1865, p. 275, nee 1859, p. 308; 



id. Cat. p. 22. 



This may be a variety of 0. oxytes, from which it is distinguished 

 by being more compressed and lenticular, and therefore more 

 sharply keeled, the umbilicus is slightly smaller and the sculpture 

 finer. Only immature specimens are known ; one of these 

 measures : major diam. 28, min. 23|, height 10 mm. 



Hab. Shan States, on Upper Sal win River (Fedden). 



261. Oxytes cycloplax, Bs. (Helix) A. M. N. H. (2) x, 1852, p. 34; 



Pfr. Mon. Hel iv, 1859, p. 181 ; H. $ T. C. 1. 1876, pi. 26," fig. 7 ; 

 Nev. Hand-L i, 1878, p. 48 ; Godwin-Austen, Mol 2nd. i, 1883, 

 p. 125, pi. 31, figs. 1-8. 



This is very nearly allied to 0. oxytes ; but it is smaller, less 

 sharply keeled, with the keel becoming blunt and obsolete near the 

 mouth ; the spire is lower, the apex less pointed, the lower surface 

 more tumid, and the umbilicus wider. As a rule, the sculpture 

 consists of fine, rather flexuous, oblique striae, decussated by 

 impressed spiral lines ; but there is some variation in both the 

 present species and in 0. oxytes. Colour brownish yellow, with a 

 narrow rufous band round the last whorl just below the keel. 



Major diam. 38, min. 32|, height 15 mm. 



Hab. Sikhim, 1000-5000'. 



B. Narrowly umbilicated; umbilicus about 2 mm. across. 



262. Oxytes blanfordi, Theobald (Helix), J. A. S. B. xxviii. 1859, 



p. 308 ; Pfr. Mon. Hel. v, 1868, p. 249 ;H.$T. C. I. 1876, pi. 60, 

 tigs. 1, 2,' 3 ; Godwin- Austen, J. A. S. B. 1882, 2, p. 69, pi. 5, fig. 1 

 (animal) ; id. Mol. 2nd. i, 1883, p. 128. 



Shell lenticular, sharply keeled, thin, dull chestnut, finely striated, 

 with a minute reticulated sculpture under the microscope ; spire 

 low,, conical ; whorls 5|, flattened, the last much compressed near 

 the keel, slightly convex beneath; aperture oblique, angulately 

 lunate ; peristome very thin. 



Major diam. 27, min. 24, height 10 mm. 



Hab. Kursiong, Sikhim, about 3000' above the sea. 



The animal is shown in Stoliczka's drawing, figured by Godwin- 

 Austen, I. c., to have a small but distinct lobe above the mucous 

 pore. 



C. Perforate. 



263. Oxytes castor, Tkeob. (Helix) J. A. S. B. xxvii, 1858, p. 319; 



xxviii, 1859, p. 308 ; //. $ T. C. 2. 1876, pi. 26, figs. 3, 6 ; Godwin- 

 Austen, Mol. 2nd. i, 1883, p. 126. 



Nanina cherraensis, Blf. J. A. S. B. 1870, p. 14, pi. 3, fig. 8 ; Pfr. 

 Mon. Hel. vii, 1876, p. 131. 



Shell lenticular, sharply keeled, thin, smooth, finely striated, 



