90 Contributions to Indian Malacology . [No. 2, 



form. It is usually smaller than tapeina or rotatoria, and may gener- 

 ally be recognised by its blunt periphery and the convexity both of 

 the spire and base. Still, forms of H. tapeina approach it so closely 

 that they may be said to pass into it. I found specimens of H. Huttoni 

 in only one spot in Burma, viz. on Puppa hill, an isolated peak, 

 nearly 5,000 feet high, in Upper Burma. The occurrence of a Hima- 

 layan shell which is found as high as 6,000 and 7,000 feet in Sikkim, 

 upon this solitary hill, where it is accompanied by peculiar species, as 

 Alycceus Yitlcani, W. Blanf. and Diplommatina Puppensis, W. Blanf., 

 and with a flora comprising plants, such as Pteris aquilina, belonging 

 to a temperate climate, is very remarkable ; especially as the same 

 species was found by myself on the Nilgiri hills of Southern India, at 

 an elevation of above 6,000 feet, and by Mr. F. Layarcl on the moun- 

 tains of Ceylon. It is found both in the eastern and western Hima 

 lay as, and has probably once enjoyed a far more general range in India 

 than at present. Its occurrence, with so little variation, in isolated 

 situations, is in favour of its being a distinct and natural species, a 

 rank to which, morphologically considered, its claims are small. 



At Mya Leit Doung, the high limestone peak 15 miles south-east 

 of Amarapoora, already referred to, and the locality whence Gyclopho- 

 rus cryptonvphalus, Bens., G. hispklulws, W. Blanf., Diplommatina 

 exilis, W. Blanf., Georissa frustrillum, Bens, sp., Hypselostoma Benso- 

 nianum, W. Blanf., Helix perarcta, W. Blanf., and other peculiar 

 species have been obtained, I found Mr. Theobald's Helix Phayrei, 

 which appears to have some claims to be considered a distinct species. 

 Mr. Theobald's description (J. A. S. B., 1859, Vol. XXVIII. p. 306) 

 is very imperfect, and the following may serve to give a better idea of 

 the shell. 



H. Phayrei, Theobald. 



Shell moderately umbilicated, orbiculately conoid, rather solid, 

 white, with a horny shining epidermis ; obliquely, coarsely and flex- 

 uously plicately striated beneath the epidermis, bluntly angulate at 

 the periphery. Spire depressly conoid ; apex obtuse ; suture scarcely 

 impressed. Whorls 6, slightly convex, slowly increasing ; the last 

 descending towards the aperture, where the angulation of the peri- 

 phery dies out ; convex beneath, compressed around the deep umbili- 

 cus, which exposes all the whorls. Aperture subcircularly lunate, 

 diagonal : peristome white, slightly expanded throughout ; margins 



