JOURNAL 



OF THE 



ASIATIC SOCIETY OF BENGAL, 



Part II.— NATURAL SCIENCE, 

 No. IV.— 1886. 



XVI. — The Landshells of FeraJc. — By O. F. von Mollendorff, Ph. D. 

 Communicated by the Natural History Secretary. 



[Keceived September 18th. ; — Eead November 3rd, 1886.] 



The following notes are based on a collection made by Deputy 

 Surgeon- General R. Hungerford during a short visit to Perak, and on a 

 number of shells received by the Indian Museum from Larut. I have 

 thought it advisable to combine with the description of these a list of 

 all species hitherto known from Perak. So far as I know, only the 

 following papers have been published on the subject : — 



H. Crosse, Mollusques nouveaux de Perak. J. de Conch., xxvii, 

 1879, pp. 198—208 (5 sp.). 



H. Crosse, Faune malacologique de Perak. Ibid., pp. 336 — 340 

 (18 sp.). 



H. H. Godwin- Austen and G. Nevill, Shells from Perak (and the 

 Nicobar Islands). Proc. Zool. Soc. Lond., 1879, pp. 734—740 (9 sp.). 



J. de Morgan, Note sur quelques especes nouvelles de mollusques 

 terrestres recueillis dans la Peninsule Malaise. Le Naturaliste, vii, 

 1885, No. 9, pp. 68—70 (16 sp.). 



STREPTAXID^. 



1. Streptaxis PLUSsjiNSis, de Morgan. 



de Morgan, Le Natur., vii, 1885, No. 9, p. 68. 



" Heliciform, of whitish colour, spire regular, very flat, base ven- 

 trose, smooth, upper side transversely striate. Umbilicus very wide, 

 39 



