86 Contributions to Indian Malacology. [No. 2, 



with a darker red band in the centre of the whorls above, and another 

 on the last whorl, just below the periphery ; apex yellow. Spire con- 

 vexly conoid ; apex acute. Whorls 4, the last compressed and sharply 

 keeled, moderately convex at the base, furnished with a polished sub- 

 granulate central callus; columella very short. Aperture diagonal, 

 triangular ; peristome white, slightly expanded. Operculum light 

 grey, shelly. 



Millem. inch. 



Major diameter, 6 0.24 



Minor, 5 0.2 



Axis, 3| 0.15 



Habitat — Ramri Island, coast of Arakan. Rare. 



A smaller variety, measuring — major diameter 5, minor 4^, axis 3 

 millem., was abundant in the southern portion of the Bassein district. 



Near H. Merguiensis, Pfr. and H. Andamanica, Bens., but smaller 

 than either. It is mainly distinguished from the former by the 

 absence of the close spiral striation, so marked in that species, and 

 from the latter by different colouring, higher spire and closer sculpture. 



The preceding pages contain descriptions of the greater portion of 

 the previously unpublished species of land shells in my collections 

 from Ava, Pegu, and Arakan ; I have still a few remaining, the dis- 

 tinctness of which is probable, but they belong, for the most part, to 

 critical groups, and require comparison with the original types of 

 species, described by Mr. Benson and others. The following addition- 

 al notes, on the distribution of previously described species, may serve 

 to supplement the papers on the subject, by Mr. Theobald, in Jour. 

 As. Soc. Bengal, Vol. XXVI. p. 245, and Vol. XXVII. p. 313. 



Nanina. 

 Nanina petasus, Bens., is common about Thayet Myo and in the 

 Arakan hilLs. My largest specimen measures 12 millemetres by 11 

 in its two diameters. A smaller, closely allied shell, measuring 8 by 7 

 millem., I was inclined to refer to Mr. Benson's Helix aspides, on 

 account of the arcuate and labiate basal margin of the aperture, but 

 I learn from the describer that it presents differences, although not 

 sufficient to prove it a distinct species. A third still smaller form, 

 with the thickening and curvature of the peristome exaggerated, and 



