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*diametér, “sie 6 0.24 
Binor eect .cs. ee ee es 5 0.2 
NGS, Oe Ue: Me: 34 0.15 
Habitat—Ramri Island, coast of Arakan. Rare. 
A smaller variety, measuring—major diameter 5, minor 44, axis 3 
millem., was abundant in the southern portion of the Bassein district. 
Near H. Merguwiensis, Pir. 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the previously unpublished species of land shells in my collections 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. XXVILI. p. 313. 
Nanina. 
Nanna petasus, Bens., is common about Thayet Myo and in the 
Avakan 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 
T 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 

