
1865. ] Contributions to Indian Malacology. 87 
a somewhat flatter spire, measures only 5 to 5} millem. in its largest 
diameter, and may be a distinct shell. It, also, is from the Arakan 
hills. 
Nanina honesta, Gould, originally described from Tavoy, is found 
throughout western Pegu and Arakan, as well as at Molmein, where 
it was collected by Mr. Theobald. Dr. Gould’s description is very 
imperfect ; he does not even note the great obliquity of the mouth, 
which is the most striking character of the species. In the Arakan 
hills near Prome, and about Thayet Myo, a larger variety occurs, in 
which the angulation of the periphery entirely disappears in the adult, 
although the other characters are the same. The sutural margination 
is sometimes, though rarely, obsolete. Large specimens measure 14 
by 114 millem., and about 7 in height. 
N. levicula, Bens., also first found by Mr. Theobald in the Tenas- 
serim provinces, is very common about Thayet Myo, Prome, and 
Akoutoung, and occurs also as far south as the Bassein district. It is 
frequently whitish in colour, It is allied to N. honesta, but easily 
distinguished, besides by its smaller size, by the fewer whorls and their 
more rapid rate of increase, and also by the total absence of sculpture, 
There is much variation in size : my largest specimen measures 8} and 
7 millem. in its two diameters. The animal has a very small lobe 
above the mucus pore in the tail, which is truncated. The mantle is 
rather large. A single specimen of a shell, apparently identical, was 
found by me, some years ago, near Balasore in Orissa. 
N. textrina was evidently described by Mr. Benson, (in the Annals 
and Mag. Nat. Hist. 1856, Ser. 2, Vol. XVIII. p. 252,) from an 
immature specimen. When adult, the peristome is white and slightly 
thickened within, and the body whorl internally of a milky white 
colour. This handsome species is found west of the Irawady, from 
Thayet Myo to Bassein, and varies considerably in size, in the height 
of the spire, and in the degree of angulation above the periphery, 
The greatest change takes place in the latter character ; specimens 
from the district of Bassein being sharply angled, and even subcarinate, 
the angulation diminishing, however, close to the aperture; while, in 
specimens from Thayet Myo and Prome, the periphery is round. In 
height of spire, the shell varies from depressed to subturbinate ; in 
two specimens before me, one has a major diameter of 30 millem., and 
height of 13 ; the other with a major diameter of only 27, measures 
