1865.] Contributions to Indian Malacology. 77 
roundly lunate, almost circular; peristome thin; margins distant, 
columellar slightly expanded. 
Millem. inch. 
Major diameter,......... Maviaii 4 0.16 
Minor dittoy cis cvisieees.cres vee 3F 0.15 
PSUS i farsi ase fa oa sisaw nen’ a siilse 3 0.12 
Habitat—Arakan hills: rare. 
A prettily marked little species near H. Bascauda, Bens., from 
which it is distinguished by its finer and closer sculpture, more open 
umbilicus, and less conical spire. It is very probably a Nanina, but 
the animal was not met with. 
Genus BULIMUS. 
16. B. scrostcunatus, n. sp. 
Shell subobtectly perforated, turritedly ovate, thin, horny, yellowish 
white, marked with vertical, subarcuate, rather irregular, closely set, 
raised lines. Spire turrited, apex obtuse, suture simple, impressed. 
Whorls 6, convex, the last rounded beneath. Aperture vertical, 
truncately ovate: peristome simple, thin; right margin considerably 
curved forwards ; columellar vertical, curving to the left near the base, 
frequently straight, rather broadly reflexed. 
Millem. inch. 
PRM re Ae du ahawacee deter cas t 0.28 
BICC eas a celoncined ven a ce 3h 0.14 
Length of aperture, +..........: 34 0.14 
Habitat—Pegu, west of the Irawady. 
The nearest ally of this species is its congener B. putus, Bens., 
which inhabits the same localities, and differs in its greater tumidity 
and less marked sculpture. There is, however, much variation in the 
first named character, and despite the great difference between the two 
forms in general, there is some appearance of a passage. T'wo speci- 
mens of B. putus which I possess, measuring respectively 7 and 84 
millem. in length, are both 5 millem. in diameter. 
Both these species shew a tendency to a passage to Spirawis, 
17. B. pricier, n. sp. 
Shell obtectly perforated, ovately conical, rather thin, horny, finely 
striated. Spire conical, apex obtuse ; suture marginate, scarcely 
ay 
