194 Mr. W. H. Benson on new Land-Shells. 
uscula ; anfractibus 4, valde convexis, ultimo spiram subsequante ; 
apertura vix obliqua, semicirculari, superne et ad latus sinistrum 
angulata, peristomate tenui, margine parietali calloso, intus recto, 
stricto ; loco umbilicali subfoveato. Opere. 
Long. 2; diam. 13 mill. p 
Habitat prope Moulmein, ad cavernas “ Farm Caves’’ dictas. 
Named in compliment to Dr. Rawes, to whose kind assistance 
in collecting at the locality mentioned I am much indebted. A 
single specimen occurred to me, with the curious little genus 
Clostophis, in a decayed specimen of Sophina taken by Major 
R. H. Sankey during the rainy season of 1859. The shell is 
more globose than that of H. Pyzis, B., and the sculpture is 
altogether different. In the formation of the aperture there is 
an approach to that of H. Frustrillum, but it exhibits a straight 
knife-like edge at the internal parietal margin. The discovery 
of this species increases the number of Burmese Hydrocene to 
four, two of which belong to the region of the lrawadi River, 
and two to the province of Tenasserim. 
11. Helicina Andamanica, B. 
Testa sublenticulari, solidiuscula, striis confertissimis sub lente de- 
cussata, rugis spiralibus obsoletis, subtus magis conspicuis, munita, 
albida, superficie citrina, linea peripherica rubente suturam se- 
quente ornata; spira convexo-conoidea, apice obsolete mucronato, 
sutura lineari, marginata; anfractibus 43 planulatis, ultimo acute 
compresso-carinato, subtus convexiusculo ; apertura obliqua, tri- 
angulari, albida, peristomate acuto, expansiusculo, margine colu- 
mellari brevi, sinuato, callum subcircularem emittente, calli basi — 
elevatiore, versus marginem aperturze obtuse angulata. Operculo 
tenui, albido, medio obsolete granulato, intus lutescente. 
Diam. major 9, minor 73, axis 5 mill. 
Habitat in Insulis Andamanicis. 
A larger species than H. Nicobarica, Philippi, to which it is 
related. Some characters exhibit a tendency towards H. Mer- 
guiensis, Pfr. The single specimen received from Mr. Theobald 
is considerably weathered ; and it is possible, from certain ap- 
pearances, that the spiral rugze may be less prominent in a per- 
fect specimen, and that they have become more developed by 
the decay of the surface. In this specimen the coloured band 
is to be discovered only on close inspection, and a very minute 
portion remains of the shining decussated surface. The state 
of the callus does not permit of its description either as smooth 
or granulate. 
A small variety of Cyclophorus speciosus, Ph., the habitat of 
which was unknown to its describer, is stated by Haines to 
occur in Siam. The typical shell was found in Pegu by Capt. 
