194 Mr. W. H. Benson on new Land- Shells. 



uscula ; anfractibus 4, valde convexis, ultimo spiram subaequante ; 

 apertura vix obliqua, semicirculari, superne et ad latus sinistrum 

 angulata, peristomate tenui, margine parietali calloso, intus recto, 

 stricto ; loco umbilicali subfoveato. Operc. . ? 



Long. 2; diam. 1| mill. 



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 

 C/ostophiSj 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. Pyxis, 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 Hydrocence to 

 four, two of which belong to the region of the Irawadi River, 

 and two to the province of Tenasserim. 



11. Helicina Andamanica, B. 



Testa sublenticular!, solidiuscula, striis confertissimis sub lente de- 

 cussata, rugis spiralibus obsoletis, subtus magis conspicuis, munita, 

 albida, superficie citrina, linea peripherics rubente suturam se- 

 quente ornata ; spira convexo-conoidea, apice obsolete mucronato, 

 sutura lineari, marginata ; anfractibus 4| 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 aperturae obtuse angulata. Operculo 

 tenui, albido, medio obsolete granulato, intus lutescente. 



Diam. major 9, minor 7|, 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 rugse 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. 



