122 Clmsan Shells. [No. 2, 



Helix tapeina, Benson. 



Journ. Asiatic Socy. Vol. 5, p. 352, No. 7. This shell was origi- 

 nally described with a collection from the N. E. Frontier of Bengal, 

 in which Chinese forms began to mix with those of our eastern pro- 

 vinces. 



" Only two specimens, which occurred on the stem of Salisburia 

 genho, were found, at sunrise. The Chinese had no name for the 

 snail, and were evidently not acquainted with it, from which it 

 would appear not to be common." 



Helix naintnoides, Benson. 



Testa, solidiuscula, subdiscoidea, superne radiatim, tenuiter striata, 

 infra striis lsevigatis, distantibus. Spira depresso-conoidea, apice 

 obtusato, planulato ; apertura transverse lunata, labro obtuso crasso, 

 infra subreflexo. 



This shell is nearly related to, and is probably one of the terminal 

 species. The want of gloss, observable above, shews that it is not 

 endued with the lubricating processes which exist on the mantle of 

 N. vitrinoides. The under side is somewhat polished. 



Dr. Cantor found three shells at different times lying on the 

 ground in his garden at Ting-hae, but never saw it alive, nor did 

 the Chinese know it. It is common at Singapore and Pinang. 



Clatjsilia pltjviatilis, Benson. 



Testa fusiforme pallide olivacea, spira attenuata, crystallina apice 

 papillari ; anfractibus 14, medianis ventricosioribus, omnibus leviter 

 transverse striatis. Peristomate valde reflexo planato, ad basin 

 labii plica obliqua, solida, sulcoque concurrente munito. 



Axis 1. 1 poll. 



This beautiful shell, which is much larger and more narrow in 

 the upper whorls than C. loxostoma of our N. E. Frontier, is dis- 

 tinguished by the curious canal which cuts obliquely through the 

 reflected peristome at the base of the inner lip, and which is margin- 

 ed above by an incrassated prolongation of the lowermost internal 

 plica. The peristome is as broadly and suddenly reflected, as in the 

 Maltese CI. lahiosa. In form, it approaches the Dalmatian species 

 CI. Icevigata, but it is more ventricose in the lower whorls, and more 

 attenuated in the upper. The delicacy of the oblique striae imparts 



