from the Provi?ice of Tavoy. 453 



species. This is a very extraordinary proportion of new shells 

 to be obtained from any part of the world, at the present 

 day. In the present paper, I propose to confine myself to 

 some of the land shells which I regard as new ; reserving the 

 fresh water species for another occasion. 



HELIX PROCUMBE.NS. 



Plate XXIV. Fig 1. 



Testa discoidea,, supra planulata, subtus convexa, epidermide pallida cornea, late 

 umbilicata ; anfr. qualuor, ulliino deflecto ; apertura rctundata, labro reflexo, albo. 



Description. 



Shell depressed, discoidal, flat above, passing off* below, 

 from the periphery, by a convex slope, to the rounded verge 

 of a broad, profound umbilicus, which distinctly exhibits all 

 the whorls within ; whorls four, the outer one deflected, so 

 that the commencement of the lip is more than half way 

 down towards the umbilicus ; aperture rounded, rather wider 

 than high ; lip white, reflected, not flattened, the two extrem- 

 ities nearly continuous ; surface slightly wrinkled, covered 

 with a pale yellowish horn-colored epidermis. 



Diameter | of an inch ; height { of an inch. 



Belongs to the group of which H. planulata is the type. 



HELIX INFRENDENS. 



Plate XXIV. Fig 6. 



T. orbiculata, depresso-conoidea, comeo-virescente, subcarinata, supra rugose 

 striata, infra glabra, nitida, regione umbilicali indentata ; anfr. 7 convexis, sulura 

 impressa ; apertura coarctata, labro vix reflexo, deutibus tribus pliciformibus 

 instructa. 



Description. 



Shell small, orbicular, depressed-conical, of a greenish 

 horn color ; spire slightly elevated, composed of about seven 

 convex, compact whorls, elegantly marked above by promi- 

 nent, equal, and equidistant radiating striae, which gradually 

 disappear, till, beneath, it is quite smooth and shining ; the 

 periphery is slightly carinated ; the under side is convex, but 

 sinks, at the umbilical region, into a deep pit. The aperture 



