﻿PULMONATA. 



333 



Var. A. Testa majore striis transversis numerosioribus. 

 „ B. Testa striis transversis distantioribus obsoletis ; longitudinalibus subnullis. 

 „ C. Testa laevigata ; labro incrassato. 

 „ D. Testa tribus lineis rufls pictd. 



„ E. Testa angustiore clathratd, striis transversis distantioribus et longitudinalibus 

 raris ; labro rejlexo, rare marginato. 



M. Deshayes has given the figure of an operculum of what he considered might 

 belong to this species, but as it was not found in position this is uncertain. The apex of 

 this shell is generally broken in the French specimens, but this probably is accidental ; 

 my figures 2 b, d are from a specimen in Mr. Edwards' Cabinet, which have the 

 volutions slightly convex ; figures 2 a, c are made from a fragment in my own cabinet, 

 with more flattened volutions, and the shell of it appears to have been more cylindrical 

 than Cy. mumia. This fragment has upon it a few broad spiral striae, and I thought 

 possibly it might be the cast of some species of Cylindrella, a genus not uncommon on 

 the western side of the Atlantic, and for this reason I had it represented, but I now 

 believe it to be only a variety of C. mumia, although the cast of a shell represents the 

 volutions as more convex than would the shell itself; the matrix only rilling the cavity 

 after the absence of the animal. 



Genus 29///.— Callia. Gray, 1840. 



This genus appears to have been proposed in the year 1840 for a group of the 

 Family Cyclophoridse by Dr. J. E. Gray, when he gave an undescribed species as the 

 type, and it forms another division of a large group of shells once united under the name of 

 Cyclostoma. Since then Chenu (p. 490) has thus described the genus: — " Coquille pupiforme, 

 couverte d'un enduit lisse, brillant. Overture arrondie, unpeu device, peristome mince oper- 

 cule mince, membraneux, a tours etroits. C. lubrica, Sowerby, f. 3631-2." Callia is closely 

 united to Pupina, differing from it in not having an open canal at the base of the aperture, 

 which characterises the former genus ; and as our shell seems destitute of this canal, I 

 have thought it best to give the only species of this group known to me from the British 

 Eocenes under this generic name, because it has been previously adopted for it, without 

 expressing any opinion of my own as to the propriety of the generic division of the group. 



No. 255. Callia (?) l^vis, F. E. Edwards, MS. Tab. XXXIV, fig. 3 a-c. 



Pupina ? l^svis, F. Edwards, MS. 



Callia? — Sundb. Land- und Siissw.-Conch., p. 298, taf. xvii, fig. 13, 1872. 



