Mr. W. H. Benson on new Land Shells from Ceylon. 93 



7. Helix vilipensa, nobis. 



Testa aperte perforata, pervia, depressa, solidiuscula, pellucida, cor- 

 nea, polita ; spira convexiuscula, sutura vix xnarginata, apice ob- 

 tuso ; anfractibus 5, subplanatis, lente accrescentibus, ultimo ro- 

 tundato, subtus convexiusculo ; apertura late lunata, subobliqua, 

 peristomate recto, acuto, margine columellari oblique descendeute, 

 expansiusculo, supeme bre^•iter reflexo ; umbilico pervio. 



Diam. major 8, minor 7, axis 4 mill. 



Hab. ad rupem Mehintali. 



A little Naninseform Helix with no very prominent character, 

 differing from Pfeiffer's H. Peiroteti and other small Helices of 

 the same group, with the exception of a small unnamed Nilgherry 

 shell which is slightly larger, but otherwise not easily to be di- 

 stinguished from it. From H. Perroteti it differs by its more 

 convex spire, rounder periphery, and more open perforation. 



8. Helix perfucata, nobis. 



Testa vix perforata, depressa, translucente, purpureo-fusca, politis- 

 sima, spira elevatiuscula, sutura submarginata, apice obtuso ; an- 

 fractibus 4, convexiusculis, arete convolutis, ultimo rotundato, sub- 

 tus convexo ; apertura lunata, vix obliqua ; peristomate recto, acuto, 

 margiue columellari verticali, leviter reflexo, umbilico non pervio. 



Diam. major 5, minor 4, axis 3 mill. 



Hab. in pago Gallensi, inter saxa. 



Remarkable for its deep cleai' purple-brown colour. 



9. Vitrina Edgariana, nobis. 



Testa valde depressa, tenuissima, subtus membranacea, politisstma, 

 pellucida, superne obsolete oblique striatula, lineis nonnuUis spira- 

 libus impressis ornata, lutescente-coniea ; spira planiuscula, apice 

 prominulo, sutura impressa ; anfractibus 3 celeriter accrescentibus, 

 planiusculis, ultimo ad periphaeriam valde convexo ; apertura ob- 

 liqua, ovato-lunata. 



Diam. major 10, minor 8, alt. 4 mill. 



Hab. ad Columbo, Hangwelle, et Ratnapoora, insuper folia arbus- 

 torum. 



Mr. E, Layard remarks, that " the mollusk is very long and 

 attenuated, yellow and white. On touching it, it throws itself 

 off the spot where it crawls, and twists and springs about in a 

 most singular manner, often propelling itself several inches from 

 its starting-point." I have recorded elsewhere a similar habit in 

 a little freshwater shell, Planorbis rotvJa, nobis. 



10. Vitrina membranacea, nobis. 

 Testa valde depressa, submembranacea, obsolete oblique striatula, 



