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



7. Helioe vilipensa, nobis. 



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

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

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

 tundato, subtus convexiusculo ; apertura late lunata, subobliqua, 

 peristomate recto, acuto, margine columellari oblique descendente, 

 expansiusculo, superne breviter reflexo ; umbilico pervio. 



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



Hab. ad rupem Mehintali. 



A little Naninseform Helix with no very prominent character, 

 dififering from Pfeiffer's H. Perroteti and other small Helices of 

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

 shell which is slightly larger, but othei-wise 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, tiltimo rotundato, sub- 

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

 margine columellari verticali, leviter reflexo, umbilico non pervio. 



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



Hab. in pago GaUensi, inter saxa. 



Remarkable for its deep clear purple-brown colour. 



9. Vitrina Edgariana, nobis. 



Testa valde depressa, tenuissima, subtus membranacea, politissima, 

 pellucida, superne obsolete oblique striatula, lineis nomiuUis spira- 

 libus impressis omata, lutescente-cornea ; spira planiuscula, apice 

 prominulo, sutura impressa ; anfractibus 3 celeriter accrescentibus, 

 planiusculis, ultimo ad periphseriam 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 moUusk is very long and 

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

 ofi" 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 fresh rt^ater shell, Planorbis rotula, nobis. 



10. Vitrina membranacea, nobis. 

 Testa valde depressa, submembranacea, obsolete oblique striatala. 



