Zoological Society. 73 



culari ; peristomate simplice, marginihus cojivergentibus, columel- 



lari subrecedente, leviter arcuato. 

 Diam. 24, alt it. 12 mill. 

 From Abyssinia ; collected by Dr. Riippell. 



19. ViTRiNA RiJppELLiANA, Pfr. Vitr. testa suhsemiglohosd, tenui, 

 arcuato-striatd, pellucidd, pariim nitidd, fulvd ; spird breviy ob- 

 tusiusculd ; suturd impressd ; anfractibus 3 convexiusculis, rapide 

 accrescentibus, ultimo ventroso, basi latiusculo ; aperturd obliqud, 

 lunato-rotundatd ; peristomate simplice, margine super o fere an- 

 gulatim antrorsum dilatato, columellari substricte recedente, basi 

 leviter arcuato ; margine interno anfractuum inconspicuo. 



Diam. 18, altit. 10 mill. 



From Abyssinia ; found by Dr. Riippell. 



20. ViTRiNA SowERBYANA, Pfr. Vitr. testd depressd, subauri- 

 formi, arcuatim plicatuld, tenuissimd, nitidd, pellucidd, brunneo- 

 fulvd; spird vix emersd ; suturd profunde impressd ; anfractibus 



3, primis convexiusculis, ultimo depresso, peripherid angulato, 

 basi convexiore ; aperturd ampld, perobliqud, lunato-ovali, mar- 

 ginibus conniventibus , supero vix dilatato, columellari perarcuato, 

 anguste membranaceo-marginato ; margine interno anfractuum 

 inconspicuo. 



Diam. 22, altit. 11 mill. 



From West Africa, 



21. ViTRiNA GRANDis, Bcck MSS. Vitr. testd depressd, tenui- 

 usculd, radiatim subtiliter plicatuld, diaphand, non nitente, albido- 

 stramined ; spird brevissimd, vix emersd, subpapillatd ; suturd 

 impressd; anfractibus 3§ rapids accrescentibus, subplanatis, ul- 

 timo depresso, peripherid obsolete angulato, basi lato, striatulo^ 

 nitido ; aperturd pariim obliqud, latd, lunari ; peristomate sim- 

 plice, margine supero antrorsum subdilatato, columellari subver- 

 ticaliter descendente, arcuatim in basalem, abiente. 



Diam. 18, alt. 8 mill. 

 From West Africa, Guinea. 



22. ViTRiNA ABYssiNicA, RiippcU MSS. Vitr. testd depresso- 

 ovatd, sublcEvigatd, diaphand, vix nitiduld, sordide virenti -corned; 

 spird brevi, convexiusculd ; suturd leviter impressd; anfractibus 

 2^ convexiusculis, celeriter accrescentibus, ultimo peripherid ro- 

 tundato, basi latiusculo ; aperturd obliqud, rotundato -lunari, trans- 

 verse dilatatd ; peristomate simplice, margine supe?w subrepando, 

 columellari recedente, arcuato. 



Diam. 10, altit. 5^ mill. 



From Abyssinia; collected by Dr. Riippell. 



23. ViTRiNA viRENS, Pfr. Vitr. testd dejjressiusculd , subsemiovali, 

 subtilissime striatuld, nitiduld, coriieo-virente ; spird planiusculd ; 

 suturd vix impressd ; anfractibus 3 vix convexiusculis, rapide 

 accrescentibus, ultimo subdepresso-rotundato, basi anguste mem- 

 branaceo-marginato ; aperturd obliqud, lunato-subcirculari ; peri- 

 stomate tenui, subinflexo, undique regulariter arcuato. 



Diam. 16, altit. 8 mill. 

 Locality unknown. 



