new Mollusks from South Africa. 239 



7. Helix (Pella) Itricostata, sp. n. 



H. testa depressiuscula, rugulosa, tenui, cornea, olivaceo-nigrescente, 

 liris rugatis conferfcim irregularitcr undique cincta ; anfraetibus 

 quatuor, rapide accrescentibus, umbilico prot'uiido, g diametri 

 superante ; apertura lunari, peristomate simplici, recte tenui. 



Long. 1-50, lat. 2-50 mill. 



Hab. E. Griqualand. 



An extremely interesting little species, of dark horny tex- 

 ture throughout, beautifully longitudinally sculptured with 

 oblique radiating liree. This shell is allied to H. rividaris, 

 Krauss, judging from his figure ; but we have not been so 

 fortunate as to be able to examine the shell itself. 



8. Helix hottentota, sp, n. 



H. testa parva, profunde sed angiiste umbilicata, globoso-depressa. 

 olivacco-cornea, tenui, confertim obliquis striis minutis lirata, 

 hie illic crassioribus, quasi varicosis ; anfraetibus 41, convesulis, 

 ultimo subcifuso ; aportura lunari-ovata ; peristomate tenuissimo, 

 margine columellari reflexo. 



Long. I, lat. 1^ mill. 



Hab. Port Elizabeth. 



An extremely minute, thin, horny, subpellucid shell, olive- 

 brown in colour, very .deeply though somewhat narrowly 

 umbilicate, very finely obliquely close-ribbed throughout (but 

 this is barely distinguishable without a lens) ; the plications 

 of the strijB are occasionally thicker, giving here and there an 

 appearance of varices ; lip simple, very thin, columellar mar- 

 gin slightly reflected at the umbilicus. This species cannot 

 be confounded with any other from South Africa which has 

 yet come under our notice. 



9. Vertigo thaumasta, sp. n. 



V. testa oblongo-cylindrica, sinistrali, ad apicem albida, gradatim 

 olivaceo-fuscescente usque ad basin; anfraetibus sex, tumido- 

 convesis, nitidis, Itevibus, ad suturas compressis ; peristomate 

 ovato-oblongo, tridentato — uno infra insortionem marginis sinistri, 

 pliciformi, intrante, altero in medio marginis columellaris, 

 tertio pliciformi, intrante, in margine basali. 



Long. 3, lat. 1-50 mill. 



Hab. Port Elizabeth. 



A truly remarkable shell, and one of which the genus itself 

 is a little doubtful until the animal be examined. It is 

 sinistral, cylindrical, whitish at the apex, otherwise brown, 

 the mouth being furnished with four deeply-seated plaited 



