new Mollusks from South Africa. 239 



7. Helix [Pella) liricostata, sp. n. 



//. losta (lei)rcssiiiscula, nigulosii, temii, cornea, olivacco-uigrcsciMitc, 

 liris nigatis confcrtim irrcpiilaritor uiuluiuo cincla ; anfractibus 

 quatuor, rapide accresccntibus, umbilico prot'undo, g diamctri 

 supcranto ; apcrtura liinari, peristoraatc simplici, reetc tcnui. 



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



Hah. K. Grlqualaiid. 



An extremely intcrestinfi" little S])ecies, of dark horny tex- 

 ture throiio-liout, beautifully longitudinally scul|)tured with 

 oblique radiating lirse. This shell is allied to H. rivularis, 

 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. 



//. testa parva, profimdo sed augustc umbilicata, globoso-dcprcssa, 

 olivacco- cornea, tcnui, confcrtim obliquis striis minutis lirata, 

 hie illic crassioribus, quasi varicosis ; anfractibus 4.J, convcxulis, 

 ultimo subcfFuso ; apcrtura lunari-ovata ; peristomatc touuissimo, 

 margiuc columellari retlexo. 



Long. I, lat. 14 mill. 



Hah. Port Elizabeth. 



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

 brown in colour, very deeply though somewhat narrowly 

 umbilicate, very finely obliquely close-ribbed tiiroughout (but 

 this is barely distinguishable without a lens) ; the plications 

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

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

 gin slightly reflected at the umbilicus. 'J'liis species cannot 

 be confounded with any other from South Africa which has 

 yet come under our notice. 



9. Vertigo tliaumasta, sp. n. 



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

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

 convesis, nitidis, Isevibus, ad suturas compressis ; peristomate 

 ovato-oblongo, tridentato — uno infra inscrtionem marginis siuistri, 

 pliciformi, intrante, altero in medio marginis columcllaris, 

 tertio pliciformi, intrante, in margine basali. 



Long. 3, lat. 1-50 mill. 



Hob. 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 



