164 On new Mollusca from South Africa. 



transversely striate, and this is also the case round the 

 umbilical region, the strise towards the middle of the last 

 whorl soon ceasing ; the mouth is thin, simple ; aperture 

 rotund-ovate, coluraellar axis slightly thickened, white. 

 {Several specimens. 



Helix [Trachycystis) Alcocki, sp. n. (PI. XII. figs. 2, 2 a.) 



H, testa anguste umbilicata, depresso-conica, apice mammillato, ad 

 peripheriam obtusangulata ; anfractibus sex, ventricosulis, undique 

 transversim tenui-striatis, striis sericeis, longitudinaliter epider- 

 mide evanida coutectis, oblique costulatis, ultimo, apud periphe- 

 riam prtecipue, setifero ; apertura lunata, compressa ; peristomate 

 tenui, simpUci, apud marginem columellarem paullum reilexo. 



Long. 4, lat. 8 mill. 



Hah. Kowie {Crawford). 



Several specimens of a little shell apparently distinct from 

 its allies. In the setose epidermis it resembles H. tricho- 

 steiroma, M. & P., and is also near H. Loveni (Kr.), but is more 

 depressed than that species. 



Achatina Churchilliana^ sp. n. (PI. XII. fig. 3.) 



A. testa pyramidato-fusiformi, solidiuscula, apud apicem obtusa ; 

 anfractibus septem, tumidulis, ad suturas subimpressis, supra, 

 apud suturas, indistiucte granato-striatis, infra applanatis, laevibus, 

 epidermide tenui cinereo-ochracea tectis, anfractu ultimo pro- 

 ducto ; apertura oblonga ; peristomate simplici. 



Long. 3, lat. 1'50 unc. 



Hah. Natal {G. C. Churchill, Esq.). 



1'his plain-looking Achatina is doubtless one of the natal- 

 ensis group, but we cannot identify it with any of the hitherto 

 described species. The limits of variation in this genus have 

 not, so far, been studied, and the local forms merit more 

 attention than they have yet received. The label attached to 

 the specimen, now unique, in the Owens College Museum, Man- 

 chester, is as follows : — " Bulimus. G. C. Churchill, Esq. 

 Port Natal." 



We have much pleasure in connecting with this shell the 

 name of our friend Mr. Churchill, of Clifton, Bristol, so well 

 known in botanical and other scientific circles. 



Cyclostoma foveolatum, sp. n. (PI. XII. figs. 4, 4 a.) 



C testa anguste sed profunda umbiHcata, effuso-pyramidata, cinerea ; 

 anfractibus quiuque, ventricosis, nunc unicoloribus, nunc vittis 



