468 On 7teto Terrestrial MoUusca from South Africa. 



cult, however, to always discriminate them. We have seen 

 a good many specimens of this, which is probably one of the 

 commonest of the genus in its locality, and they are all uni- 

 formly conspicuous for the red turgid character of the suture 

 at tlie peripliery. 



Var. /S. mert'dionalisj var. nov. 



V. testa pulcherrime hyalina, tenuissima, pallide straminea, laevi ; 



spira convexa ; anfractibus Iffivibus, rotundis, nitidis ; apertura 



ovata. 

 Long. 10, lat. VJ mill. 



Hah. Port Elizabeth. 



From the first var. (rufofilosa) this form differs in its 

 smaller size, more glossy texture, greater smootimess of 

 whorls, and entire absence of the red margined suture. It is 

 likewise much Hatter. 



Var. 7. aloicola, var. nov. 



V. testa depresse subovata, olivaceo-comea, parum nit^nte ; spira 

 convexa, planulata ; anfractibus subrotundatis, laeviusculis ; aper- 

 tura lunari-ovata. 



Long. 12, lat. 16 mill. 



Ilah. Port Elizabeth (frequens !). 



Thisdiffers from the twopreceding in beingof more depressed 

 and flattened growth and olivaceous horny texture ; it is also 

 a coarser-moulded shell. It is known amongst Port- Elizabeth 

 collectors as the Aloe snail, since it feeds on the Liliaceous 

 plants {Aloe, Haworthia, &c.) which so abound on the arid 

 rocky plains around. 



We are by no means sure that these three all belong 

 to V. Hidtonue (Bens.), and would invite the attention of 

 collectors to these puzzling forms, in the hope that especial 

 regard may be paid to the animal. 



We should at present place the South-African species of 

 Vitrina (including Helicarion) in the following order : — 



V. cingulata, sp. nov. Algoa Bay. 



V. natalensis (Krauss). Natal. 



T'. zonamijdra, sp. nov. Algoa Bay. 



I'. Firppigii (Menko). Xatal. 



V. transvaalensis (Craven). Transvaal. 



K. Vanili nhrockii f( -raven). Transvaal. 



