new Mollusks from South Africa. 85 
peristomate simplici, acuto, ad marginem columellarem breviter 
triangulatim reflexo. 
Long. 3, lat. 4°50 mill. 
Hab. Somerset District, S. Africa. 
Allied to H. bisculpta (Benson), from which this little 
species differs in its whorls being more discoid, greater depres- 
sion of spire, and smaller size; the system of sculpture, so 
far as the closely ranged longitudinal strie are concerned, 
though apparently identical, is found upon examination with 
a strong lens to be far more clearly and finely developed in 
fl. bisculpta, the striz in that species looking like finely cut 
serrations round the edge of the periphery, while in H. epe- 
trima they are barely perceptible and the edge of the shell 
- looks ragged in comparison. 
3. Helix (Pella) lygea, sp. un. (Pl. IV. fig. 7.) 
Hf. testa profunde sed anguste umbilicata, cornea, tenui; spira 
depresso-conoidea ; anfractibus sex (ultimo acuti-carinato), undi- 
que confertim regulariter obliquistriatis; apertura lunari: peri- 
stomate simplici, ad basin reflexo, et ad marginem columellarem 
laminam triangularem formante. 
Long. 7, lat. 12 mill. 
Hab. Natal (Lightfoot). 
A conspicuous species, but one which we have not seen in 
good live condition. It is of the same horny and striated 
character of whorl as the last two species, much resembling 
H., lens (Fér.) in miniature, but the outer lip is not so strongly 
expanded nor developed as in that species. 
4, Stenogyra cacuminata, sp.n. (Pl. VI. fig. 2.) 
S. testa acute turrita, gracili, pellucida, albo-cornea, undique leevis- 
sima, nitida; anfractibus decem, ultimis quinque fere uniformibus, 
ad apicem sensim gradatulis, apice quasi-papillari; apertura 
ovata; peristomate simplici, acuto. 
Long. 21, lat. 5 mill. 
Hab. Bedford (Farquhar). 
A remarkably delicate, shining, pellucid shell, differing 
from all the species of the genus hitherto described, though 
its characters are simple enough. 
5. Ennea thelodonia, sp.n. (Pl. VI. fig. 4.) 
E. testa subrimata, breviter cylindriformi, obtusa, albo-cornea, 
nitida, tenuissime et regulariter obliquistriata; anfractibus sex, 
