492 Mr. W. H. Benson on new Species of Helix 
striatula, subleevigata, superne non nitente, lineis confertissimis 
vix impressis, sub lente decussata, infra polita, translucente, viri- 
descenti-cornea; spira subconoidea, sutura impressa, anguste 
marginata, apice obtuso; anfractibus 4, gradatim accrescentibus, 
convexiusculis, ultimo versus peripheriam obtusam depressiusculo, 
subtus convexo; apertura obliqua, suborbiculato-lunata; peristo- 
mate tenui, recto, acuto ; margine columellari oblique descendente, 
superne breviter calloso-reflexo, perforationem obtegente. 
Diam. major 153, minor 13, axis 9 mill. 
Habitat prope Colesberg. Detexit D. Arnott. 
2. Helix Phytostylus, B., u. sp. 
H. testa imperforata, turbinato-subglobosa, tenui, irregulariter oblique 
striatula, lineis minutissimis confertissimis spiralibus decussata, 
albida, opaca, strigis obliquis, angustis, luteo-fuscis, translucenti- 
bus, politis ornata, periomphalo, peristomate aperturaque intus 
colore eodem tinctis; spira convexa, conoidea, sutura impressa, 
apice obtuso; anfractibus 5, convexiusculis, ultimo rotundato, 
subtus convexo, periomphalo anguste excavato ; apertura obliqua, 
_ rotundato-lunari; peristomate tenui, acuto; margine columellari 
bitorto, superne intrante, circulariter subexcavato, medio angulato- 
dentato, state calloso, aurantiaco. 
Diam. major 16, minor 14, axis 12 mill. 
Habitat ad Colesberg, et prope Riversdale. 
A single specimen from Colesberg was sent for examination 
by Mr. EK. Layard. Subsequently, I received from Riversdale, 
in the east part of Swellendam, specimens in various stages of 
growth, collected by a relative, Mrs. J. F. Hudson. The younger 
shells are more translucent, and the twisted columella has a 
thinner and less angularly projecting laminar tooth, the base of 
which, in adult specimens, has a resemblance to the truncation. 
observable in Achatina. 
Some specimens are marked with irregular, grey or translu 
cent corneous spots. The hydrophanous colouring reminds the’ 
observer of the banded white and corneous brown species, H. 
Cotyledonis, B., which I discovered near Simonstown, and which 
is evidently a near ally of H. Phytostylus, from the tendency to 
a callous twist apparent at the upper part of the similarly 
entering columella. 
8. Helix Capsula, B., un. sp. 
H. testa imperforata, subconoideo-depressa, tenui, oblique striatula, 
sub lente minutissime obsolete decussata, translucente, polita, 
viridescenti-cornea ; spira convexiuscula, sutura impressa, sub- 
marginata, apice vix elevato, obtuso; anfractibus 4, rapide accres- 
centibus, convexiusculis, ultimo antice majore, subtus convexo, 
medio excavato, peripheria rotundata ; apertura obliqua, orbiculato- 
a a 
Tee D 
