214 Mr. W. H. Benson on new species of Helices. 
substance of the shell as the calcareous matter, which is exceed- 
ingly thin and tender. The shell bears very much the appear- 
ance of a large globular Vitrina, for which it has been taken; 
but the rough surface of the shell shows that it has been formed 
by an animal of very different organization, and its affinities place 
it near the singular and beautiful Helicophantoid Helices Wal- 
toni of Ceylon, and magnifica of Madagascar. 
2. H. cacuminifera, nobis, n. s. 
T. obtecte perforata, conica, trochiformi, cornea, spira versus apicem 
attenuata, apice papillari, obtusiusculo ; anfractibus 8, lente cres- 
centibus, supra planatis, spiraliter lineis septem minute moniliferis, 
lmeisque intermediis minutioribus similibus munitis, ultimo acute 
compresso-carinato, subtus convexo, polito, radiato-striato ; aper- 
tura securiformi, peristomate acuto, labio superne vix dilatato, 
reflexo. 
Diam. major 19, minor 16, axis 10 mill. 
Hab. in cacuminibus montium Nilgheries, teste Jerdon. 
A shell smgular both m form and sculpture. The profile of 
the spire is somewhat concave owing to the attenuation of the 
spire towards the apex. 
3. H. crinigera, nobis, n. s. 
T. anguste umbilicata, depresso-trochiformi, cornea, radiato-costulata ; 
apice obtusiusculo ; anfractibus 6-64, vix convexiusculis, linea 
unica elevata supersuturali munitis; ultimo carinato, carma su- 
turaque pilis elongatis ciliatis, basi planiuscula, ad umbilicum com- 
pressiuscula, lineis impressis concentricis frequentibus ornata ; aper- 
tura obliqua angulato-lunari, securiformi; peristomate simplici, 
acuto. 
Diam. major 123, minor 12, alt. 6} mill. 
Hab. ad latus montium ‘“ Nilgheries”’ versus Orientem spectans. 
Teste Jerdon. 
This shell in size and characters is intermediate between Helix 
Guerini, Pfr., an inhabitant of the summits of. the Nilghery 
Mountains, and H. retifera, Pfr., which inhabits the warmer val- 
leys of the same range according to Dr. Jerdon, to whom I am 
indebted for specimens of all the three species from the localities 
indicated. 
4. H. acuducta, nobis, n. s. 
T. perforata, tenui, lenticulari, conica, acute carinata, superne costu- 
lato-striata, lineis impressis confertissime granulato-decussata, ‘sub- 
tus leevigata, lineis impressis frequentibus concentrice notata ; spira 
vix elevata, apice obtusiusculo ; anfractibus 5, planulatis, fere con- 
tabulatis, ultimo subtus tumido, carina infra compressa ; apertura — 
