MOLLUSCA OF INDIA. Lay 
above, growing paler to the umbilicus, where it is horn-colour. 
Surface somewhat undulated by the irregular lines of growth, and 
rendered minutely rugose by very fine, serpentine, revolving lines, 
forming conspicuous wrinkles near the carina; whorls 5, forming 
a regular, moderately elevated spire ; the suture slightly impressed ; 
the periphery surrounded by a prominent, compressed, but acute 
keel, which becomes lost towards the aperture; aperture rounded, 
height and width about equal; lip simple, slightly reverted in the 
umbilical region, some vitreous matter across the penultimate 
whorl ; umbilicus rather large, but not deep. 
“Diam. 1? inch, height 1 inch. 
“This large heterostrophe Helia resembles an inverted specimen of 
one of that group of shells, so common and so varied, from the 
Philippine Islands, of which H. lamarckii is one. Young specimens 
might at first glance be confounded with H. himalana, Lea; but 
the himalana is much more globular, the surface less striated, the 
carina quite indistinct, and the umbilicus smaller. 
‘“« Hab, Province of Tavoy.” 
ARIOPHANTA? RETRORSA. (Plate XXXIV. fig. 4, a young specimen 
dissected.) 
Locality. Mulé-it Range, Tenasserim (0. Limborg). 
Shell sinistral, smaller and more solid than typical shells in Mr. 
Theobald’s collection. 
Sculpture (Plate XXXIV. fig. 5). 
Size: maj. diam. 38°5, min. 32:0, alt. axis 18-0 mm. 
- POM as poltaoee \53 0-71 inch. 
There are no shell-lobes to the mantle, and the dorsal lobes are quite 
simple. The odontophore has been noticed on p. 132 when de- 
scribing the genus. The teeth (Plate XXXIV. figs. 8, 8a) are 
arranged thus— 
AD la, oe tele AD 
or 
OT aeg hie le 
ARIOPHANTA BAJADERA, Pfr. 
Helix bajadera, Pfr. Zeitschr. f. Malak. 1850, p. 69; Chem. ed. ii. 
Helix, no. 860, t. cxxxiii. f. 10, 11; Pfr. Mon. Hel. vol. iii. p. 52, 
vol. iv. p. 250; Reeve, Conch. Icon. f. 388 ; Conch. Ind. p. 45 (as 
from Bengal, a wrong locality). 
Ariophanta bajadera, Theob. Cat. Supp. p. 22 (Nagpur and Bom- 
bay); Nevill, Hand-list, p. 19. 
Benson remarks, in the A. M. N. Hist. x. p. 350 (1852), that 
‘© Pfeiffer has ascribed his handsome reversed species, Heliv bajadera, 
to Bengal, on the authority of Cuming’s collection. I have always 
held this habitat as more than doubtful, no specimen having ever 
been detected in any quarter of the Bengal Presidency by myself or 
my fellow-labourers in this field ;” and I find the following in MSS. : 
