MOLLUSCA OF INDIA. 141 
Ariophanta laidlayana, Theob. Cat. Supp. p. 23 ; Godwin-Austen, 
Journ. A. 8. B. 1880, p. 155. 
Nanina (Ariophanta) laidlayana, Nevill, Hand-list, p. 18. 
Locality. Manbhum. 
Original description :—‘ Testa constricte perforata, sinistrorsa, 
turbinato- depressa, tenur, oblique striata, striis confertissimis spirali- 
bus decussata, aduconden translucente, albida, fascia 1 supera an- 
gusta, rufo-castanea, peripheriam tangente, interdum 1 supera lata, 
et altera infera remotiuscula, ornata 3 periomphalo et pariete aper- 
tural castaneis ; spira depresse conoidea, apice obtusiusculo, sutwra 
leviter impressa ; anfractibus 5 sensim accrescentibus, ultimo ad peri- 
pheriam angulato, antice breviter descendente, subtus convexo ; aper- 
tura valde obliqua, subquadrato-lunata ; peristomate recto, acuto, 
margine columellari subrecte descendente, anguste reflewo, perforationem 
constrictam subtegente. 
** Diam. major 27, minor 23, axis 15 mill.; apert 15 mill. lata, 
133 alta. 
“ Hab. in Provincia Bengalensi Bheerbhoom, ubi exemplum unicum 
junius detexit J. W. Laidlay ; nuperrime in Provincia Orisse, non 
procul ab urbe Cuttack, exempla majora non raro invenit W. 
Theobald. 
‘* Named after a former Secretary of the Asiatic Society of Cal- 
cutta, to whom I am indebted for a specimen found by him many 
years ago in the region of the late Santhal insurrection. The re- 
discovery of the shell in about 20° N. lat., as well as the detection 
of H. capitium in the same quarter, shows ‘that these species range 
through nearly 5 degrees of latitude. The colouring of H. laid- 
layana has much resemblance to that of H. quesita, Fér., but the 
shell has nearer relations to H. interr upta, nobis, and H. trifasciata, 
Mull. It differs from H. interrupta in colour, depressed form, 
greater number of whorls, contracted perforation, descent of the 
last whorl above the aperture, and in the disposition of the bands. 
When a single broad dark band is present in interrupta, it touches 
the angulate periphery. From H. trifasciata it differs in lustre, 
less depressed form, want of solidity, contracted perforation, more 
vertical columellar lip, and in the disposition of the bands, that 
which is above the periphery in ¢rifasciata never touching the 
angle. The colour of the periomphalus and parietes of the aperture 
is also peculiar.” 
This species varies much: those with a broad brown band of 
colour on the upper surface of the whorls extending from near the 
periphery to the suture (Conch. Ind. fig. 5, plate lviii.) seem the 
most numerous ; some have the band very narrow (fig. 3), and in 
others it is absent, as in that given on Plate XXXIV., and fig. 4, 
Conch. Ind. plate lvyiii. 
ARIOPHANTA KADAPAENSIS, Nevill, =nicobarica, Chemn. 
Helix pomatia contraria nicobarica, Chem. ix. p. 79, tab. cviii. 
figs. 911, 912. 
