£32 LAND AND FRESHWATER 
Genus ArropHanta. (Plates XX XIII, XXXIV.) 
Ariophanta, Desmoulins, Bull. Soc. Bordeaux, iii. p. 227 (Nov. 
1829), pl. i.figs. 1-5; H. & A. Adams, Gen. Rec. Moll. vol. ii. p. 225 
(1858); Albers, Die Heliccen, p. 62 (1860); W.'T. Blanford (sec. B, 
as subgenus of Nanina), A. M. N. H. 1863, xi. p.85; Semper, Reisen 
Phil. p. 50 (1870); Theobald, Supp. Cat. p. 5 (1876); Nevill, Hand- 
list, p. 18 (1878); Godwin-Austen, Journ. As. Soc. Beng. (1880). 
Nanina (Ariophanta), Clessin, Nomen. Helic. 1881, p. 54. 
Nanina, H. Beck, Index Moll. Mus. Christ. Fred. (1837). 
Desmoulins founded this genus on the animal of a specimen 
sent to him alive by M. Théophile Laterrade in March 1829 from 
the island of Elephanta, Bombay. The mollusk lived some short 
time, and two very good drawings of it were made*. Previous to 
this the shell only had been known, and described by Miller as 
Heliv levipes. To M. Desmoulins (vide Part III. p. 78) therefore 
belongs all the credit of first noticing and distinguishing the very 
distinct and large group of Asiatic Helices possessing a mucous pore 
at the extremity of the foot, and for which group so characterized 
he proposed the title Pherepore, placing the Bombay shell in the 
above subgenus. 
Albers (‘Die Heliceen,’ p. 62, 1860) defines the subgenus by 
the shell alone as follows :—*‘ Vesta sinistrorsa, umbilicata, tenuis, 
diaphana ; anfractus ultimus angulatus vel carinatus ; apertura 
obliqua, lunaris, peristoma simplex, acutum, margine columellari 
reflewo.” I now describe the animal in more detail, taken from 
another, but a closely allied, species, A. itmmerita, W. Blt., from 
Southern India, collected and supplied to me by Colonel Beddome. 
Animal, The shell-lobe (Plate XXXIII. figs. 2, 2a, s.l.) is a 
simple narrow band slightly reflected over the peristome ; the right 
dorsal lobe (7.d.l.) is divided into two parts, an anterior and a 
posterior—in this respect as in Macrochlamys (vide Plate XXV. 
figs. 8,9); but the former conceals much more the respiratory and anal 
orifices. The left dorsal lobe (/.d.l.) is simple, in one piece. ‘The 
mucous pore (figs.3, 3a) is, as described by Mr. Blanford, ‘‘ above the 
flattened posterior extremity of the foot and without a lobe above 
it.” The orifice is a narrow slit which does not reach to the sole 
of the foot. The pedal line extends up to the lower terminal side 
of the foot, from the border of which regular oblique grooves are 
given off. The sole is broad, with a narrow distinct border. 
Generative organs (figs. 6, 6a). The penis is short from the 
junction of the vas deferens ; it has a large kale-sac with a blunt 
end; the spermatheca correspondingly small. The amatorial organ 
is present, haying a long sharp point or “ sagitta amatoria.” 
Odontophore. The radula (figs. 5, 5a, 56) is quite distinct from 
Macrochlamys in all the Indian species I have examined: the central 
* They are copied in Fig. Moll. Anim. by Maria E. Gray, pl. 288. fig. 7 ; 
also by Adams in Gen, Moll. pl. Ixxix. figs. 6, 6a. 
