MOLLUSCA OF INDIA. 233 
collected by Stoliczka they were not determined by him); Theob. 
J.A.8, B. 1878, p. 148. 
Original description :—* Testa valde depressa, peripheria oblongo- 
ovata, arcuatim striatula, nitente, translucente, pallide viridi-lute- 
scente ; spira valde planata, apice prominulo, sutura impressa, mar- 
ginata ; anfractibus 34 rapide accrescentibus, ultimo antice latissimo, 
superne antrorsum arcuato, horizontaliter compresso, non descendente, 
peripheria valde rotundata ; apertura valde obliqua, ovato-lunart ; 
peristomate simplici, marginibus conniventibus, columellari oblique 
descendente, basali leviter arcuato. 
“Diam. major 18, minor 13, axis 6 mill. Kashmir. 
” ” 16, ” ll, a Di 
66 ¢ 7 } 
Apert. lat. i alt. ite } Tend Chae 
99 ” ’ ” ” 
“ Habitat ad Teria Ghat, montium Khasi ; necnon ad Nasmana, 
regionis Kashmir. 
“ Of this species the larger example from Kashmir was first sent 
by Mr. Theobald, and subsequently another specimen, obtained by 
lim at Teria Ghat, was received. The non-occurrence of the form 
in the intermediate mountains of Sirmore, Kemaon, and Sikkim, 
where other species take its place, is worthy of note. It is remark- 
able for its depressed form and lengthened aperture, which at once 
distinguish it from its ally, V. Paortiealen occupying the mountain 
region between the rivers Sutle] and Gagra. The Khasia specimen 
has a few remote spiral depressions on the last whorl near the 
suture; they are probably accidental.” 
It is evident that Mr. Benson had before him two distinct species. 
The shells of this genus are so very similar they may easily be 
confounded. I have now received several spirit-specimens of un- 
doubted A. scutella from Mr. Theobald, collected by him in the 
N.W. Himalaya, at Murree and Dalhonsie, taken out of bottles 
with other undoubted species from the above localities, and referred 
to on (/. c.) p. 143. I can state there is no form at all approaching 
it at Teria Ghat, in the Khasi Hills, nor have I seen anything like 
it either from Darjling or Assam. 
Mr. Benson’s largest specimen (and it agrees in size with the 
shell I figure) is true scutella, the one he first obtained from Mr. 
Theobald; the other remains to be determined, and [ think I have 
the species i in my collection. The shell figured (Plate LIL. figs. 1c, 
1d, and Le) is from Mr. Theobald’s collection, from typical locality 
Nasmana, Chinab valley, on direct road from Islamabad over the 
Pir Panjal mountains to Sealkote. 
The chief interest attached to this species is its close resemblance 
on the one side to Macrochlamys, and on the other to the Helicarion- 
like group; it thus forms a link between them through M. flemingi 
and species like A. gigas, and we have presented to us an excellent 
example of the gradual growth of shell-lobes, completely altering 
and modifying the form of the animal and shell. 
Description of the Animal (Plate LIL. fig. 1 a). The shell does not 
