218 LAND AND FRESHWATER 
Herr Pierre, from Calcutta. Iam in great doubts as to the correct 
identification of the latter species, which Semper figures on plate i. 
fig. 5. To my knowledge no forms like the Khasi-Hill G. hookeri 
have ever been taken in the country around Calcutta. If it was 
found in the Botanical Gardens there, it may have been brought 
from up the country in baskets of plants. Several imported species 
have been in this way introduced there from time to time; and 
some imay have become established. Again, although sent from 
Calcutta it may not have been taken there. 
Von Martens, in his account of the Land Shells in ‘ Die Preus- 
siche Expedition nach Ost-Asien,” follows Fischer, placing the Javan 
forms in Parmarion, and describes at length P. pupil/aris, Hum- 
bert (pl. 5. figs. 7-8, animal; and pl. 12. fig. 3, shell), with its three 
varieties punctata, marmorata, and vittata. There are also teniatus 
and reticulatus, Hasselt ; lutews and planus, Mousson, These Javan 
mollusks are evidently extremely close to the Burmese and Indian 
forms, and may eventually have to be included in Girasia. 
Nevill in his Hand-list of the Mollusca in the Indian Museum, 
Calcutta (1878), adopts Purmarion for two typical forms of Girasia 
trom the Khasi Hills, croceus and brunneus. 
The subgenus Hoplites was proposed for the Khasi-Hill slug-like 
forms by Mr. Theobald; but he gave no description of the genus, 
nor did he indicate the species, beyond saying it was 2 inches long, 
from Teria Ghat. It was probably my H. theobaldi, P. Z. 8. 1872, 
p. 517,=G. hookeri. 
The following will be an emended description of the genus as 
presented in the typical species :-— 
Shell rudimentary, horny, narrow, elongate, of one simple 
whorl; colour olivaceous, apex white, the central portion of the 
inside of the shell covered with a milky-white callus. About 1 inch 
long. (Plate LV. figs. 2, 2a, 2 6.) 
Animal slug-like, long, mantle largely developed ; shell and dorsal 
lobes are united all round ; and the shell is entirely covered by the 
former, with the exception of a narrow area on the posterior left 
margin. From the anterior right margin of this area a well-marked 
cicatricial line runs forward to just above the respiratory and anal 
orifice, and marks the usual distinct division of the shell-lobes in 
Austenia and Durgella, and their complete separation, as in Ma- 
crochlamys, into a left (frontal) aud right (posterior). The dorsal 
lobes are divided diagonally forward from the respiratory orifice into 
a large left dorsal lobe and (behind and adjacent to the orifices) a 
smaller right dorsal lobe; on the extreme posterior side a slight 
beading marks the junction of these lobes with the shell-lobes above. 
This portion of the animal is sunk into a deep V-shaped, smooth, and 
unwrinkled depression in the back, where the dorsal ridge of the 
foot terminates suddenly. Extremity of the foot truncate, with a 
large linear mucous gland; the pedal line is very distinct. 
Genital aperture near the lower and outer base of the right 
tentacle. 
The foot is divided longitudinally into three subequal median and 
