320 LAMD AND FRESHWATER 



much smaller, which I at first coucluded were of another species, 

 possibly sonamnn/ensis. Fortunately portions of the shell still 

 remained attached to the body, and in one the protoconch. This, 

 together with the external characters, left no doubt they were 

 very young specimens of P. austeniiina. Of these I give figures 

 (figs. 1, 1 rt) which may be compared with that of F.Jli'mingi (Faun. 

 Brit. Ind. fig. 53, p. 146). The right sliell-lobe is long and tongue- 

 like, the lett small and triangular; the sole of the foot is very 

 distinctly divided. The fringed peripodial margin is broad, much 

 paler than the portion of the foot above it ; one peripodial groove 

 distinct, the other not so, but it can be made out. 



The generative organs of the smaller specimen were not seen 

 entire and united. The amatorial organ was rather short and 

 thickened, with blunt, pear-shaped point. The spermatheca was 

 elongately pear-shaped, and this contained a very perfect spermato- 

 phore (fig. If/), quite typical of the subfamily, yet differing some- 

 what in minor detail and worthy of description. The capsule is 

 elongate, at its anterior end it has only a few spines — a set of 

 three on one side of the flume, a bunch of four bifurcate spines on 

 the other. The flume was continuous down the duct or stem of 

 the spermatheca to where it was broken away from the free 

 oviduct. 



The jaw was lost. The radula is not in a state to count the 

 number of teeth in a satisfactory way, having got folded on itself, 

 but there is enough to show that in number and form they are very 

 much as in the larger specimen. 



The opportunity of examining a v^ery interesting land-shell has 

 been afforded me by the kindness of Baron E.osen, to whom my 

 sincere thanks are due for sending me some excellently preserved 

 specimens from Samarkand of Macrocldamys sogdiana. For many 

 years I have been most desirous of seeing the animal of this 

 species assigned to Macrocldamys having this far Western habitat. 

 Nevill alludes to this in the ' Scientific Results of the Second 

 Tarkand Mission (MoUusca) ' as follows : — " The most interesting 

 fact, however, seoms to me to be the entire disappearance, on 

 leaving Sonamurg on the confines of Kashmir, of the characteristic 

 Indo-Malayan genus Nanina, which reappears again (with two 

 species of the subgenus {Macrocldamys) in the Sarafshan Valley) ; 

 the same is also the case with species of BaUminus {Napceus), 

 Parmacella, and Limax (?). The two last, however, belong to the 

 European fauna, and species of them are mere stragglers on the 

 extreme north-west confines of India." 



The first species of the Macrochlamyince from this part of Central 

 Asia was described by Yon Martens *. 



* Malak. Eliitt. 1871, vol. xriii. p. 65, pi. i. figs. 1-3 — Helicarion sogdiana. 



This genus I have shown is an AustraUan one, with an animal very distinct 

 from the Asiatic Austenia, &c. It is the genus Macrachlamys, included in the 

 Caucasian Province by the Eev. A. H, Cooke, " Mollusca," Cambridge Nat. 

 Hist. p. 296 (1895). 



