2 
SECOND YARKAND MISSION. 
some of the specimens of Valvata still have the epidermis, and it is possible that where the 
water of the lake is fresh, the shells may live.” 
The re-appearance of two of M. Issel’s new species of Limncea (originally described 
from Persia) is important, as proving the constancy of these respective forms. The same 
remark holds good with regard to one of my new Yunnan species. 
1. Vitsina pelltjcida, Mull. 
Shell perfectly undistinguishable from European specimens from Mennighufen and other 
localities. Dr. Stoliczka had previously collected some twenty specimens of a similar form 
at Lalioul. Von Martens does not record the species from Turkestan, hut describes a new 
species as V. rugulosa, Koch, the Latin description and measurements of which seem to agree 
fairly with the Mataian form ; unfortunately I am unable to understand the Russian descrip- 
tion, in which he compares his new species with V. pellucida. Dr. Stoliczka describes the 
animal of this Mataian shell as “ blackish, with the tentacles very short.” 
Sixteen specimens from Mataian, near Dras, Upper Indus Valley : diam. 6, alt. 3} mm.; 
apert. diam. 3|, alt. 3|-. 
2. Hyalina (Conulus) fulva, Drap. 
Perfectly undistinguishable, as far at least as regards the shell, from the typical European 
form. Stoliczka had previously found the species in abundance at Spiti and Lahoul. Mr. 
Blanford also found the species at Mazendaran in Persia. Species from Pekin are well re- 
presented by Deshayes (Nouv. Archiv. Museum, vol. x, pi. 1). 
Three specimens from Wakhan and three from Mataian. 
3. Helix (Eruticicola) pileozona, v. Mart., Eigs. 1 — 3. 
E. v. Martens, Fedsch. Moll., pi. i, fig. 8 (Kokand) . 
Shell of solid texture, about the size of U. similar is, which indeed it somewhat resembles ; 
umbilicate, conoidly globose, irregularly and roughly striate, decussated with almost microsco- 
pical spiral lines ; straw- wliite, with a single, very broad brown hand, just above the periphery ; 
in a single specimen only is this hand altogether absent ; spire conoidal, varying in being more 
or less raised; whorls six, the last more or less suhangulate, convex at base; aperture 
lunately rounded, with the peristome much thickened, and the columella exceedingly 
broadly reflected. 
Diam. 16J, alt. 12^ ; apert. diam. 9, alt. 8 mm. 
Depressed variety from Pasrohat ; diam. 16, alt. 10|. 
I ought to note that I include the margins in recording measurements of the aperture. 
Twenty specimens from Sasak Taka (6,500 ft.) and five from Pasrohat, west of Yarkand. 
