2 
SECOND YAEKAND MISSION. 
some of tlie specimens of Valvata still liave 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 LimncBa (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. VlTEINA PELLUCIDA, MhU. 
Shell perfectly nndistingnishahle from European s|)ecimens from Mennighilfen and other 
localities. Dr. Stoliczka had previously collected some twenty specimens of a similar form 
at Lahoul. Yon Martens does not record the species from Tiukestan, hut describes anew 
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 Eussian descrip¬ 
tion, in which he compares his new species with T^. pellucida. Dr. Stohczka describes the 
animal of this Mataian shell as “ blackish, with the tentacles very short.” 
Sixteen specimens from Mataian, near Dras, Dpper Indus Valley: diam. 6, alt. 3|- mm.; 
apert. diam. 3|, alt. 3|-. 
2. Htalina (Coe-ulus) etjlva, Drap. 
Perfectly nndistingnishahle, as far at least as regards the shell, from the typical European 
form. Stoliczka had pre’^donsly fonnd the species in ahnndance at Spiti and Lahoul. Mr. 
Blanford also found the species at Mazendaran in Persia. Species from Pekin are weU re¬ 
presented by Deshayes (Nonv. Archiv. Museum, vol. x, ph 1). 
Three specimens from Wakhan and three from Mataian. 
3. Helix (Eruticicola) ph^ozoxa, v. Mart., Eigs. 1—3. 
E. v. Martens, Pedseh. Moll., pi. i, fig-. 8 (Kokand). 
Shell of solid texture, about the size of S. similaris, which indeed it somewhat resembles; 
umhilicate, conoidly globose, irregularly and roughly striate, decussated with ahnost microsco¬ 
pical spual lines; straw-white, with a single, very broad brown hand, just above the periphery; 
in a single specimen only is this hand altogether absent; spue conoidal, varying in being more 
or less raised; whorls six, the last more or less suhangulate, convex at base; aperture 
Innately rounded, with the peristome much thickened, and the columella exceedingly 
broadly reflected. 
Diam. 16^, 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. 
