76 
SECOND YARKAND MISSION. 
Genua — TIBULLUS, Sim. 
Tlianatus, C. L. Koch, ad partem. 
94. — Tibellus propinquus, sp. n. 
Immature female : length rather more than 2£ lines. 
This spider is very nearly allied to Tibellus oblongus (Walck.), which it resembles closely 
in form and colour. In the present species, however, the tibise and metatarsi of the legs, 
together with the upper sides of the femora of the first and second pairs, are speckled with 
minute, dark red-brown spots, while, among a large number of examples of the European 
species ( T . oblongus ), I can find no trace of this speckling. It is possible that the discovery 
of the adult males may show that this spotting of the legs, as well as a less definite abdo- 
minal marking, is merely a local variation not amounting to a specific distinction. 
Hab. — Kaslighar, December 1873. 
Genus— THANATU8, C. L. Koch. 
95.— Thanatus thorellii. 
Thanatus thorellii, Camhr., Spid. Pal. and Syria, Proc. Zool. Soc., 1872, p. 309. 
Hab. — Immature examples were found in the collections made at Yarkand in November 
1873, and on the road thence to Bursi, between May 28th and June 17th, 1874. 
96. — Thanatus albescens, sp. n. 
Adult female : length 2| lines. 
The ceplialo thorax is of a very flattened form ; it is as broad as, or broader than, long, 
truncated behind, and somewhat obtusely pointed at its anterior extremity in the ocular region; 
the lateral marginal constrictions of the caput are exceedingly slight ; it is of a pale dull yellow- 
brown hue, and has a narrow lateral white margin with a little white venose suffusion above 
it ; the occipital region is also paler than the surrounding surface. 
The falces are small, straight, nearly perpendicular, like the cephalothorax in colour, at 
their bases, and paler at their extremities. 
The legs, palpi , maxillce , and labium are of a pale dull straw-colour. The legs are rather 
long and slender. Those of the second pair are distinctly the longest, and the third 
rather the shortest. 
The eyes are very small, scarcely differing in size, and seated on round white tubercles 
in two curved rows, of which the anterior is much the shorter and more strongly curved. 
The interval between those of each lateral pair is distinctly greater than that between the 
fore- and hind-central pairs ; those of the hind-central pair are a little further from each other 
than each is from the hind-lateral on its side, while the interval between the four centrals is 
more than double that between each and the fore-lateral next to it, and just equal to that 
between each and the hind-central opposite to it. The fore-centrals appear to be very slightly 
larger than the fore-laterals, and the interval between the fore-central and its nearest fore- 
lateral eye is but a little more than the diameter of the former. 
