56 
SECOND YARKAND MISSION. 
of the liincl-central pair is greater than that between each of them and the hind-lateral on 
its side ; and the interval between those of the fore-central pair, which are seated on a 
slight prominence, is less than that between each of them and the fore-lateral on its side, 
the latter interval being also less than that between the eyes of each lateral pair. The 
interval between the fore-centrals is also very nearly as great as that between each hind- 
central eye and the hind- lateral on its side. The four central eyes form a quadrangular 
figure whose fore-side is the shortest and its hinder side slightly the longest. The clypeus 
is almost obsolete. 
The legs are short, and those of the first and fourth, and second and third pairs 
respectively, do not differ greatly in length ; those of the first pair are much the strongest, 
their relative length being 1, 4, 2, 3. They are of a pale yellow-brown colour, clouded in 
parts with a darker hue ; excepting the calamistra on the metatarsi of the fourth pair, there 
were scarcely any hairs on the legs, but probably some of them had been rubbed off. 
The palpi are short, and slender, of a dull yellow colour, furnished with bristles and grey 
hairs, and terndnate with a rather strong curved, black, toothed claw. 
Th efalces are small, slightly projecting forwards, and of a pale yellow-brown colour. 
The maxillae and labium are of normal form, and similar in colour to the palpi. 
The sternum is heart-shaped, and of a pale brownish-yellow colour. 
The abdomen is large, very much elevated and obtuse at its anterior extremity, which pro- 
jects considerably over the cephalotliorax, and somewhat pointed behind on either side of the 
upper part; near the anterior extremity is a roundish, somewhat sub-conical protuberance. 
The colour of the abdomen is yellowish white ; an irregular brownish venose line extends 
along the middle of the fore part of the upper side, and emits some other fine venose lines 
on each side as it runs backwards ; about the middle of each side, near, and partly on, the 
under side, is a rather oblique brow r n patch ; and another of the same colour extends along a 
portion of the middle of the under side. On each side, near the base of the spinners, are 
two white spots, and immediately in front of the usual spinners is the supernumerary spin- 
ning organ. An obtuse prominent pale-yellowish process, slightly indented at its extremity 
and pointed backwards, is connected with the genital aperture. 
Bab . — Murree to Sind Valley, between July 4th and August 5th, 1873. 
Family — Til 0 All SI D ES. 
Genus — THOMISUS, Walck. (ad partem). 
70. — Thomisus albidus, sp. n. 
Immature female : length If lines. 
It is with some hesitation that I describe this spider as a new species, since it is possible 
that in the adult state it may present some other specific characters which may either pro' e 
it to have been already described, or else render the present description quite inadequate f° r 
the determination of the species. As, however, there is no described species known to nit' 
to which I can refer it, I venture to include it here as new. 
The cephalothorax is broadest quite at the hinder extremity, and narrows gradually to 
the fore extremity, which is also tolerably broad and truncated : the fore corners of the upp er 
side of the caput are prominent and sub-angular. The margins of the cephalothorax ai e 
