56 



SECOND YARKAND MISSION. 



of the hind-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 terminate with a rather strong curved, black, toothed claw. 



The y 'alces are small, slightly projecting forwards, and of a pale yellow-brown colour. 



The maxillce 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 cephalothorax, 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 brown 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. 



Rob. Murree to Sind Valley, between July 4th and August 5th, 1873. 



Family THOMIS1D ES. 



Genus THONISVS, Walck. (adpartem). 



70. THOMISUS ALBIDTJS, 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 prove 

 it to have been already described, or else render the present description quite inadequate for 

 the determination of the species. As, however, there is no described species known to me 

 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 upper 

 side of the caput are prominent and sub-angular. The margins of the cephalothorax are 



