12 SECOND YARKAND MISSION. 



furnished with hairs, and in some examples an oblong dull marking, pointed at its hinder 

 extremity, is faintly traceable on the fore-half of the upper side, where there are usually also 

 six small dull spots, in three successive, transverse pairs, forming an oblong parallelogram ; 

 those of the middle pair are the nearest together. 



The spinners are long, but not very stout nor very unequal in length ; those of the 

 inferior pair are the largest and strongest : their colour is like that of the legs. 



The female resembles the male in colours' and general structure, but is rather larger ; 

 there is, however, some little variation in size in different individuals of both sexes ; the 

 form of the genital aperture, which is rather small, is simple, but, as usual, quite 

 characteristic. 



Hab. Kashghar, December 1873 ; Tanktze to Chagna and Pankong valley, between 

 the 15th and 21st of September 1873. Between Yangihissar and Sirikol, March ] 874 ; near 

 Leh, August and September 1873. Yangihissar, April 1874. Yarkand and neighbourhood, 

 November 1873. Road from Yarkand to Bursi, May 28th to June 17th, 1874 ; and road 

 across the Pamir from Sirikol to Panja and back, April 22nd to May 7th, 1874. Hills 

 between Sirikol and Aktalla, May 8th to 13th, 1874 ; and the Sind Valley, August 5th to 

 13th, 1873. 



It is thus the most widely spread and numerously represented species of this family 

 contained in the collection, occurring in all the five districts traversed. 



10. DBASSUS INTERLISUS, sp. n., PI. I, Fig. 9, s . 



Adult female : length 6| lines. 



The cephalothorax of this fine species is of an oblong-oval shape, tolerably convex above, 

 broadly truncated at the fore-extremity, and but very slightly constricted on the lateral 

 margin of the caput ; the profile line is very nearly level from the hinder slope to the occiput, 

 whence it slopes forwards in a more rounding form ; its colour is a bright reddish yellow- 

 brown, deepening gradually to the caput, the fore part and sides of which are black red- 

 brown : the whole of the cephalothorax is pretty densely clothed with short yellowish- grey 

 pubescent hairs ; the normal indentations are not very strongly defined, and the height of the 

 clypeus is about equal to the diameter of one of the fore-central eyes. 



The eyes are rather small, not very different in size, and placed in the two usual transverse 

 curved rows, the hinder row being the longest and most curved : they are not very closely 

 grouped together, and those of the fore-central pair are seated on a slight but perceptible pro- 

 minence. These two eyes are nearly two diameters distant from each other, and are much 

 more widely separated from each other than each is from the lateral eye of the same row on 

 its side, with which it is nearly, but not quite, contiguous ; those of the hind-central pair are 

 oval, not obliquely placed, but with their longer diameter in a directly transverse direction; 

 they are very near together, but not quite contiguous to each other, and each is separated by 

 a distance nearly equal to twice its longer diameter from the lateral eye of the same row on 

 its side ; the eyes of each lateral pair are placed in an oblique line, and are rather widely 

 separated. All the eyes, excepting those of the fore-central pair, are rather depressed or 

 sunken into the surface of the caput. 



The legs are strong and moderate in length, their relative length being 4, 1, 2, 3 ; they 

 are yellow, deepening to red-brown on the tarsi, and are furnished with hairs, bristles, and 



