18 SECOND YARKAND MISSION. 



maxillae, and labium being, however, darker than the rest ; the falces, indeed, are dark 

 red-brown. 



The cephalothorax is oval, truncated both befoi-e and behind, and slightly constricted 

 on the margins at the fore part of the caput. The normal grooves and indentations are 

 distinct, but not very strongly marked ; the hinder slope is rather abrupt, but convexly 

 rounded, and the profile line of the upper part is as nearly as possible level, the fore part 

 of the caput (including the ocular area) rounding, and sloping a little forwards. The surface 

 is clothed with greyish pubescence, mixed with more erect and darkish hairs and bristles. 

 The lateral margins are bounded by a black-brown line. 



The eyes are in the ordinary position, forming two transverse curved lines ; the convexity 

 of the curve of the hinder row is directed forwards. This row is the longest and much the 

 most strongly curved, the foremost row being, in fact, almost straight, its convexity being 

 rather directed backwards ; thus the interval between the eyes of each lateral pair is consider- 

 ably greater than that between the fore and hind-central pairs. They are seated on blackish 

 tubercles ; those of the hind-central pair are oval, oblique, divided by an interval equal to the 

 length of their longest diameter, and, with the fore-central pair, from a square whose fore 

 side is very slightly the shortest ; each of the hind-central eyes is separated from the hind- 

 lateral next to it by more than twice its longest diameter ; the fore-laterals are the largest of 

 the eight, and each is separated from the fore-central next to it by less than the diameter of 

 the latter ; the interval between the fore-centrals being rather greater than this diameter ; 

 the height of the clypeus is about equal to the space, taken in a longitudinal line, between the 

 fore and hind-central pairs. 



The legs are strong and moderately long ; their relative length being 4, 1, 2, 3. They 

 are pretty thickly furnished with hairs, bristles, and spines ; the last are the longest, and 

 are most numerous on those of the third and fourth pairs ; there are, however, several spines 

 on the under sides of the tibiae and metatarsi of the first and second pairs also ; beneath the 

 two terminal claws is a small claw-tuft, and there is a thin scopula beneath the tarsi and a 

 portion of the metatarsi of the first and second pairs. 



Palpi rather short and slender ; the radial joint is rather longer than the cubital, and 

 the digital joint is longer than the radial, and slightly suffused with reddish brown. They 

 are furnished with hairs, bristles, and a few slender spines, and terminate with a single 

 curved claw. 



The falces are strong, moderate in length, rather prominent near the base in front, and 

 furnished with long prominent bristles and hairs. 



The maxilla are curved, and considerably inclined to the labium ; and are enlarged in a 

 rather semi-circular form at the outer side, so as to be very broad across the middle, where 

 they are also strongly impressed. 



The labium is of an oval form, truncated at its base, and rounded at the apex. 



The sternum is oval, pointed behind, and depressed between the insertions of the legs. 



The abdomen is oblong-oval, truncated before, rounded behind, and not very convex 

 above, but projecting a little over the base of the cephalothorax ; it is of a deep mouse-brown 

 colour with three or four transverse bars of different lengths, and tending to run one into 

 the other, formed by silky-grey pubescence on the fore-half of the upper side ; these are 

 succeeded by several transverse, blackish, but inconspicuous, angular lines or chevrons towards 

 the spinners. A silky-grey pubescence appears to be also more or less dispersed on the hinder 

 part ; and the whole upper side is more or less speckled with black points, some of which, 



