14 SECOND YARKAND MISSION. 



11. DE.ASSUS INVOLTJTUS, sp. n., PI. I, Fig. 10, ? . 



Adult female : length 4f lines. 



This spider has an exceedingly Clubiona-like appearance, but the inclination of the 

 maxillae to the lahium and the transverse impression of the former, as well as some other 

 characters, distinguish it at once from the spiders of that genus. 



The cephalothorax is oval, truncated at each end, but narrowest before ; its "colour is 

 rather a bright yellow -brown, deepening towards the fore part of the caput ; the normal 

 indentations, especially those which divide the caput and thorax, are suffused with brown ; 

 and the thoracic indentation is shown by a short, deep red-brown line. The marginal con- 

 strictions on each side of the caput are very slight, and the profile line, including the hinder 

 or thoracic slope, forms a pretty even, arched line ; the upper side is thus tolerably convex, 

 and its surface is thinly clothed with greyish sandy pubescence. 



The eyes are rather small, and in the ordinary two, transverse, curved rows, of which 

 the hinder one is the longest, and the most curved. The four central eyes form a rectangle, 

 whose longitudinal is rather greater than its transverse diameter ; those of the hind-central 

 pair are oval, very little, if at all, oblique, and separated from each other by an interval 

 equal to their longest diameter, and no more than half the length of that which separates 

 each from the lateral eye of the same row on its side. Those of each lateral pair form an 

 oblique line, and are wide apart, though rather nearer together than the hinder one is to the 

 hind-central eye next to it ; those of the fore-central pair (which are the largest of the 

 eight) are separated by an eye's interval, and are farther apart than each is from the fore- 

 lateral eye on its side ; the height of the clypeus is slightly greater than the diameter of one 

 of the fore-central eyes. 



The legs are moderately strong, but not long ; their relative length is 4, 1, 2, 3, and they 

 are of a yellow colour, furnished with hairs and spines ; these latter are, nearly all, on those 

 of the third and fourth pairs ; the two terminal tarsal claws have a small claw-tuft beneath 

 them, and there is a scopula underneath the metatarsi and tarsi of the first and second, and 

 under the tarsi of the third and fourth pairs. 



The palpi are moderate in length and strength, similar to the legs in colour, and 

 furnished with hairs and a few spines. 



Thefalces are moderately long and strong, straight, and a little projecting in their 

 direction ; they are of a red-brown colour, furnished with bristles in front, and armed with 

 two small teeth, close together at the inner corner of the fore-extremity. 



The maxillce are strong, inclined towards the labium, broader than usual near their 

 extremities, and strongly impressed across the middle. They are of a red-brown colour, pale 

 yellowish- white at the extremities. 



The labium is oblong, its length being nearly about half that of the maxillae, which 

 it resembles in colour, with a pale margin at the apex. 



The sternum is oval, pointed behind, and with depressions between the insertions of 

 the legs ; it is of a light brownish-yellow colour, suffused with a rather darker hue towards 

 the margins. 



The abdomen is oval, pointed at its hinder extremity ; it is of a dull clay-yellow colour, 

 thinly clothed with hairs ; along the middle of the fore-half of the upper side is an oblong, 

 dull-brownish marking, which tapers to a point at its hinder extremity, near which, on 



