436 REV. O. P. CAMBRIDGE ON SIBERIAN SPIDERS. [May 6, 



at the caput are slight ; but the normal furrows and indentations are 

 well marked, and its colour is a pale dull yellowish ; the margins, 

 as well as a central longitudinal line and the two converging lines 

 which mark the form of the caput are black ; the central longitudinal 

 line has some long bristly hairs directed forwards. 



The eyes are on black spots, arranged in two transverse rows ; looked 

 at from the front the fore one is nearly straight, and the hinder one 

 the largest and much curved ; those of the hinder row are nearly 

 equidistant from each other, and about equal in size ; those of each 

 lateral pair are near together, but not contiguous to each other, 

 obliquely placed, and the fore one is the largest of the eight ; 

 those of the fore central pair are the smallest and rather further from 

 each other than each is from the fore lateral on its side. 



The legs are moderately long and strong ; their relative length 

 is 1, 4, 2, 3 ? those of the fourth and second pairs differ but very 

 little, and it was difficult to ascertain which was the longest ; they 

 are of a pale yellow colour, faintly but broadly banded with dusky 

 brown, and are furnished with hairs and long, strongish bristles ; 

 and each tarsus terminates with three claws. 



The palpi are moderately long, rather strong, and of a pale 

 yellowish colour ; the cubital and radial joints are short, but of 

 about equal length ; the former is rather gibbous in front, where it 

 has some black bristles closely grouped together at the fore part ; 

 the radial joint has a black, spiral or corkscrew, spiny apophysis 

 springing vertically from the outer side of its fore extremity, and 

 some strong black bristles on the inner side ; the digital joint is large, 

 broad-oval, very convex on its outer side, where it is furnished 

 pretty thickly with bristly hairs, and pointed at its fore extremity ; 

 the palpal organs are well developed but simple, and appeared to 

 be encircled by a strong corneous process or spine-like fillet. 



The falces are moderately strong, long, and rather projecting and 

 divergent at their extremities ; they did not appear to be armed 

 with any teeth on their inner surface ; and their colour is similar to 

 that of the cephalothorax. 



The maxillcB are strong, straight, broader at their extremity 

 (where they are obliquely truncated on the outer side) than at the 

 base, and rather darker in colour than the falces. 



The labium is of an oblong form, rather rounded at the apex, and 

 about half the length of the maxillae, to which it is similar in 

 colour, though perhaps rather more suffused with dusky blackish. 



Sternum heart-shaped, furnished with hairs and bristles, and of a 

 yellowish-brown colour. 



The abdomen is oval, bluntish at both ends, tolerably convex 

 above, and projecting but slightly over the base of the cephalo- 

 thorax ; it is spotted, mottled, and marked thickly with black- 

 brown and a warm brownish yellow, showing besides some parallel 

 and slightly oblique lateral lines of spots, a rather large and tolerably 

 conspicuous triangle on the centre of the upperside bounded by a 

 pale brownish-yellow line, and followed towards the spinners by 

 some similarly coloured pale angular lines or chevrons. The upper- 



