1873.] REV. O. P. CAMBRIDGE ON SIBERIAN SPIDERS. 445 



tations marked with a rather darker hue ; there are some fine hairs 

 on the upper part of the caput ; and the ocular area is slightly tuber- 

 culiform by the depression of the surface immediately surrounding 

 and the prominence of the portion on which the eyes of the fore 

 central pair are seated. 



The eyes are in the ordinary position, and describe a transverse 

 oblong figure, whose transverse diameter is about double its 

 longitudinal diameter ; those of the hind central pair are rather de- 

 pressed or sunken and imbedded, and the interval that separates them 

 is greater than that which separates each from the lateral on its side ; 

 those of each lateral pair are seated obliquely and contiguous to each 

 other, the fore one being the largest of the eight ; those of the fore 

 central pair are seated on the fore side of a somewhat circular promi- 

 nence or slight convexity, comprising the greater part of the inside of 

 the ocular area ; they are rather the smallest of the eight, near together 

 but not contiguous to each other, and each is separated by about its 

 own diameter's distance from the fore lateral on its side ; when looked 

 at from the front the fore central eyes are placed above the straight 

 line formed by the fore laterals. 



The legs are moderately long and strong ; and their relative length 

 appeared to be 4, 1, 2, 3 ; their colour is yellow ; and they are 

 furnished with hairs and a very few slender erect spine-like tapering 

 bristles. 



The palpi are long, similar in colour to the legs, except the digital 

 joint, which is brown and furnished with hairs. The cubital joint is 

 double the length of the radial, slightly curved, and enlarging towards 

 its fore extremity, which is strongly produced on its outer side, rather 

 beneath, into a prominent angular spur, very similar to that of E. 

 affinis (Bl.), E. graminicola (Sund.), but less strong and marked than 

 in E. longipalpis and its near allies, though approaching to a similar 

 type of structure; about the middle of the margin of the upper ex- 

 tremity is a small red-brown tooth-like prominence. The radial joint 

 is small at its junction with the cubital, but enlarges considerably at 

 its extremity, where on the outer side it is produced into a long and 

 strong curved tapering apophysis, pointed at its extremity, which is 

 directed inwards ; the upper and inner margin of this apophysis is 

 nearly black, with a corneous appearance towards the extremity ; and 

 at about the middle of its curvature there is a small angular tooth- 

 like prominence. The digital joint is large and of a somewhat oblong- 

 oval form. The palpal organs are prominent, highly developed, but 

 not very complex ; a strong black spine issues from a corneous process 

 at their base and curves over to their fore extremity with a bold free 

 sweep ; and a large strong corneous process margined with black runs 

 along beneath their outer side. The falces are strong, prominent at 

 their base in front, and excavated on the lower part of their inner sides ; 

 their upper surface is furnished with a number of small dark denti- 

 culations, mostly towards the outer sides; and a little below the middle 

 of each falx is a large sharp tooth, obliquely directed downwards and 

 inwards, strongly resembling a similar tooth in E. dentata, E. affinis, 

 and others. The falces are similar in colour to the cephalothorax, as 



