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



tions and the margins of the cephalothorax are marked by dusky con- 

 verging lines. The abdomen is oval, moderately convex above, of a 

 blackish-brown colour, thinly dotted with fine bairs, and, when in 

 spirit of wine, seems to be covered thickly with minute yellowish- 

 brown freckles or dots, and several transverse angular lines or 

 chevrons in the central longitudinal line of the hinder part of the 

 upperside. 



The eyes are on black spots, closely grouped, but in the ordinary 

 position. The interval between those of the hind central pair is much 

 greater than that between each and the hind lateral nearest to it, and 

 equal to nearly an eye's diameter ; those of the foremost row 

 appeared to be as nearly as possible equidistant from, and, in fact, 

 almost contiguous to, each other ; those of the fore central pair are, 

 as usual, the smallest of the eight, the fore laterals being apparently 

 the largest. 



The leys are moderate in length and strength, their relative length 

 being 1, 4, 2, 3 ; they are furnished with hairs and a few slender 

 spine-like bristles, one near the centre of the upperside of the tibiae 

 of the fourth pair being stronger than the rest and decidedly a 

 spine. This shows the difficulty of accepting the character of the 

 armature of the legs as a generic one, the present species combining 

 (in this respect) the characters of both Linyphia and Eriyone. 



The palpi are short. The radial joint is not much longer though 

 stronger than the cubital ; it spreads out nearly all round at its fore 

 extremity, where it has a small thorn-like apophysis on the upper- 

 side, and another small, but rather stronger and more obtuse one 

 somewhere on its outer side. There are a few bristly hairs in a 

 group towards the outer part of the upperside of the radial joint, 

 and a single one towards the inner side. The digital joint is small. 

 The palpal organs are prominent, highly developed, and moderately 

 complex : a strong corneous process curves up from their base on 

 the inner side, round and over between the base of the digital and 

 fore extremity of the radial joints, and, tapering as it goes, ter- 

 minates in a point at the middle of the outer side of the digital 

 joint ; the position and direction of this process is very peculiar and 

 unlike any thing that I remember to have yet observed in the great 

 diversity of structure presented in the palpal organs of different 

 Spiders of this and other allied groups. Another process of these 

 organs in the present species forms a large, roundish, corneous lobe, 

 which projects considerably beneath on the outer side, and has a 

 small, black, pointed, spine-like projection near its extremity. 



The maxilla are short, strong, and considerably inclined towards 

 the labium, which last is of the usual, somewhat semicircular form ; 

 but it is strongly impressed in a transverse direction below its apex, 

 giving this part the appearance, when looked at sideways, of curling 

 back over towards the base : this is a peculiarity in the form of the 

 labium which I have noticed in some other species, including the 

 last described, E. Jlavescens ; and perhaps it will eventually be 

 found to be a good and useful character for the subdivision of this 

 now large group of obscure little Spiders. 



