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



also are the maxillae, labium, and sternum, neither of which appeared 

 to present any thing remarkable in form. The abdomen is black, 

 clothed tolerably thickly with palish hairs ; it is of an oval form and 

 projects pretty strongly over the base of the cephalothorax ; about the 

 middle of the upperside are four strongish pits or circular depres- 

 sions, forming a quadrangle, whose fore side is the shortest ; behind 

 these, towards the spinners, are several transverse, pale, curved lines, 

 indicated by wrinkles or folds in the skin, and forming a longitudinal 

 series corresponding to the angular lines or chevrons so often observed 

 on the same part of the abdomen. The spinners are small and almost 

 concealed by a strong surrounding rim or elevated fold of a semicorne- 

 ous-looking nature ; the spiracular plates are pale yellow. 



The female is larger than the male, but resembles it in colours, 

 general structure, and character ; but the clypeus is lower. The falces 

 have several dark denticulations on their fore side, but not so many 

 or so strongly developed as the male ; they want the strong tooth 

 on the middle of the inner side, but have some smaller sharp ones in 

 the ordinary position towards the extremity on the iuner side. The 

 form of the sexual apperture is peculiar, vide figure (10 e). 



Both sexes, adult, were found in the Siberian collection received 

 from M. Taczanowski, with whose name I have great pleasure in 

 connecting this fine and striking species. 



Erigone (Neriene) wagje, sp. u. (Plate XLI. fig. 11.) 



Adult male, length 1 line. 



This very interesting Spider will be recognized at once as a near 

 ally to E. apicata (Bl.), having, like that species, a very character- 

 istic eminence behind the ocular area ; in this present instance, 

 however, there will be no difficulty in distinguishing the two species 

 at a glance. The eminence in the present species is much stronger 

 and higher ; it is of a somewhat subconical form and is directed for- 

 wards ; and at its base behind is a strong uotch or transverse indenta- 

 tion from its summit, which is obliquely truncated : it is continued by 

 a long, strong, curved, slightly sinuous, tapering spine, apparently 

 composed of two smaller spine-like bristles closely united ; in one 

 example the two were separated for a little distance from their ex- 

 tremities. The ocular area is prominent and has a somewhat nose- 

 like prominence below, upon which the fore central eyes are seated ; 

 this causes the clypeus to retreat strongly directly below the eyes, 

 but it is a little prominent at its lower margin ; the height of the 

 clypeus exceeds half that of the facial space. The colour of the 

 cephalothorax is yellowish brown, margined with black, and the nor- 

 mal grooves and indentations are dusky. 



The eyes form a transverse and rather obtuse oval figure ; they are 

 not very unequal in size ; those of the hind central pair are further 

 from each other than each is from the hind lateral on its side ; those 

 of each lateral pair are contiguous to each other, and placed slightly 

 obliquely ; the fore laterals are the largest of the eight, and each is 

 very nearly contiguous to the fore central on its side, the fore centrals 

 also being not quite contiguous to each other. 



