572 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [ June 20, 



Gen. Erigonu, Sav. 



Erigone spinosa. 



Erigone spinosa, Cambr. Spid. Palest. & Syr. P. Z. S. 1872, 

 p. 292, pi. xiii. fig. 12. 



Adult males of this very distinct species were found running on 

 the metals and permanent way of the railroad near Cairo and Alex- 

 andria. 



Erigone alexandrina. 



Erigone alexandrina, Cambr. P. Z. S. 1872, p. 755, pi. lxv. 

 fig. 11. 



Both sexes of this minute Spider were found on rushes and other 

 plants growing in a marsh near Alexandria. 



Gen. Linyphia, Latr. 



Linyphia extricata, sp. n. (Plate LIX. fig. 7.) 



Adult male, length 1^ line. 



This Spider, which is allied to L. nigrina, Westr., resembles it in 

 form, general appearance, and colours. 



The cephalothorax is of a dusky yellow-brown colour, with in- 

 distinct radiating brown lines following the normal grooves and in- 

 dentations. The height of the clypeus rather exceeds half that of the 

 facial space ; and the profile line of the cephalothorax (including the 

 hinder slope) forms a slightly curved line. m 



The eyes are very nearly equal in size and in two equally curved 

 lines, the curves directed away from each other, thus forming a trans- 

 verse oval figure ; those of the hinder row are equidistant from each 

 other, those of the fore central pair (which seem to be larger than 

 the hind centrals) being near together but not contiguous to each 

 other, the interval dividing them being a little less than that which 

 separates each from the fore lateral eye on its side. The line formed 

 by the fore centrals is a little shorter than that formed by the hind 

 centrals ; and each of the former is separated by an interval of its 

 own diameter from the latter nearest to it ; those of each lateral 

 pair are seated, slightly obliquely and contiguously to each other, 

 on a tubercle. 



The legs are long, slender, their relative length 1, 2, 4, 3, of a 

 pale yellowish hue tinged with brown, furnished sparingly with hairs 

 and a few short fine spines. 



The palpi are moderately long, slender, and of a similar colour to 

 the legs ; the cubital joint is short ; the radial equally short, but pro- 

 duced at its fore extremity on the upperside, the termination being 

 rather broader than the joint and evenly rounded ; the digital joint 

 is large, with a slight (and from some points of view angular) pro- 

 minence at its base on the inner side, and a large prominent lobe on 

 its outer side about the middle. The palpal organs are highly de- 

 veloped and complex : among the corneous processes of which they 

 are made up, the normal curved one at their base is of large size and 

 peculiarly characteristic form ; sometimes it lies in close proximity 



