1874.] REV. O. P. CAMBRIDGE ON NEW DRASSIDES. 401 



pair stronger and about one third longer than those of the superior 

 pair. The spiracular plates are very nearly of the same colour as the 

 rest of the abdomen, and, like it, clothed with hairs. 



A single adult male of this Spider was found by myself among debris 

 of an old wall at Cairo. It may be distinguished easily by the peculiar 

 form of the radial apophysis, and large size of the fore central pair of 

 eyes. 



Genus Micaria (Westr.). 



Micaria armata, sp. n. (Plate LII. fig. 26.) 



Adult female, length Ij line. 



This exceedingly brilliant little Spider belongs to a group of the 

 genus Micaria whose eyes are in the position of those of the genus 

 Gnaphosa, and the abdomen connected with the cephalothorax by 

 a distinct pedicle. M. Lucas has described two species of this group, 

 in his work on Algerian Spiders, in the genus Drassus. Dr. L. Koch 

 has, in his work on the Drassides, included these species as (to him) 

 unknown species of the genus Gnaphosa, probably so allocating 

 them from the strongly marked position of the eyes. I cannot, how- 

 ever, find any difference in the form of the maxillae from Micaria ; 

 and the whole appearance, form, and brilliancy of colouring (in the 

 present instance) connects these Spiders unmistakably with Micaria 

 rather than with Gnaphosa. 



Micaria armata may be distinguished at once by the palpi as well 

 as the tibiae and metatarsi of the legs of the first pair being armed 

 with long, strong spines. 



The cephalothorax is oval, rather narrow before, and but slightly 

 constricted laterally at the caput ; it is of a brownish-yellow colour, 

 the caput being dark brown, the whole clothed with scaly hairs re- 

 flecting the most brilliant metallic tints of gold, violet, purple, and 

 green. 



The eyes are in two transverse, rather widely separated, curved 

 rows, the curves directed towards each other ; the foremost row is 

 much the shortest, and the eyes composing it are almost, but not 

 quite contiguous to each other ; the laterals of this as well as of the 

 hinder row are larger than the centrals ; the hind centrals are oval, 

 oblique, and further from each other than each is from the lateral of 

 the same row on its side ; the eyes of each lateral pair are as widely 

 separated from each other as the lateral eyes of the foremost row. 

 The height of the clypeus is equal to the space between the fore and 

 hind central pairs of eyes. 



The legs are long and slender ; their relative length appeared to be 

 4, 1 , 2, 3 ; they are of a pale yellow colour, with a strong longitudinal 

 black stripe on the femora of the 2nd, 3rd, and 4th pairs, the lower 

 part of those of the first pair being black : beneath the metatarsi and 

 tibiae of the first pair are some long, strong, prominent, divergent 

 spines, apparently articulated to small tubercles ; one pair of these are 

 beneath the metatarsi, two pairs beneath the tibiae, and a single one 

 issuing from a black spot inside each of the femora ; besides these 

 spines the legs are only furnished, and that sparingly, with hairs. 



