18/6.] REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. 623 



The J- 'alces are of moderate size and strength, and are placed rather 

 far back, owing to the projection of the ocular area ; they are slightly 

 divergent, and project a little from a vertical position ; their colour 

 is a deep rich red-brown ; and their surface is marked with numerous 

 transverse ingrained striatums. 



The palpi are of moderate length ; and their colour is yellow, the 

 radial joints yellow-brown ; the humeral joint is very strong and 

 tumid underneath, with a strong, pointed, tooth-like spur or promi- 

 nence near its base on the outer side ; this joint is thickly clothed with 

 coarse white hairs : the radial joint is shorter than the cubital, but 

 is produced laterally on each side, and has a pointed apophysis at its 

 extremity underneath ; the digital joint is large, and of an elongate 

 oval form and dark red-brown colour, clothed with dark hairs, a few at 

 the anterior extremity being of a paler hue. The palpal organs are 

 not complex, but highly developed and prominent, extending far 

 backwards beneath, and on the inner side of, the radial joint. 



The maxilla: and labium are blackish-brown, tipped with pale 

 yellow. 



The sternum is oval, and of a yellow colour. 



The abdomen is oval, of a somewhat flattened form, and sparingly 

 clothed with hairs ; its colour is yellow, marked, but not strongly, 

 on the upperside with yellow-brown, giving some faint indications 

 of an irregular longitudinal central yellowish band (along the fore 

 half of which is a dark marking), and some short, oblique, slightly 

 curved lateral stripes issuing from its hinder half; the lateral margins 

 also of the upperside are irregular, being in some examples marked 

 with short alternate yellowish and yellow-brown oblique markings. 



The female resembles the male in colours and markings, though 

 those of the cephalothorax are less strong and distinct than in that 

 sex. 



Adults of both sexes were found on rocks and walls in Upper 

 Egypt, and three immature examples near Alexandria. 



Menemerus interemptor, sp. n. 



Adult female, length 4 lines. 



This Spider is nearly allied to M. animatus, but is considerably 

 larger, and though resembling it in its general hue, is even less di- 

 stinct in its markings. 



The cephalothorax is dark yellow-brown, darkest on the caput, 

 and with an indistinct yellowish marginal band ; the whole surface 

 is clothed, but not very densely, with yellowish-grey, mixed with a 

 somewhat golden pubescence. The ocular area is broader than long ; 

 and the length of the hinder row of eyes is a little greater than that 

 of the anterior row. 



The legs are moderately strong, and not very long ; their relative 

 length appears to be 4, 1, 3, 2, though the difference, if any, 

 between 4 and 1, and 3 and 2, respectively, is very slight; those of 

 the first two pairs are yellow-brown, the third and fourth being yel- 

 low ; all are furnished, but not very conspicuously, with hairs, slender 

 bristles, and spines ; the tarsi are furnished at their extremities w r ith 



41* 



