582 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [Julie 20, 



of the caput ; and the abdomen (which projects well over the base of 

 the cephalothorax) is of a very short, broad, oval shape, obtusely 

 pointed behind and slightly truncate before. The sides of the cephalo- 

 thorax are thickly mottled with pale red-brown and yellow ; the 

 usual broad central longitudinal pale band, charged on its fore part 

 with the normal spade-shaped marking, is yellowish red-brown, 

 mottled finely with yellowish and fairly defined, at least at its hinder 

 part, which is prolonged in a dark red-brown line down the hinder 

 slope. 



The leys are normal in respect of length and strength ; they are 

 marbled and streaked more or less coarsely with white, yellowish, 

 and red-brown spots and blotches, and armed with spines, those on 

 the tibiae and metatarsi of the first and second pairs being rather 

 long and strong ; the metatarsi and tarsi are pale yellow, striped 

 longitudinally with white. 



The palpi are short and strong, of a pale yellow-brown colour, 

 mottled faintly with whitish and darker brown : the radial joint is 

 shorter than the cubital, and has its outer fore extremity produced 

 into a short, tapering, bluntish-pointed apophysis, and a much larger 

 one on its underside ; this latter is broad and truncated at its ex- 

 tremity, which is broader than its base ; the other (towards the inner 

 side) is pointed : the digital joint is of a short oval form, with the 

 usual apophysis issuing from near its base on the outer side. The 

 palpal organs are very similar to those of X. uudax, but may be 

 easily distinguished by the form of the J-shaped spine : this in the 

 present species is of a generally slenderer form, and has its shaft 

 strongly bent, whereas in X. audax it is nearly or cpute straight ; 

 the inner one of the cross bars also is longer in proportion to the 

 other than in that species. The large pointed corneous process which 

 issues from the inner side of the base of the palpal organs is also 

 destitute of the thorn-like spine near the base of its lower edge, 

 which is very conspicuous in X. audax and also in X. cristatus ; 

 in some respects this Spider appears to be more nearly like the latter 

 in the palpal organs than the former ; but whereas in X. cristatus 

 the surrounding spine has its fine point always (so far as I have 

 seen) straight, this in the present Spider is curved. 



The falces are short, strong, subcorneal, and of a yellowish white 

 colour, marked with red-brown, principally at the base and extre- 

 mities. 



The sternum is yellow-white, thickly speckled with pale purplish 

 red-brown spots ; and two oblique lines of the same colour are faintly 

 visible on each side, with a similar short central line from the hinder 

 extremity. 



The abdomen is thinly clothed with erect bristles, and has its upper- 

 side of a pale chocolate red-brown colour, marked with a few black 

 spots, chiefly near the margins, which are whitish and rugulose ; the 

 usual broad dentated band along the centre is visible and of a whitish 

 colour, but greatly obscured by minute chocolate red-brown spots, 

 the extreme points of the denticulations being the least obscured ; 

 about the middle of the denticulated band is a small, narrow, yellow 



