1876.] REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. 581 



pale dusky whitish yellow colour, the legs and palpi being st|ll 

 paler, and the abdomen creamy white. 



The general form is rather less robust than that of D. diana, and 

 the legs proportionally rather longer and more slender. 



The eyes of the foremost row are very nearly equidistant from 

 each other; while those of the hind central pair are perceptibly nearer 

 to each other than each is to the hind lateral on its side ; the interval 

 between those of each lateral pair is greater than that between the 

 fore and hind central pairs, owing to the rather greater length and 

 stronger curve of the hinder row ; the fore lateral eyes are largest of 

 the eight ; the height of the clypeus is less thau half of that of the 

 facial space. 



The leys are furnished sparingly with hairs and spines — their rela- 

 tive length being 2, 1, 4, 3, the difference between 2 and 1 and 

 4 and 3 respectively being very slight. 



The palpi are similar in colour to the legs and rather short ; the 

 radial joint is shorter than the cubital, and has its outer extremity 

 very slightly produced and terminating with a very small, blunt, 

 curved, brown, claw-like process ; the digital joint is narrow, and 

 about equal in length to the radial and cubital joints together ; the 

 palpal organs are not highly developed nor complex, but apparently 

 consist of a single flattish oval pale yellowish lobe, upon the hinder 

 part of which there rests a strongish, pale, curved spine springing 

 from the outer side of the base of the lobe, and tapering to a sharp 

 point on the inner side. 



The abdomen is of a regular oval form, and projects pretty well 

 over the base of the cephalothorax ; its upper surface is flattish, of 

 a nearly white cretaceous appearance, marked longitudinally from 

 near the fore extremity by a narrow central bar, defined merely by a 

 dull marginal line, and, tapering at each end, fining off to a single 

 line a little way from the spinners ; the five normal impressed spots 

 are visible on the upperside, one at the fore extremity of the central 

 bar, and four forming nearly a square figure behind it, the anterior 

 side of the figure being rather shorter than the rest ; the underside 

 of the abdomen is unicolorous. 



An adult female differed only in the legs of the first and second 

 pairs being shorter than those of the male. 



The above examples were found on low plants near Alexandria. 



Gen. Xysticus, C. Koch. 

 Xysticus hirtus. 



Thomisus hirtus, Sav. et Aud. Egypte, p. 164, pi. vi. fig. 11. 

 An adult female of this Spider was found near Cairo. 



Xysticus promiscuus, sp. n. 



Adult male, length If line. 



This small Xysticus is nearly allied to X. audax, Koch; its general 

 form, however, is shorter and broader, the cephalothorax being nearly 

 circular save for the usual broad truncate form of the fore extremity 



