1876.] REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. 600 



though I am inclined to think it is of a distinct species. In some 

 adult male examples the legs are entirely yellow, without any dark 

 markings or annulations whatever ; in general, however, they are more 

 or less distinctly annulated with dusky brown or brown-black, 

 especially in the females. 



Adults of both sexes were found near Alexandria. 



Fam. Sphasides. 

 Gen. Oxyopes, Latr. 

 Oxyopes alexandrinus. 



Sjvhasus alexandrinus, Sav. et Aud. Egypte, p. 1-12, pi. iv. fig. 1. 

 Adult and immature examples of each sex were found near Cairo 

 on branches of the sont acacia. 



Oxyopes bilineatus, sp. n. 



Length of an immature female, 2 lines. 



Several very young examples of this species were found near 

 Cairo, in a similar situation to that in which the last species was 

 found. I feel no doubt that it is a distinct and probably undescribed 

 species, though in the immature condition this is not absolutely cer- 

 tain, Spiders varying sometimes very considerably in the young state. 



In general form and position of the eyes the present Spider is very 

 similar to O. alexandrinus. The abdomen is of a yellow-brown 

 colour, marked on the upperside with two very nearly parallel 

 longitudinal pale yellowish lines rather wide apart, and comprising 

 a broad brown elongate-oval band running the whole length of the 

 abdomen. The sides are entirely devoid of the oblicjue pale lines so 

 characteristic in 0. alexandrinus; nor are there any angular lines, or 

 chevrons, on the hinder half of the upperside of the abdomen. 



The cephalothorax is yellow, with three broad longitudinal brown 

 bands. 



Fam. Salticides. 



In recording and describing the species of this family found by 

 myself in Egypt, I have not attempted to place them in any syste- 

 matic consecutive order: the known species are placed first ; and 

 they are followed in each genus by the species considered to be new 

 to science. Few families of the Araneidea need a thorough revision 

 so much as the Salticides, especially with respect to the exotic 

 genera. The number of described species of the family is now so 

 great (upwards of one thousand) that their certain subdivision into 

 well marked genera becomes each year a more pressing necessity. 

 M. Eugene Simon has worked hard and successfully at the European 

 forms of this family ; and I am mainly indebted to him for the 

 determination of those found in Egypt. 



Gen. Ballus, Thor. 

 Ballus piger, sp. n. 

 Adult female, length 2 lines. 

 This Spider is very nearly allied to Ballus heterophthalmus, 



