592 REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. [Jlllie 20, 



the legs is 4, 2, 1, 3; and the position of the eyes is exactly like 

 that of T. oblongus. 



A single example was found on a low plant near Cairo. 



Thanatus elavus, sp. n. 



Adult female, length 2| lines. 



In size, colours, and general appearance this Spider is strikingly 

 like T. lineatipes ; the form, however, of the abdomen is a little 

 different, tapering more uniformly from the fore part to the spin- 

 ners ; the cephalothorax has two broad but indistinct lateral 

 longitudinal brownish bands, one on each side, leaving a marginal 

 band of the normal ground-colour on either side, of the same width ; 

 the legs are more or less thinly speckled with blackish specks, and 

 none of them have the black lines so characteristic in T. lineatipes. 



The form of the genital aperture also differs from that species ; 

 nothing, however, but a drawing of each would render the differences 

 of this aperture tangible for the purpose of specific determination. 



Four adult females were found on low plants in a marsh near 

 Alexandria. 



Thanatus flavescens, sp. n. 



Immature female, length 3 lines. 



Strikingly like both the foregoing species in colours, this one may be 

 at once distinguished by the more attenuated cylindrical form of the 

 abdomen, and consequently its greater length * the abdomen tapers 

 a little, and very gradually, to the hinder extremity, it is of a clear 

 straw-yellow colour, and has the faintest indication of a longitudinal 

 central stripe throughout the upperside, formed by two gradually 

 converging dusky broken lines ; the cephalothorax is yellow, slightly 

 speckled with black, chiefly on the caput ; the legs are the same in rela- 

 tive length, and have only a very faint indication of black speckling : 

 the two posterior eyes (the laterals of the hinder row) are in the 

 present species further removed backwards from the rest than in the 

 two former, the central pair of the same row being also smaller. 



An immature male and female were found on a low bush near 

 Cairo. 



Gen. Philodromus, Walck. 



Philodromus adjacens, sp. n. (Plate LIX. fig. 11.) 



Philodromus fabricii, Cambr. Spid. Palest. & Syr., P. Z. S. 1872, 

 p. 310 (exclude reference to Savigny). 



Adult male, length lg line ; adult female, 2| lines. 



Subsequent examination and comparison have led me to believe 

 that the Spider recorded (loc. cit. supra) is distinct from Philo- 

 dromus fabricii, Sav. et Aud.j differing from it in the more truncate 

 termination of the very conspicuous dark marking on the fore half 

 of the upperside of the abdomen, as well as in the relative length 

 of the legs ; in the present Spider this is 4, 3, 2, 1, while in P. fabricii 

 it is 4, 2, 3, 1. The structure, however, of the palpal organs of the 

 male is not very unlike the figure shown in Savigny's work. 



