1870.] REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. o9l 



ARTANES Ll'GENS, Sp. 11. 



An immature female of this Spider is rather smaller than those 

 just described of A. bigibba, and, although strikingly similar in 

 general form, colouring, and structure, differs from that species in 

 (apparently) the larger size of the eyes of the hinder row ; the legs, 

 also, are speckled with dark brown or blackish spots, the longitudinal 

 dark stripe on the fore femora being absent : the abdomen also has 

 scarcely any trace of the two gibbosities noticed in that species ; the 

 colour of the upperside is a clear greyish white, with a large oblong 

 somewhat rectangular black area reaching from the fore margin to 

 about two thirds of the way to the spinners ; this black figure is 

 rather constricted in the middle, and is closely followed towards the 

 spinners by a transverse, slightly angular stripe, or chevron, close 

 behind which is a single central black spot ; on either side, close to 

 the spinners, is a short black marginal stripe ; the underside is 

 unicolorous, and of a dull greyish white hue. 



A single example of this Spider was found near Alexandria. 

 Future researches alone will prove whether or not it is only an 

 abnormally coloured example of A. bigibba ; at present I consider 

 it to be of a distinct though nearly allied species. 



Gen. Thanatus, C. Koch. 

 Thanatus albini. 



Phi/odromus albini, Sav. et Aud., Egypte, pi. vi. fig. 4. 

 Adult examples of both sexes of this Spider were found in various 

 parts of Egypt, among low herbage and running on bare spots. 



Thanatus lineatipes, sp. n. 



Adult female, length 3 lines. 



This Spider belongs to the group typified by T. oblongus, upon 

 which M. Simon has founded a separate genus, Tibellus. So far 

 as I can see, the chief, if not the only, valid distinction from Tha- 

 natus is the elongate narrow abdomen — which seems scarcely enough 

 for the construction of a new genus, although a convenient character 

 for the separation of a group within the genus Thanatus. 



The whole of the fore part of the present Spider is pale yellow. 

 The legs are furnished with a few fine spines ; and the femora of the 

 first and second pairs are thinly spotted with minute blackish specks ; 

 the tibiae and metatarsi of the first, second, and third pairs are 

 marked on the hinder sides with a single longitudinal black line, 

 while the same joints of the fourth pair have a black line along both 

 the fore and hinder sides. The palpi are immaculate. 



The abdomen is of an elongate oval form, but not so narrow as 

 that of T. oblongus ; it is of a pale yellowish colour, closely and 

 uniformly covered with yellow-white cretaceous spots, having only a 

 pale dull-coloured elongate tapering central marking along the middle 

 of the fore half on the upperside ; from this marking there issue 

 several fine oblique lines of a similar colour. The relative length of 



30* 



