2G4 REV. O. P. CAMBRIDGE ON THE [Feb. 20, 



prominent, having some large and variously formed corneous pro- 

 cesses connected with them. 



Several examples of both sexes, but the males immature, were 

 found beneath stones and among debris of various kinds on the 

 plains of the Jordan. In similar situations I also found examples of 

 both sexes, both adult and immature, at Alexandria (Egypt) in 1864. 



Amaurobius indistinctus, sp. nov. 



Female adult, length nearly 2$ lines. 



The whole of the fore part of this Spider, both above and below, 

 is of a yellow colour, the legs and palpi being rather paler than the 

 cephalothorax. The legs are neither very long nor strong ; they are 

 furnished with hairs, long bristles, and a few longish fine spines, 

 and have calamistra on the metatarsi of the fourth pair. The eyes 

 are nearly equal in size, and are more closely grouped than in either 

 of the foregoing; species ; those of the foremost row are nearly equi- 

 distant from each other, the space between the two centrals being 

 rather greater than that between each and the lateral next to it ; 

 those of the hinder row are also relatively in a similar position ; 

 those of each lateral pair are near together but not contiguous ; and 

 the four central eyes form very nearly a square. The fahes are mo- 

 derately long, strong, and considerably and roundly prominent near 

 their base in front. The abdomen is oval, more than usually convex 

 above, and bluff and rounded behind ; its fere part projects over the 

 spinners, the supernumerary one of which is apparently undivided ; 

 the colour of the abdomen is a pale yellowish whitey-brown, with a 

 row of paler and rather oblique, short, strong, but indistinct bars 

 along its upperside. 



This obscure Spider appears to belong to the genus Amaurobius, 

 though in some respects it is of rather abnormal character ; it was 

 found underneath a stone near Jericho. 



Amaurobius ruficeps, sp. nov. 



Male adult, length 2\ lines. 



This Spider may be at once distinguished from its near allies {A. 

 simplex and A. distinctus) by the colour of the cephalothorax, which 

 is a bright yellowish red, the femora of the first two pairs of legs 

 being also strongly tinged with the same ; the remainder of the legs, 

 as also the falces (which are prominent at their base in front), the 

 maxil/te, labium, and sternum are of a more or less dark brown 

 tinged with yellow ; the legs are furnished, but not conspicuously, 

 with hairs and fine spines ; they are rather long and strong ; and their 

 relative length is 1, 4, 2, 3. 



The palpi bear a general similarity to those of A. distinctus; but 

 the radial joint has far more remarkable and irregular prominences 

 at its extremity, and the digital joint is also larger and of a different 

 form ; it differs likewise in the structure of the palpal organs. 



The abdomen is dull black with a silky hue. An inframamillary 

 organ is present, but no calamistra. 



A single adult male was found under a stone near Cana-el-Jelil. 



