BY W. J. RAINBOW. 345 



Genus Xysticus, C. Koch. 

 39. Xysticus obscurus, sp.nov. 



(Plate VII., fig. 9.) 



9. Cephalothorax 1-5 mm. long, 1-5 mm. broad 3 abdomen 

 2'3 mm. long, 1"7 mm. broad. 



Cephalothorax as broad as it is long, convex, smooth, dark 

 brown, glossy. Caput obtusely truncated in front, sparingly 

 clothed with short hairs; slightly depressed between the four 

 median eyes. Clypeus broad, arched, sparingly clothed with 

 short hairs. JSLarcjinal hand narrow. 



Eyes black, arranged in two recurved rows; each eye is widely 

 separated from its neighbour, equidistant, and the four comprising 

 the median group are much the smallest of the series, and are so 

 arranged as to form a trapezium. 



Legs strong; the first and second pairs are much the longest, 

 strongest, and darkest in colour; the trochanters are dark and 

 similar in colouration to the cephalothorax; the patella of each is 

 long, strong, yellow-brown above and at the base, but dark brown 

 at the sides and extremity; the femoral joints, tibite, and meta- 

 tarsi are each yellow-brown with a broad, dark, median annula- 

 tion; they are armed with long, strong, dark brown spines, and 

 clothed with long, coarse, dark hairs; the third and fourth pairs 

 are yellowish, with dark brown annulations at the joints, but 

 similar in clothing and armature to the anterior pairs; tarsal 

 claws long, strong, curved, and armed with small teeth. Relative 

 lengths : 1 = 2, 4, 3. 



Palpi moderately long, strong, and similar in colour and 

 armature to the legs; the first two joints are pale yellowish, the 

 remainder reddish-brown. 



Falces dark brown, glossy, moderately long, powerful, arched. 



MaxillcB long, dark brown, arched, inclining inwards. 



Labium concolorous, long, coniform, arched, rounded off at 

 apex. 



