422 



This spider is allied to P. nigrita (p. 16), but is larger, and 

 the tarsi alone of the legs are paler than the other joints. 



The cephalo-thorax is deep blackish-brown ; the abdomen is of 

 duller and more sooty hue with a somewhat coppery, black- 

 brown, shining oval area at tho fore extremity of the upper side 

 of that of the male. The abdominal pubescence is of a somewhat 

 yollowish dull olive-green hue. The legs are similar in colour 

 to the cephalo-thorax, becoming, however, gradually paler 

 towards their extremities, which are pale reddish-brown. The 

 femora of the first pair, in both sexes, have an elongate-oval pale 

 patch on their outer sides. Relative length 4.1.2.3. 



The palpi are much like those of P. nigrita, but the digital 

 joint is larger. The radial apophysis is moderately long and 

 strong, tapering, curved, and divergent, its point is obtuse, but 

 tho extremity is rather abruptly diminished in size a little way 

 from the point. The palpal organs are of very simple structure, 

 not very prominent, and present no noticeable points or pro- 

 cesses. 



Tho female resembles the male in general character and 

 colours. The genital aperture most nearly resembles that of 

 Prosthesima longipes, 0. L. Koch, but its form is still noticeably 

 distinct, being more quadrate and of a larger size. 



A single example of each sex, found on Bloxworth Heath, in 

 May, 1877, have been hitherto confused with P. nigrita; and in 

 1876 I received an adult female (length 3 frd linos) from 

 Ventnor, in the Isle of Wight. 



PROSTHESIMA LONGIPES. 



Melanophora longipes, C. L. Koch, Die. Arachn., Fam. der 



Prassiden, p. 147, pi. vi., figs. 88 and 89. 



Prosthesima lonoipes, C. L. Koch, Cambr., Ann. and Mag. N. H. 



ser. 5, vol. iv., p. 209. 



Length of the male 2£ to 3 lines. Female rather larger. 



Although in general appearance this spider is very like, and 



is very likely to be mistaken for, some other species of this 



