220 - - REY. O. P. CAMBRIDGE ON [ Mar. 16, 
(in a single longitudinal row) of graduated lengths and strength, 
the longest and strongest being furthest from the fore extremity of 
the joint ; some short bristles continue this row of spines towards the 
hinder extremity: these spines are very characteristic, being unusual 
in Spiders of this group of the genus. 
The palpi are moderate in length and strength, and similar in 
colour to the legs. The cubital joint is slightly bent and rather 
clavate, or larger at its fore than at its hinder extremity; the radial 
joint is shorter and less stout than’ the cubital, and has its fore 
extremity on the upperside produced into an apophysis with a forked 
or bifid termination, the outer limb of the bifid part being of a 
tapering form, prominent, and very slightly but sharply hooked at 
its point, while the inner limb is shorter and depressed (it requires 
some care in examination to see this bifid portion correctly) ; the 
digital joint is of moderate size, and roundish oval form ; the palpal 
organs are well developed and complex, with various corneous pro- 
cesses, one, at their fore extremity, being jet-black and of a some- 
what T-like form. 
The falces are small, rather‘divergent, and similar in colour to 
the supercephalic eminence. 
The mazille and labium are of normal character, and, with the 
sternum, which is very glossy and convex, of a dark yellow-brown 
colour—the extremities of the maxillee and labium being pale, and 
the sternum being the deepest in hue, and furnished with a few long 
bristle-like hairs. 
The abdomen is large, much longer tban the cephalothorax, 
moderately convex above, and of a jet-black colour ; its surface 
appeared to be, on the lower part of the sides and behind, some- 
what longitudinally rugulose ; it is clothed very sparingly with short 
yellowish hairs. 
The female resembles the male in colours; but the caput is much 
less elevated, and the supercephalic eminence is represented by a 
very slight occipital gibbosity. The legs of the first and second 
pairs have the same characteristic spines on the femoral joints ; 
there are also other slender erect spines on the uppersides of the 
genual and tibial joints of all the legs; the genital aperture is of 
characteristic form, presenting, when looked at from the front, a 
double-arched aperture. 
An adult example of each sex of this curious Spider was received 
in 1872 from M. Eugéne Simon, by whom it was found at Aranjuez, 
in Spain. 
ERIGONE JusTA, sp. n. (Plate XXIX. fig. 26.) 
Adult male, length 1 line. 
The cephalothorax of this Spider is dark yellowish brown, with 
some rather irregular, vein-like, converging black markings on the 
thorax, the lower part of whose sides have a roughened or somewhat 
granular appearance; the fore part of the caput is elevated into a 
single eminence, of a somewhat obtuse subconical form, of moderate 
height, the summit being clothed with short bristly hairs directed 
