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Show 220 REV. O. P. CAMBRIDGE O N [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 processes, one, at their fore extremity, being jet-black and of a somewhat T-like form. The falces are small, rather divergent, and similar in colour to the supercephalic eminence. The maxilla 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 maxillae 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 than 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, somewhat 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. A n adult example of each sex of this curious Spider was received in 1872 from M . Eugene Simon, by w h o m 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 |
