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Show 1896.] AND L I T T L E - K N O W N SPIDERS. 1007 than, the radial and cubital together, enlarging or clavate at the fore extremity, which ends with a small untoothed claw. Fakes short, moderately strong, straight, subcorneal. Maxillae rather long, straight; broadest and rather roundly truncated at their extremity, and obliquely on the inner corners. Labium broader than long ; apex rounded. Sternum longer than broad, its edges very strongly and distinctly emarginate, with prominent angular chitinous points running (when looked at from below) beneath the margin proper, to and between the bases of the coxse of the third and fourth pairs of legs; a very narrow stripe, also of a similar chitinous kind, runs backwards between the posterior coxae from the hinder point of the sternum. Abdomen connected with the cephalothorax by a long cylindrical pedicle running into a strong circular socket, which forms part of a large coriaceous plate including tbe spiracular opening and enclosing the covering of the genital aperture. The abdomen is of an elongate or oblong-oval form, broadest and well rounded behind, and slightly constricted transversely at the middle; spinners very small, compact, and enclosed in a round sheath-like socket. AETIUS DECOLLATUS, sp. n. (Plate LII. fig. 1.) Adult female length 4 lines. Cephalothorax black, with a short white pubescence on the sides of the thorax, and the greater part of the thorax bright yellowish red, leaving a broad, irregular, lateral black margin. Tbe surface is covered thickly with small tuberculous granulosities. Legs orange-yellow, the femora (excepting the anterior extremities, and a longish patch on the upperside of those of the fourth pair, which are reddish) being black, the genuae and tibiae of the fourth pair being also suffused with blackish. The femora are granulose. The spines beneath the tibiae and metatarsi of the first and second pairs are in a longitudinal series of 3 pairs on the tibiae and 2 pairs on the metatarsi. Palpi yellow ; the humeral joints suffused with blackish. Falces similar in colour to the cephalothorax. Maxillae and labium deep brown, tipped with a paler hue. Sternum dull orange-yellow. Abdomen and connecting pedicle black. On either side of the fore extremity of the upperside is a short, curved, orange-red stripe, the convexity of the curves directed outwards; at the posterior extremity of each stripe is a patch of white pubescence, with a similar transverse stripe of pubescence across the middle and down the sides, and several small spots of the same behind it, in a central row to the spinners, just above which is a tuft of longish white hairs; the fore extremity also of the abdomen is clothed thinly with white pubescence, and there is a lateral slightly oblique stripe of the same halfway between the con- PROC ZOOL. Soc-1896, No. LXV. 65 |