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Show 1883.] REV. O. P. CAMBRIDGE ON NEW SPIDERS. 359 anterior surface is flattish, with an exterior angular margin or edge, and their colour is similar to that of the cephalothorax. The colour of the maxillae and labium is like that of the legs, while that of the sternum resembles the cephalothorax. The palpi are short and strong ; the radial joint is a little shorter than the cubital, and its outer side has two strong obtuse apophyses ; the anterior is the longest, prominent, and somewhat bent; from some points of view these apophyses look like one large bifid projection. The digital joint is large and oviform ; the palpal organs are simple, with a strong corneous process, or spine, round the inner margin. The abdomen has its flattened upperside covered with a kind of coriaceous shield, of a deep blackish hue; around the margins are some short dull golden hairs (possibly these may originally have been more numerous and more widely spread over the surface) ; the sides are of a warm purplish brown, deeply and longitudinally rugu-lose, and the colour of the underside is similar. The spinners are very short and counter-sunk in a sort of pit or depression, beyond the margin of which they scarcely appear. An example of this Spider was given to me among those found in Caffraria by Mr. Mansel Weale. It is a very remarkable one, not only on account of its general form, which gives it some resemblance both to the Drassidae and Palpimanidae, but also in respect to the structure of the legs, especially the long tarsi, which are, as above noticed, scarcely divided from the metatarsi. CASTUROPODA, g. n. (Kaarwp, a beaver, ovpa, tail, iro^a, feet). Cephalothorax broad, rather longer than broad, only slightly convex above, broadly truncate in front, and considerably constricted laterally on the margins of the caput, the other normal indentations being obsolete. Eyes placed much as in Xysticus, but occupying a wider transverse area ; they are small and seated on tubercles ; the fore-laterals are largest, the four centrals very small, and form nearly a square, of which the posterior side is slightly longest; the hind-central eyes are the smallest. Legs moderately long, 2, 1,3, 4, the difference between 2 and 1 very slight. They are strong, especially those of the first and second pairs, whose anterior joints are of abnormal size. The form of the tarsi bears no small resemblance to a beaver's tail. The legs are furnished with short hairs only, those beneath the tarsi forming a scopula; the tarsi end with two curved (and apparently nonpectinated) claws. Falces moderate in length, subconical, massive; but the fang is short and weak ; on the inner side of the anterior extremity of each falx is a short row of small but distinct denticulations regularly diminishing from the fore extremity. Palpi short, ending with a small curved claw. Maxilla long, straight, pointed at their extremity on the inner |