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Show 684 REV. O. P. CAMBRIDGE ON A NEW SPIDER. [J The legs are strong, of moderate length, and do not vary greatly in that respect. Those of the first and fourth pairs do not differ much, the fourth being rather the longest, and the third shortest. They are similar in colour to the cephalothorax, densely pubescent, and clothed with long, coarse bristly hairs of a greyish-foxy hue ; there are also spines beneath the metatarsi and tibiae, but concealed by the density of the hairs ; beneath the tarsi and metatarsi is a dense scopula. ' Terminal claws 2, almost concealed, strong, curved, and their hinder half furnished beneath with a few small denticula-tions. It is possible that these denticulations are not uniform in all the legs ; those which I examined minutely were of the second pair. The palpi are strong, and similar in colour and clothing to the legs, with a dense scopula beneath the digital joint. The falces are very strong and massive, and similar to the legs in colour and clothing. The maxilla? are strong, cylindrical, with a strongish subcorneal prominence at their extremity on the inner side. The labium is short, prominent at its apex, the transverse line of which is hollow. A space at the base, on the inner side, of each maxilla, as well as at the apex of the labium, is densely clothed with short, nearly cylindrical, round-topped tubercles of uniform height. Sternum small, oval, hollowed out at the fore extremity, clothed and coloured like the legs. Abdomen short, oval, in colour and clothing like the legs; but the coarse bristly hairs are longer, stronger, and of a more foxy, or dull rusty-red dish hue. Spinners of superior pair tolerably long and strong, 3-jointed and upturned. From the cast skin of the example described, the spinners would appear to have been considerably larger before its ecdysis ; possibly they may have shrivelled, as the Spider seems to have died soon after that operation. Two males received from Brazil, and which I believe to be of the same species as the female above described, have the coarse bristly hairy clothing of the legs &c. of a brighter reddish hue. Beneath the fore extremity of the tibiae of the first pair of legs is a long, strong, curved, corneous, obtusely-pointed process directed forwards. The palpi of these males are tolerably long, the radial joint longer than the cubital, the digital joint short. The palpal organs consist of a basal bulb, produced into a long, strong, twisted, somewhat corkscrew- shaped process, gradually lessening towards its extremity, and ending rather abruptly in a point, near which is another minute point or prominence. The dimensions of the male are:-length 17 lines, to the end of the falces 19$; greatest expanse of the legs 5 inches 10| lines. The cephalothorax is broader in proportion to its length than in the female, though rather narrower at the fore extremity, a peculiarity observable in the males of some other species also. Hab. Of the 5, Bahia; of the two «?, Brazil. P.S. Since the above was in the press the Secretary of the Society has kindly sent to me for examination two other specimens, apparently |