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Show 764 MR. R. I. POCOCK ON ETHIOPIAN SPIDERS. [June 15, Loc. Cameroons. 2 type (J. M. C. Johnston) ; 3 (Mr. Hlgglns). The Museum also has a mutilated example, apparently of this species, from the Oil Biver (H. H. Johnston). From Hysterocrates greefi, Karsch (Sitz. Ges. Nat. Marburg, 1884, p. 60), from the island of St. Thomas, this new species, as well as the others described in this paper, seems to differ in having considerably longer legs. Karsch, for instance, states that in a specimen of his species in which the carapace was 30 m m. long, the 1st leg was 62 and the last 65 ; whereas the measurement of the legs in glgas is considerably greater, though the carapace is actually shorter. HYSTEROCRATES CRASSIPES, sp. n. (Plate XLI. fig. 4 c.) 2. Allied to the preceding, but differing in the following particulars :- Colour paler, being of a greyish yellowish-brown. The width of the carapace is equal to the length of the posterior femur, and the length is distinctly less than the length of the patella and tibia of the same leg ; the cephalic region is lower, the fovea shallower, and the area immediately iu front of it not elevated; the ocular tubercle is a little longer, the anterior line of eyes more procurved, the posterior row more recurved. In the mandible the curvature of the front and upper surfaces is more abrupt. The legs are not of the same relative length, the 4th exceeding the 1st by more than the length of its tarsus ; the patella and tibia of 4th are very distinctly longer than those of the 1st (24 m m . : 21 mm.) ; the patella and tibia are as wide as the distal end of the femur; the width and height of the patella are about equal and exceed half its length; the tibia is convex above, its height and width are about equal, and considerably more than one-third of its length ; the protarsus is only longer than the tibia by the merest fraction (15 m m . : 14*5 m m . ) . But in addition to being longer and stouter, the legs of the 4th pair differ from those of glgas in having their protarsi and tarsi furnished with long erect bristles. 3. With longer, thinner legs than the 5 ; mandibles smaller, but with the granules more prominent. There is no spur on the tibia of the 1st leg; the palp is short and weak, scarcely overlapping the patella of the 1st leg ; the tarsus is short, truncate, and biscopulate; the bulb is remarkable, being polished and oval, with the spine, which is long, slender, and slightly curved at its distal end, rising on the outer side of the bulb, close to the base, the base of the bulb posteriorly bears also a tooth and outside this a short carina. The width of the carapace is much less than the length of the posterior femur, and the length is much less than that of the patella and tibia of the 1st leg, which are only a little less than the corresponding segments of the 4th; the width of the 4th patella is less than half its length, and that of the tibia is about |
