764 MB. R. I. pococK ON ETHIOPIAN SPIDERS. [June 15, 



Loc. Cameroons. $ type {J. M. C. Johnston) ; S {Mr. 

 Hie/gins). The Museum also has a mutilated example, apparently 

 of this species, from the Oil Eiver (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 \vhich the carapace was 30 mm. 

 long, the 1st leg was Q2 and the last 65 ; whereas the measurement 

 of the legs in gi^jas is considerably greater, though the carapace is 

 actually shorter. 



Hysterocrates crassipes, sp. n. (Plate XLl. fig. 4 c.) 



5 . 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 in 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 Jer/s 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: mm. : 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 mm. : 14-5 mm.). But in addition to 

 being longer and stouter, the legs of the 4th pair differ from those 

 of gii/as in having their protarsi and tarsi furnished with long erect 

 bristles. 



d . With longer, thinner legs than the $ ; 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 over- 

 lapping 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 



