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Show 1897.] MR. R. I. POOOCK ON ETHIOPIAN SPIDERS. 765 one-third of its length ; the 4th protarsus is longer than the 4th tibia. Measurements In millimetres.- 2 • Total length 47 ; carapace, length 23, width 19 ; 1st leg 56-5, 2nd 49, 3rd 45, 4th 67 ; patella and tibia of 1st 22, of 4th 24 ; tibia of 4th 14-4, width 5'8. 3. Carapace, length 19*o, width 17; abdomen, length 19*5, width 11-5; 1st leg 57, 2nd 52-5, 3rd 46, 4th 65; patella and tibia of 1st 22, of 4th 23; length of 4th tibia 14-5, width 4-5. Loc. Cameroons (H. H. Johnston). In the thickness of its posterior legs this species approaches H. greshoffi, Simon (Ann. Soc. Ent. France, 1891, p. 298), the type of the genus, from the Upper Congo; but certainly differs in that the height of the tibia is less than that of the femur, and but little excels that of the patella, whereas in greshoffi, though the height of the tibia, as in crasslpes, is more than one-third of its length, it is at the same time much greater than the height of the patella or femur. From the other species described in this paper crasslpes may be recognized by the features pointed out in the diagnosis. HYSTEROCRATES LATICEPS, sp. n. (Plate XLI. figs. 4-4 6.) 3. Closely related to the male of H. glgas, but wdth the carapace noticeably broader, especially in front; the width, for example, is equal to the distance between the posterior border and the ocular tubercle, whereas in glgas it falls short of that distance by about 1 m m . ; again, the width of the head across the cephalic sulci exceeds the distance between the fovea and the tubercle by half the length of the latter, the two distances being just equal in H. glgas. The posterior leg, too, is thinner (cf. measurements of tibia). And lastly, in the palpal organ the bulb is smaller and the spine less curved. Measurements In millimetres. Total length 46; length of carapace 22, width 20-5; width across cephalic sulci 13; length of 1st leg 71, of 2nd 60, of 3rd 55, of 4th 74-5 ; patella and tibia of 1st 28, of 4th 26; tibia of 4th 16-5 in length, 4-5 in width. Loc. Old Calabar. A single male example (Miss Klngsley). A specimen which I identify as the female of this species was obtained by Dr. Alexander Smith in Old Calabar more than 20 years ago. It gives the following measurements for comparison with those of the females of H. crasslpes and H. glgas:-Total length 44; length of carapace 21, width 18*6 ; length of 1st leg 57, of 2nd 50, of 3rd 47, of 4th 63; patella and tibia of 1st 22, of 4th 22; tibia of 4th 13, width 4. These measurements show that the female of this species, assuming it to be rightly sexed, differs specifically from that of H. crasslpes in its thinner hind legs, and from H. glgas in its much shorter carapace, the length of which is distinctly less than that of the protarsus and tarsus of the 4th, as well as the tibia and pro- PROC. ZOOL. Soc-1897, No. L. 50 |
