1897.] MR. E. I, POCOCK ON BTHIOPIAST SPIDERS. 765 



one-third o£ its length ; the 4th protarsus is longer than the 

 4th tibia. 



Measurements in millimetres. — 2 . Total length 47 : carapace, 

 length 23, width 19 ; 1st leg56'5, 2nd 49, 3rd 45, 4th 67 ; patella 

 and tibia of 1st 22, of 4th 24 ; tibia of 4th 14-4, width 5*8. 



cJ . Carapace, length 19*5, 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. 



Loe. 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 crassipes, 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 crassipes may be 

 recognized by the features pointed out in the diagnosis. 



Htsteroceates laticeps, sp. n. (Plate XLI. figs. 4-4 h.) 



d . Closely related to the male of H. gigas, but with the cara- 

 pace noticeably broader, especially in front ; the width, for 

 example, is equal to the distance between the posterior border 

 and the ocular tubercle, whereas in gigas it falls short of that 

 distance by about 1 mm. ; 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. gigas. 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 cara- 

 pace 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 Kingsley). 



A specimen which I identify as the female of tliis 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. crassipes and H. gigas : — 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, diifers specifically from that of 

 H. crassipes in its thinner hind legs, and from H. gigas 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 



