1899.] A.'SB SPIDERS TROM TROPICAL WEST AFRICA. 843 



Sibange Farm, Gaboon, with which it may prove to be identical. 

 Karsch, however, sa_ys nothing about the colouring of P. hiUtnen, 

 nor about the spine armature of the legs. 



From P. {Harpaxoiheria) antilope Simon (Act. Soc. L. Bordeaux, 

 xlii. p. 414, 1889), from Tomby in the Congo, P. occidentalis also 

 differs, judging by the leg-measurements that Simon gives. For 

 example, the 4th leg in the type of P. antilojje exceeds the 1st by 

 about 10 mm. (63"2: 53'5), that is to say, by considerably more than 

 the length of the tarsus of either limb, whereas in P. occidentalis 

 the difference does not amount to more than half the tarsus. 



Phoneydsa bidextata, sp. n. (Plate LVI. fig. 11.) 



S . Colour : a uniform dull greyish-brown clothing of hairs on 

 the trunk and limbs, the long bristles on the legs and abdomen 

 reddish grey, the integument beneath the hairs nearly black ; a 

 narrow fringe of pale pinkish hairs at the distal end of the femora, 

 patellae, tibiae, and protarsi. 



Carapace longer than wide, its length slightly exceeding that of 

 patella, tibia, and tarsus of palp, equal to protarsus and femur of 

 4th leg, considerably less than patella and tibia of 4th leg, a little 

 greater than patella and tibia of 3rd leg, its width just about equal 

 to femur of 2nd. 



Legs long and slender (those of 1st pair absent), with two or three 

 spines at the apex of tibiae beneath, about 4 on apex of 2nd pro- 

 tarsus, and a row of about 8 on apex of 3rd and 4th protarsi; 4th 

 leg exceeding the 2nd by about two thirds of its protarsus, patella 

 and tibia of 2iid about equal to those of 4th, the tarsi about equal ; 

 tarsus of 4th, including claw, about equal to patella of 4th ; bristles 

 upon legs and abdomen hooked at their distal ends. Tibia of 2jalp 

 about three times as long as broad ; bulb of palpal organ subcircular 

 and furnished with two spines, the principal spine rather short, 

 stout, not filiform, furnished externally with two keels which pass 

 on to the bulb, the smaller spine in front of the larger, much 

 smaller than it and curved in the opposite direction. 



Measurements in millimetres. — Total length 4 1 ; length of carapace 

 23, width 20-5 ; length of palp 35, of 2nd leg 74, of 3rd 05, of 4th 

 80, patella and tibia of 4th 27 ; protarsus of 4th 23-5, tibia of 4th 

 18, tarsus 9. 



Loc. Benito Eiver (G. L. Bates). 



This species differs from all the known species of Phoneyusa 

 that are based upon male examples in the possession of a second 

 spiniform process on the bulb of the palpal organ. 



These species are P. (Harpaxotheria) gracilipes Simon, from the 

 Congo, and P. {Harpaxotheria) ectijpa Simon, from Abyssinia (Act. 

 Soc. L. Bordeaux, xlii. pp. 414-415) ; P. gregorii Pocock (Proc. 

 Zool. Soc. 1897, p. 760, pi. 43. fig. 6), from Masailand, and P. bettoni 

 Pocock (Proc. Zool. Soc. 1898, p. 503), from the area between 

 Mombasa and Uiranda. 



