1898.] BY MB,. C. S. BETTON IX BRITISH EAST AFRICA. 503 



of 4th 37-5 ; patella and tibia of 1st 11-5, of 4th 12 ; protarsus of 

 4th 10. 



Loc. Mbnyuni. A single male example. 



Much smaller than F. vorax Poc. (P. Z. S. 1897, p. 752), with 

 relatively much longer legs &c. Por example in vorax the cara- 

 pace is just about as long as the patella and tibia of the 4th legs, 

 and its width is greater than the protarsus of the 4th ; there is, 

 moreover, no spine upon the protarsus of the 1st, and tlie tibia is 

 not thick as in sjjinifer. 



The males of the three known species of Pterinochilns may be 

 distinguished as follows : — - 



a. Protarsus of 1st leg with a distinct tuberculiform tooth 



below near the apex, tibia of Ist leg thicker than the 

 femur ; legs longer ; carapace less than patella and 

 tibia of 2nd leg and less than 4tb protarsas, &c spinifer, sp. n. 



b. Protarsus of 1st leg without tuberculiform tooth, tibia of 



1st not thicker than its femur; legs shorter; carapace 



exceeding patella and tibia of 2nd leg, and much longer 



than protarsus of 4lh. 



a'. Of large size (carapace about 16 mm.) ; protarsus of 



1st leg basally sinuate ; carapace much longer than 



patella, tibia, and tarsus of palp ; spine of palpal organ 



simple and attenuate vorax Poc. 



b'. Of small size (carapace 10 mm.) ; protarsus of 1st leg 

 straight ; carnpace not longer than patella, tibia, and 

 tarsus of palp ; spine of paljjal organ with a strong 

 upstanding crest and a blunt point niffro/ulvus Poc.^ 



Subfamily EuMENOPHOEiNJi. 

 Eumenophorince, Pocock, Proc. Zool. Soc. 1897, p. 773. 



Genus Phoneyusa Karsch. 

 Phoneyusa bettosi sp. n. 



Closely allied to P. gregorii, Pocock (P. Z. S. 1897, p. 761). 



Hairy coating a bright reddish brown, with conspicuous pale 

 narrow tufts at the tips of femur, patella, tibia, and protarsus of 

 legs ; the lines on the legs reddish. 



Width of carapace more than three-fourths of its length ; its 

 length only a little greater than that of patella and tibia of palp, 

 equal to length of patella and tibia of 2nd leg, a little less than 

 protarsus and tarsus of 1st or 2nd, these two being about equal ; 

 ver)'^ slightly exceeding 4th protarsus ; its width slightly exceeding 

 tibia and tarsus of palp and a little less than patella and tibia of 

 3rd leg ; distance between fovea and anterior edge scarcely equal 

 to 3rd protarsus, and slightly exceeding protarsus of 1st and 2nd. 



Palp when extended reaching nearly to the apex of tibia of 

 1st leg, unspined, its tibia about four times as long as broad, a 

 trifle longer than that of the 2nd leg, nearly twice as long as 

 patella of palp and three times as long as its tarsus ; the bulb of 

 the same form as in gregorii. 



^ Poc. Ann. & Mag. Nat. Hist. (7) i. p. 317. From the TransTaal. 



