328 ]\Ir. R. I. Pocock on 



tlic pamc as])ect as in C. corticosa, each is occupied by ati 

 irregular membranous sclerite, and they are separated down 

 tlie middle line by a strong but narrow longitudinal crest, 

 which anteriorly bifurcates, (t^ig- D, p. 322.) 



Total length 20 niillim. 



Loc. Enkeldoorn, Mashonaland (./. ff. Darling). 



The following table, in which a new specific character is 

 used, may facilitate the determination of the tropical African 

 members of this genus represented in the British Museum : — 



a. Femur of fourth leg- clothed beliind with a 



brush of unmodified hairs corticosa, sp. n. 



b. Femur of fourth leg clothed behind with a 



brush of thickened, flattened, or otherwise 



modified hairs. 



a^. Hairs of the brush not all alike, a few at 



the base of the femur much larger than 



the rest. 



a^. The bru,~h cnnsL-tliig- of many long and 



relatively .-lenilur hairs, the larger 



basal hairs broad and spatulate cohimnifer, nom. nov.* 



6^. The brush consisting of many very 

 short and broad closely packed hairs, 

 those at the base of the segment much 



longer and prone nodidosa, Poet 



b^. Hairs of the brush alike or approxi- 

 mately alike in form, those at the base 

 of the segment not noticeably larger than 

 the rest. 

 o\ Hairs of the brush serially set, very 

 broad, flat, with edge near the body 

 convex, and slender sharpened apex . . albescens, Poc.J 

 6^. Hairs of brush irregularly arranged, 

 close-set, more numerous, and much 

 finer. 

 a''. No basal white band on underside of 

 tibiae of second to fourth legs ; 

 hairs of femoral brush coarser .... femomUs, Thor.§ 

 5*. A broad white band on the base of 

 all the tibiae ; hairs of brush much 

 finer, 

 a'. Processes on vulva short, horny, 



and in contact in the middle line, sexcuspidata, Fabr. 



* New name for Ccsrodris turriyer, Poc. (P. Z. S. 1899, p. 857, pi. Ivii. 

 fig. 15), from the Benito River. The name " turriffera" was used by 

 Thorell for one of the Caflrarian varieties of the species he described a's 

 C. mifrcdis, Vins. (* Eugenies Resa,' Aranese, pp. 4-6j. 



t P. Z. S. 1898, p. 514, pi. xli. fig. 7. 



t P. Z. S. 1899, p. 856, pi. Ivii. fig. 16, from the Benito Pdver, Congo. 



§ Bih. Sv. Yet.-Akad. Handl. xxv. Afd. iv. no. 1, p, 63, from the 

 Cameruns, Oct. 1900,= C. an/osticfus, Poc. (P. Z. S. 1899, p. 855, pi. Iv. 

 tig. 5, May 1901), Benito River. The femora of this species vary in 

 colour from red to steel-blue. M. E. Simon first drew my attention to 

 this svuonvmv. 



