neio S/'iders from the C(iimroo7is. 2G3 



below, deeper in tint on the first and second than on tlie tliird 

 and fourth pairs, the scopulse ashy black ; abdomen blackish, 

 covered above with a coating of greyish hairs, laterally and 

 inferiorly with blood-red hairs ; some stripes of the same 

 colour on the dorsal surface ; the middle line of the ventral 

 surface occupied by a median black band, which gradually 

 expands anteriorly to the width of the epigastric area, which 

 is Islack. 



Carapace longitudinally flat above, as long as patellar tibia 

 of third leg, as protarsus of fourth, as tibia of first, as tarsus 

 and protarsus of second, longer tlian tarsus and protarsus ot 

 third. 



Vulva differing from that of C. scopulafu<f, Poc, from the 

 Benito River (P. Z. S. 1899, p. 871, pi. Ivii. fig. 25), in 

 being wider than long, fairly evenly oval transversely, though 

 with an anterior shallow emargination, and in having the 

 lateral uncate processes thinner and much less prominent. 



Measurements in millimetres. — Total length 29 ; length of 

 carapace 12, first leg 42, second 40, third 33, fourth 43. 



Loc. Efulen, in the Camaroons {G. L. Bates). 



Distinguishable by the brilliant red coloration of the under- 

 parts of the femora and abdomen. 



Ctenus Batesiiy sp. n. 



? .—As large as C. scopulatus, Poc. (P. Z. S. 1899, p. 871), 

 but much blacker in colour; no red hairs on face or man- 

 dibles; legs uniformly dusky except for some coppery hairs 

 at the extremities above ; abdomen almost entirely black 

 above, laterally, and below. 



Mandibles sparsely hairy, highly polished, and blue-black. 



Eyes of anterior ocular triangle smaller than in C. scopu- 

 latus, and apparently further apart, the distance between the 

 anterior and posterior medians equalling a diameter of the 

 former. 



Vulva differing from that of C. scopulatus in that the emar- 

 gination for the lateral uncate process is nearer the middle of 

 the lateral border, the area in front of it being much shorter 

 in C. Batesii than in C. scopulatus. The vulva is more like 

 that of C. Kingsleyi, but is broader, both the anterior " neck " 

 and the posterior portion between the uncate processes being 

 less constricted. 



Measurements in millimetres. — Total length 31 j length of 

 carapace 15, first leg 49, second 45, third 37, fourth 48. 



Loc. Efulen, in the Camaroons {O. L. Bates). 



The females of the five large West-African species of 



19'- 



