846 MR. R. I. POCOOK ON SCORPIONS, PEDIPALPS, [Nov. 14, 



? Heterothele gabonensis (Lucas). 



Mygale gahonensis, Lucas, Arch. Ent. 1858, p. 382. 



? Dijdura longipalpis, Karsch, Zeits. Naturwdss. (3) iv. p. 564. 



Two female specimens of a species referable to Heterothele, 

 obtained by Gr. L. Bates on the Benito Eiver, are regarded as 

 probably identical with Mygale gahonensis, Lucas. 



Family CTENiziDiE. 

 Genus Aoanthodon, Guer. 



ACANTHODON ANGUSTICEPS, Sp. n. 



$ . Very closely resembling, both in size and spine-armature, 

 &c., A. lacustris, Pocock (Proc. Zool. Soc. 1897, p. 731, pi. xli. 

 fig. 7), from Lake Tanganyika. The two species may be separated 

 as follows : — 



a. Carapace broader as compared with its length (7'8 : 9), 

 width equal to the distance between the posterior 

 border and the anterior border of the ocular cluster ; 

 the two ocular tubercles higher, the area behind the 

 posterior considerably more depressed owing to the 

 greater elevation of the cephalic prominence ; ster- 

 num wider as compared with its length (4'8 : 5) ; legs 

 longer, length of 1st 18-8, of 4th 23, tarsus and pro- 

 tarsus of 4th 8 ; palp from base of femur 16, its three 

 distal segments 9-8 lacustris Poc. 



h. Carapace narrower, its width as compared with its length 

 being 6'8 : 9, width equal to the length between the 

 posterior border and posterior edge of the ocular 

 tubercle ; ocular tubercle lower, but little elevated, 

 area behind the ocular cluster but little depressed ; 

 sternum narrower, very distinctly narrower than long 

 (4:5); legs shorter, length of 1st 17, of 4th 22, 

 tarsus and protarsus of 4th 7 ; of palp 15, its three 

 distal segments 9 anffusticeps, STp. n. 



Slight differences also are observable in the eyes, the posterior 

 medians being a little closer together, more directly behind the 

 medians and a little farther from the laterals. I have very little 

 confidence, however, in the taxonomic value of shght apparent 

 differences in the size and relative positions of these organs. 



Log. Benito River (G.L. Bates). 



A single female example was procured. 



Araohnomorph^. 

 Family Dinopid^. 



Genus Dinopis Macleay. 

 DiNOPis bubo Brit. Capello. 



Dinopis bubo, Brit. Capello, Mem. Ac. Sci. Lisboa, (3) iv. pt. 1 : 

 Arachnideos etc. p. 16, pi. ii. fig. 3, 



