On some new African Theraphosoid Spiders. 48D 



rather belongs to the so called Silico-Flagellafc'E. I have 

 foiiiifi this same form in California ami in the Mediterranean. 



EXPLANATION OF PLATE XVL 



Fiffs. 1, 2. Ch'Ctoceroi incurvm, Bail. Endocysts. 



Fiffs. 3-7. C/uetoceros cftinch(P, yiev. Eniocysts. (Fig. in a somewhat 



oblique position ; tig. 7 in profile.) 

 Fiff. 8. Skeleionema costatum, var. spirali", Mer. 

 Hgs. 9, 10. Intermediate forms between /iid'ltilph-a [Triceraliuin) aHcr- 



nans, ]iail., and varietai variabilis, Brigfitw. The puncta are not, 



represented. 

 Fiys. \\,\'2. Ai<teromphalu% malleus (mallei/onnig), var. pacifica, Mer. 



POO 



1 ■ 

 Fig. 13. Asteromphalus malleus (millei/orm-'s), Wullich, reproducing the 



figure of ^^■aliich. *^. 



Fig. 14. Naviciila Ilennediji, var. sttbrostrala. Mer. 

 Fig. 15. Another variety of X. Hennedyi from Tahiti. 

 Figs, 10-21. Spennatojonia antiqui, Lend. & Fortm. 



LXVI. — Some new African l^heraphosoid Spiders in the 

 British Museum. By R. I. POCOCK. 



Family Theraphosidae. 

 Subfamily EvMEyoPHORiNM, Poc. 



Genus Hysterocrates, Sim. 



A few weeks ago the Trustees of the Briti-ih Museum 

 acquired by purchase seven large Theraphosoid spiders which 

 were captured on the island of St. 'J'homas in the Gulf of 

 Guinea, and were offered to the 15ritish o^Iuseum under the 

 name Selenocosmia Greeffi of Karsch. Who may be respon- 

 sible for the identification I know not, but examination 

 showed the specimens to be referable to three perfectly distinct 

 species, neither of which is identical with the species described 

 by Karsch, if any reliance is to be placed on the description of 

 the latter. 



The species may be described as follows : — 



Hysterocrates didi/mus, sp. n. 



? I'honei/ii^a Greeffi (Karach), Simon, Hist. Nat. AraigntVs, i. p. 1.53 

 (1802). 



5 . — Colour. Integument deep blackish brown, hairy 

 clothing a rich ruddy olive-brown, with paler tips to the 



