1897.] ME. R. I. POCOCK ON ETHIOPIAN^ SPIDBBS. 727 



than most of the genera of Ctenizinse. It has, moreover, only a 

 pair of submedian sternal sigilla, like, for example, Pachylomerus. 

 And in the second place, though Eriodon possesses the nearly square 

 maxilla, its sternal impressions or sigilla are quite different from 

 those of Actinojnis, numbering 4 pairs placed about halfway 

 between the centre and the margin, increasing iu size from before 

 backwards, the anterior pair, representing apparently those that 

 define the labium in Stasimopus, and corresponding to the palp, 

 being small, close to the middle line and behind the base of the 

 labium; whereas in Acthiopus the sternal sigilla are indistinct, 

 their inner extremities more or less running together to form a 

 central depression on the sternum. Setting aside for the moment, 

 however, the question as to the relationship between these two 

 genera, it will, I think, be quite safe to remove Stasimopus froia 

 their vicinity and leave it in the subfamily Cfenizince. 



Subfamily Ctenizinse. 



Genus Stasimopus, Simon, 

 Hist. Nat. Araignees, i. p, 81 (1892). 

 This genus was based upon the species described by C. Koch as 

 Actinojyus caffrus from S. Africa (Die Arachn. ix. p. 98). It 

 contains the following three forms : — 



Stasimopus caffrus, C. Koch, Die Arachnideu, ix. p. 98, fig. 751 



(described as Actinopus caffrus from the Cape of Good 



Hope). 

 Stasimopus rufidens, Ausserer, Verb. z.-b. Ges. "Wien, 1871, 



p. 160 (described as Ci/rtocarenum rufidens from Natal). 

 Stasimopus natalensis, O. P. Cambridge, P. Z. S. 1889, p. 35, 



pi. ii. fig. 1 (described as Pachylomerus natalensis from 



Natal). 



Unfortunately the figures published by C. Koch and Mr. 

 Cambridge are so discrepant that no one would suppose them to 

 represent the same genus, the width of the carapace in caffrus 

 being only equal to the length of the cephalic area, whereas in 

 natalensis and the specimens of the genus known to me the width 

 is nearly as great as the length. Nevertheless there is, I thiuk, 

 but little doubt that the two are congeneric, very possibly co- 

 specific. 



Moreover, on geographical grounds it seems probable that 

 rufidens is also co-specific with natalensis, and there is nothing in 

 the descriptions to discredit such a belief. It may consequently 

 be assumed, at all events provisionally, that this is the case. 



Stasimopus eupidbns (Ausserer). 



? Syn. Actinopus caffrus, C. Koch, loc. cit. 



„ Ci/rtocarenum rufidens, Ausserer, loc. cit. 



„ Pachylomerus natalensis, Cambridge, loc. cit. 

 The British Museum possesses a single adult $ of this species, 



