324 ]\rr. R. I. Pocock on 



abdomen; the uiidcnsido of the trunk a little darker tlian the 

 n|iper ; the underside of the posterior bifid prominence 

 yellowish. 



Carapace of the same shape apparently as in J), hiihalus, 

 Sira., with an angular horn over the eyes. Femur of first 

 and second legs subequal^ the former basally expanded and 

 geniculate on the inner side, to fit against the side of the 

 head. Abdomen elongate, with a pair of large tubercles in 

 front of the middle and a bifid posterior extremity. 



Vulva consisting of a rounded eminence, with convex 

 anterior and straight posterior border, impressed posteriorly 

 with a pair of obliquely diverging pits, separated by a septum, 

 narrow in front and broad behind. 



Measurements in millimetres. — Total length 25 ; length of 

 carapace 8, width 5 ; length of abdomen 18, width 5; second 

 leg 43, third and fourth 22-23 ; femur of first 15. 



Log. Durban (6r. P. Htaunton). 



This species certainly differs from D. buhalus, Simon, 

 from Kilimanjaro, in the form of the vulva. This organ in 

 I), huhalus is described as flat and subquailrate. Moreover, 

 the sternum and legs are described as " luridi." 



This new species may prove to be the femnleof D. cijllndricus ^ 

 which was also captured at Durban. If the differences 

 pointed out between the males and females of Dinopis in the 

 subjoined table prove to be merely sexual, it seems probable 

 that the synonymy of some of the iVfrican species will work 

 out as follows : — 



D. bubo, Brit. Cap., (S, = D. Anchietie, Biit. Cap., ? ; from 



Angola. 

 I), cornigera^ Gerst., ^^=0. biibalus, Sim., ? ; from 



German East Africa. 

 D. cglindricus, Poc, S y = D, Staiinioni, Poc, ? ; from 



Natal. 



Pending tlie settlement of this supposition the tropical 

 African species of this genus seem to be separable by the 

 following characters : — 



a. 2 .—Carapace without wliite bands ; abdomen 

 with a large tubercle on each side near the 

 middle. 

 a^. Femur of first leg without anterior basal 



enlargement (no frontal horns) aspedans, Poc. 



b\ Femur of tirst leg with a large basal enlarge- 

 ment. 



