430 Mr. R. I. Pocock on East-African Scorpions. 



the basal segments of the tail being an exceedingly deep red- 

 brown, while the trunk is nearly black above. In addition 

 to this the granulation is everywhere coarser, and the keels on 

 the tergites, tail, and chelge much stronger, the finger-keel on 

 the hand standing up as a very conspicuous crest. Total 

 length 62 millim., of carapace 7, of tail 37. Tail moderately 

 robust, slightly attenuate posteriorly. 



Two female examples from Rio del Rey [H. H. Johnston). 



The British Museum also has an example of a Bahycurus, 

 resembling, though not quite identical with, the Cette Cama 

 form, from the mouth of the Loango, north of the Congo 

 {H. L. Duggan). 



Synopsis of the Species contained in the British Museum*. 



a. The bracliium of tlie chela strongly infuscate, con- 



trasting forcibly with the paler red or yellow 

 colour of the niauus ; the finger-keel on the 

 hand visible in the $ (though sometimes ab- 

 sent in the cJ , as, for instance, in the type of 

 B. Kirkii) ; median eyes very large ; an enlarged 

 tooth on the middle of the inner side of the long 

 basal series of the middle row on the digit. 

 a^. Colour of trunk a uniform deep brownish black; 



brachium the same deep colour as the terga ; 



hands, humerus, and legs a uniform deep red ; 



keel on the hand strong and finely granular ; 



gi-anulation and keeling of the trunk, limbs, 



and tail coarser Johnstonii, sp. n. 



b^. Colour of trunk paler, variegated ; terga 



blackish at the sides and along the median 



keel, pale yellowish red elsewhere ; brachium 



(and sometimes humerus also) infuscate ; legs 



yellow, variegated with blackish spots ; lower 



surface and hand pale yellow ; granulation 



and keels finer Biittneri, Karsch. 



b. Chelse (with the exception of the black digits) of 



a uniform yellow colour ; hand without a finger- 

 keel ; median eyes smaller ; no large tooth in 

 the middle of the inner side of the long basal 

 series of the median row on the digit. 

 a^. Eight median rows of teeth on movable digit ; 



the sides and lower surface of the tail thickly 



and somewhat coarsely granular ; all the 



normal keels well defined and coarsely granu- 

 lar ; upper surface of tail also granular, but 



more finely ; last abdominal steruite finely 



granular and marked with four abbreviated 



crests ; coloration uniform Jacksoni, Poc, 2 • 



* I have failed to unravel to my satisfaction the specific characters of 

 the remaining species of the genus as set forth by Prof. K. Kraepeliu. 



