100 On two neiv Species of Scorpions from East Africa. 



tuve of the keels of the tail it closely resembles hottentotta, 

 but the fifth segment of that organ is much more deeply 

 excavated, and its sides are distinctly carinate, though not to 

 such an extent as is seen in australis. Moreover, the manus 

 is much larger than in hottentotta and the dactyli much 

 shorter ; in the form of these parts it calls to mind the male 

 of B. Plii'h'pjysiij Pocock, but with this species it cannot be 

 confounded on account of the conformation of its caudal 

 segments. 



Scorpio viatoris^ sp. n. (PI. I. fig. 1.) 



Colour. — Trunk above olivaceo-piceous, paler beneath ; 

 hands with reddish tinge; vesicle ochraceous ; aculeus black 

 in its hinder half. 



Cepjlialothorax wider behind than long, with its anterior 

 border deeply excised in the middle and denticulated at the 

 sides ; lateral depressed portions of cephalothorax finely and 

 closely granular; the area behind the frontal lobes also finely 

 granular, but very sparsely so ; the rest of the upper surface 

 smooth, bearing a few scattered setiferous pores ; ocular 

 tubercle cleft and situated just behind the middle of tlie 

 cephalothorax. 



Tergites granular, minutely and closely in front and at the 

 sides, much more coarsely and less closely behind ; the first 

 six marked with a median smooth keel, the seventh with a 

 sparsely granular median prominence, and one strongly 

 granular keel on each side. 



Sternites bisulcate in front, wholly smooth, all of them, but 

 especially the last, furnished with a few setiferous pores. 



Tail much less than four times as long as the cephalo- 

 thorax ; the first two segments slightly shorter than the 

 cephalothorax ; upper surface of tail almost wholly smooth ; 

 the superior and supero-lateral keels distinctly denticulate ; the 

 inferior keels on the first and second segments wholly smooth, 

 on the third subdenticulate behind ; on the fourth more denticu- 

 lated than on the third, but less so than on the fifth ; the 

 median lateral keel present on the first segment, but much 

 abbreviated anteriorly, represented on the second, third, and 

 fourth segments by a few granules subserially arranged ; the 

 fifth segment furnished with seven denticulated keels ; vesicle 

 carinate and granular beneath j the aculeus somewhat abruptly 

 curved in its posterior half. 



Palpi. — Humerus smooth on its lower and upper surfaces, 

 the latter defined behind and in front by a series of denticles 

 and bearing two or three setiferous tubercles, its anterior 



