100 On two new .Species of Scorpions from East A frica . 
ture of the keels of the tail it closely resembles hottentotia , 
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 Jiottentctta and the dactyli much 
shorter ; in the form of these parts it calls to mind the male 
of B. Philippsii , Pocock, but with this species it cannot be 
confounded on account of the conformation of its caudal 
segments. 
Scorpio viatoris , sp. n. (PL I. fig. 1.) 
Colour . — Trunk above olivaceo-piceous, paler beneath ; 
hands with reddish tinge; vesicle ochraceous ; aculeus black 
in its hinder half. 
Ceplialoihorax 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 the 
cephalothorax. 
Tergites granular, minutely and closely in front and at the 
sides, much more coarsely and less closely behind ; the first 
six marked w T ith 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 ; 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 
