Mr. R. I. Pocock on South- African Scorpions. 385 



In addition to the examples of this species from E. Africa 

 and Lake Nyassa that I have previously recorded, the Mu- 

 seum has received it from Fort Salisbury, Mashunaland, 

 5000 feet (G. A. K. Marshall*). U. chlorodermus resembles 

 triangulifer'm many characters — for instance, in the thin spine- 

 armed hand of the male, approximately in the arrangement 

 of the teeth on the digits of the chelas ; it may, however, be 

 recognized by being of a uniformly deep green colour, and 

 having the anterior caudal segments smooth, punctured, and 

 not carinate below, the basal pectinal tooth expanded in the 

 female, and the sides of the upper surface of the fifth caudal 

 segment straight and abruptly sloped posteriorly. In the 

 three last-named respects it approaches the Somaliland and 

 East-African U. Fischeri, Karsch. 



Uroplectes olivaceus, sp. n. 



Colour somewhat the same as in U. flavoviridis, Peters, but 

 the green paler, more emerald on the upper surface of the 

 trunk and chelse, yellower on the tail ; fingers and trochanter 

 of chelge yellow; legs yellow and green, a broad band of the 

 latter colour occupying the whole of the middle of the femur 

 and patella ; lower surface of trunk yellow or greenish 

 yellow. 



Carapace as long as the second caudal segment, finely and 

 closely granular throughout ; ocular tubercle smooth. Terga 

 also finely granular, more coarsely so posteriorly, the median 

 keel smooth, but the keels on the last granular. 



Sterna smooth and polished, the last very weakly granular 

 at the sides. 



Tail about 6| times the length of the carapace, robust, 

 parallel-sided ; the inferior median keels weak, obsolete on 

 segments 4 and 5 ; a weak median lateral keel on segments 

 1 to 3 ; all the keels and the intercarinal spaces granular 

 except the median area on the lower surface of the first 

 segment and the upper surface of all the segments, which are 

 at most feebly granular; the upper keels of segments 1 to 3 

 ending in an enlarged denticle ; upper edges of the fifth 

 segment high and strongly convex ; the hinder half of the 

 upper surface very deeply impressed for the reception of the 



* Mr. Marshall has recently sent me the following species of Scorpions 

 from Mashunaland : — Opisthophthalmus carinatus, Pet., Umfuli River; 

 O. glabrifrons, Pet., Salisbury and Umfuli River ; Hadogenes troglodytes, 

 Pet., Umfuli River; Uroplectes chlorodesmus, Poc, Salisbury ; U. plani- 

 manus (Karsch), Umfuli River. It is interesting to note that, with the 

 exception of the last-named, the species are identical with those that 

 Peters has recorded from Tette on the Zambesi. 



