130 MR. R. I. pococK ON THE SCORPIONS [Mar. 18, 



of Parabuthus, the exteimal series being composed of pairs of teelh, 

 enlarged and set obliquely, the internal series formed of single teetli 

 only slightly separated from the apices of the median rows, and 

 constituting with the teeth of the external series oblique, semi-trans- 

 verse, short rows ; the median rows not overlaj)ping. 



Legs hairy ; the first pair almost without granules, the second 

 slightly granular, the third with granular and subcarinate femur and 

 granular patella, the fourth with strongly granular and subcarinate 

 femur and patella ; tibice of two posterior pairs spurred ; coxee 

 smooth. 



Pectines very long, projecting nearly to the end of the trochanter 

 of the fourth pair of legs ; furnished with from 24-27 similar teeth. 



Measurements in millimetres. — Total length 34 ; length and width 

 of cephalothorax 4 : length of tail 22 ; of first two segments 6*.5 ; 

 of fifth segment 4'6; width of first 2-5 ; of fifth 2-1: liumerus, length 

 3'.5, of brachium 4 ; width of brachium TS, of manus I'Q ; length 

 of " hand -back " 2'8 ; of movable dactylus 4. 



A single male specimen in the Museum collection ticketed " S. 

 Africa, near the tropic of Capricorn." 



This species is closely allied to L. pilosus, Thorell (the type of the 

 genus), to L. lunull/er, Simon, and to L. planimanus, Karsch. 



From L. pilosus it differs in having the inferior caudal keels well 

 developed and denticulate ; from L. lunulifer it may be recognized 

 by its tubercular vesicle, granular legs, and by its subcostate and 

 subgranular posterior abdominal sternite ; and from L. planimanus 

 by the form of its lateral tergal keels, by the presence of ten keels on 

 the third caudal segment, and by its narrower hand. 



Peters's species Centrums trilineatus (Monats. Ak. Wiss. Berlin, 

 1862, p. 515), from Tette, is too briefly characterized to be identified; 

 but it probably belongs to this genus and may, indeed, prove to be 

 synonymous with either of the four species here discussed. 



Lepreus fischeri, Karsch, var. nov. nigrimanus. (Plate 

 XIV. fig. 2.) 



1 Tityus tricolor, Simon, Bull. Soc. Ent. Belg. 1882, p. hx. 



Colour. Trunk above olivaceous, of a dull green colour, the sides 

 of the cephalothorax paler than the middle ; each of the first six 

 tergites marked with three pale sjjots — one median, and one on each 

 side near the lateral posterior angle ; seventh tergite paler than the 

 preceding ; trunk below olivaceo-testaceous ; upper surface of first 

 four caudal segments ochraceo-testaceous, the under surface of the 

 same colour, but on the second, third, and fourth there is an anterior 

 black spot on each side and a median black posteriorly dilating band ; 

 fifth segment and the vesicle wholly piceous or brunneous ; aculeus 

 black at the tip, pale at the base ; humerus, brachium, and distal 

 half of digits clear ochraceous; manus and proximal half of digits 

 piceous ; legs wholly pale ochraceous. 



Cephalothorax lightly emarginate in front ; ocular tubercle with 

 ante-ocular portion smooth ; posterior and lateral portions finely and 

 sparsely granular. 



