New South African Scorpions. 17 



Tcrga as in the male of 0. granicauda, but the three elevations of 

 the seventh segment are very low. 



Sterna smooth and polished, finely punctured, the posterior seg- 

 ment somewhat roughened at the sides ; spiracles with a straight 

 anterior and arcuate posterior edge, the rather wide space between 

 these edges occupied by a pale yellowish plate. 



Gauda moderate ; its upper surface coarsely granular in segments 

 14, nearly smooth in segment 5, the median groove finely granu- 

 lar in the anterior, smooth in the posterior segments ; upper crests 

 granular, weak in segment 1, the terminal tooth enlarged in the 

 fourth segment ; upper lateral crests weakly granular ; infero-lateral 

 and median crests completely obsolete in segments 1-4, serrated 

 in segment 5 ; sides of cauda weakly granular, more strongly so in 

 the first and fifth segments ; ventral surface of first three caudal 

 segments smooth, polished, and finely punctate, that of fourth 

 segment somewhat roughened with pits and minute granules ; fifth 

 segment coarsely granular below ; vesicle minutely granular on the 

 basal half of lower surface. 



Palps. All the crests of the hurnerus and its upper and anterior 

 surfaces coarsely granular, the lower surface nearly smooth ; upper 

 crest of brachium crenulated, posterior surface coarsely granular ; 

 hands with long hairs, moderately convex above, the upper surface 

 covered with strong isolated granules ; finger-keel weak, granular or 

 crenulated ; inner part of upper surface of hand with no trace of 

 the secondary keels, the outer part of the upper surface with traces 

 of a secondary keel ; inner edge of hand denticulate ; middle of 

 hand slightly exceeding the length of hand-back. 



Legs. Lower edge of femora coarsely granular, anterior surface 

 of posterior femora finely and sparsely granular ; tarsi of fourth pair 

 of legs with 1 external and 3-4 internal spines below, those of the 

 third pair with 2 external and 3-4 internal spines below, in addition 

 to the 4 external and 5 internal spines on the terminal lobes ; superior 

 process much shorter than the lateral lobes. 



Operculum much broader than long, completely cleft longitudinally. 



Pectines with 13 teeth, the scape rounded at the base behind and 

 free of teeth for one-fifth of its length. 



Measurements in Millimetres. Total length 54 ; greatest length 

 of carapace 8-J ; width of carapace ? (specimen damaged) ; distance 

 of eyes from anterior median edge 6 ; width of hand 5-4- ; length of 

 hand-back 5, of movable finger 64-, of tail 32 ; width of first caudal 

 segment 4, of fifth caudal segment 3. 



Locality. K single, somewhat mutilated specimen from Steirikopf, 

 Namaqualand. 



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