22 Annals of the South African Museum 



scape toothless for about two-fifths of its length, the posterior basal 

 angle about 150. 



Measurement in Millimetres. Total length 85 ; greatest length of 

 carapace 13 ; width of carapace 12; distance of eyes from anterior 

 median edge 8^ ; width of hand 8i ; length of hand-back 8, of 

 movable finger 9^, of tail 44 ; width of first caudal segment 5, of 

 fifth caudal segment 4. 



Male (recently killed, in alcohol). 



Colour of hands lighter above ; terga almost entirely black. 



Carapace scarcely longer than first two caudal segments ; posterior 

 half of interocular area weakly granular or nearly as strongly granu- 

 lated as the anterior half. 



Terga not shiny ; the first 6 segments very densely and minutely 

 granular, with larger granules near the posterior border in the last 

 3 or 4 of these segments. 



Sterna. First three segments smooth, except along the posterior 

 edge of the third and sometimes also of the second, where they are 

 usually roughened ; fourth segment finely granular and rugose, but 

 smooth in front of the stigmata ; fifth segment entirely covered with 

 squamiform granules, as is also the lower surface of the first caudal 

 segment. 



Hands much narrower but not longer than in female, more hairy ; 

 upper surface more weakly granulated, its keels, and especially the 

 secondary keels, more strongly expressed ; the granules on the inner 

 edge more pointed. 



Operculum transversely oval, completely cleft longitudinally. 



Pectines with 11-12 teeth ; the scape toothless at base for nearly 

 one-third of its length, the posterior basal angle 130-135. 



Measurements in Millimetres of largest male. Total length 74 ; 

 greatest length of carapace 11 ; width of carapace 10^ ; distance of 

 eyes from anterior median edge 7 ; width of hand 6 ; length of hand- 

 back 5^, of movable finger 10, of tail 41 ; width of first caudal 

 segment 5 ; of fifth caudal segment 4. 



Locality. A number of adult males and females from near the 

 railway station at Tulbagh Road at the foot of the Waterfall Moun- 

 tains, Tulbagh Division. They construct deep burrows in the 

 earth. 



This species is very closely allied to 0. capensis. I can find 

 scarcely a differential character for either of these species which does 

 not occasionally appear in the other ; excepting, however, (1) the 

 colour of the legs, the anterior surface of which is deep reddish 

 brown and the posterior surface lighter in fuscipes, while in capensis 



