Species of Opisthoplithalmus . 143 



male. It differs, however, so little from the adult that I need 

 make only a few corrections and additions to the original descrip- 

 tion. 



Adult Male (recently killed, in spirits). 



Colour. The narrow black stripe on each side of the interocular 

 area of the carapace is very often absent. 



Carapace as long as the first two caudal segments taken together ; 

 its anterior edge generally slightly emarginate in the middle ; sides 

 of the carapace granular, coarsely so along the lateral borders of the 

 interocular area.* 



Terga very finely roughened anteriorly, finely granular posteriorly 

 and at the sides. 



Palps. Under surface of humerus more or less granular ; hands 

 with the inner part of upper surface weakly convex, nearly smooth 

 or w r eakly granular, the secondary keels practically obsolete, the two 

 black lines representing these keels sometimes absent ; finger-keel 

 moderate, granular, or nearly smooth, especially in the distal 

 part. 



Pcctuies with 18-22 teeth. 



Measurements in Millimetres. Total length 96; length of carapace 

 14 ; width of carapace 12 ; distance of eyes from anterior edge 9 ; 

 width of hand 8| ; length of hand-back 9, of movable finger 12, 

 of tail 55 ; width of first caudal segment 5f , of fifth caudal segment 

 31 



Six adult specimens from Bushmanland. The humerus and 

 brachium are somewhat longer, while the hand is much narrower 

 than in the female. 



Adult female (recently killed, in spirits). 



The adult female closely resembles the adult male, but differs 

 from it in the following characters : 



Carapace as long as the first and second caudal segment and one- 

 half of the third. 



Terga. Segments 1-6 smooth and shiny, granular only at the 

 sides ; seventh segment smooth anteriorly. 



Palps. The crests of the humerus and brachium and often also 



* In the synoptic table in my previous paper (p. 30 of this journal) this granu- 

 lation is represented as being finer than that of granicauda and ater. In the 

 adults of sclilechteri and granicauda, however, the granulation is equally coarse, 

 although finer than in ater. 



