4 Annals of the South African Museum. 



Sterna. Segment 1 nearly smooth, or granular along the hind 

 margin ; segments 2-5 finely and densely granular throughout. 



Cauda much more densely granular on the ventral surface in the 

 first and second segments. 



Palps. All the segments longer ; humerus less granular below ; 

 hands pilose, very long and narrow, the length of hand-back much 

 exceeding the breadth of hand ; the inner part of upper surface of 

 hand fiat, smooth or minutely granular, especially on the sites of the 

 (deficient) secondary keels, the network of punctures present but not 

 raised ; inner edge of hand strongly denticulate. 



Operculiim transversely oval, much broader than long, completely 

 cleft longitudinally. 



Pectines reaching considerably beyond middle of trochanters of 

 fourth pair of legs, with 25-29 teeth ; scape rectangular at base 

 behind and therefore toothed along its whole length. 



Measurements in Millimetres. Total length 106 ; greatest length 

 of carapace 15 ; width of carapace 144- ; distance of eyes from anterior 

 median edge 11; width of hand 74-; length of hand-back 11, of 

 movable finger 21^, of tail 56 ; width of first caudal segment 54, of 

 fifth caudal segment 4, of vesicle 5. 



Younfj (in alcohol}. 



The upper surface of the hand is often covered with a network 

 of dark pigment, corresponding with the anastomosing ridges ; the 

 humerus and brachium are almost black. 



In the nearly adult female the hand is relatively smaller, but pro- 

 portioned as in the adult, while in the younger individuals the length 

 of the hand-back considerably exceeds the breadth of hand. 



In the nearly adult male the hand is of the same length as in the 

 female of the same age, but the breadth of the hand is considerably 

 less than the length of the hand-back (in millim. : 7:84-) ; the 

 upper surface is provided with a raised network as in the female, 

 but the ridges show a greater tendency to form granules ; the terga 

 are more or less minutely granular ; only the last segment of the 

 sterna is granular posteriorly ; the carapace is as long as the first 

 and second caudal segment and half the third. 



In the younger individuals of this species the sex is distinguish- 

 able only by means of the operculum and the pectines. The latter 

 always possess the same shape and the same number of teeth as 

 are found in the adult of the corresponding sex, namely, 20-21 in 

 the female and 24-30 in the male. The granulation on the posterior 

 part of the last sternite is also always present, though sometimes 

 consisting of only a few weak granules. 



