200 Annals of the South African Museum. 



in the mesial portion of the segment in the last 3 or 4 segments, 

 particularly in segment 5, in the mesial part of which are some 10-15 

 extremely strong ridges. (In the ? these tubercles are very weak in 

 the anterior segments and sometimes quite absent in segment 1, 

 while in segment 5 the mesial transverse ridges are lower, although 

 very distinct.) 



Tail. — Medial and lateral inferior keels replaced in segment 1 by 

 transverse ridges and rounded tubercles respectively, resembling 

 those of the fifth abdominal sternite in size and appearance ; these 

 keels in segments 2-3 distinct, coarsely granular. (In the 5 seg- 

 ment 1 resembles the fifth abdominal sternite below, while in 

 segments 2 and 3 the inferior keels are weakly or coarsely granular.) 



Pectines with the scape somewhat elongated at the base and free 

 of teeth for about a quarter of its length (in the ? for about one-third 

 of its length). 



Hands lightly convex above, much narrower, the granules on the 

 upper surface smaller, sharper, and more conical and isolated than 

 in the ? ; width of hand exceeding the length of hand-back ; the 

 inner edge denticulate ; length of hand 19^, width 9, length of hand- 

 back 7f , length of movable finger 12^. 



In both sexes of this species the finger-keel of the hands is smooth 

 or nearly so for the greater part of its length, or more or less broken 

 up into coarse granules proximally, the granular portion occupying 

 at most half of the whole length. The secondary keels of the hand 

 are denoted principally by 2 black stripes. The superior crest of 

 the tibia of the pedipalp is granular and the posterior surface is pro- 

 vided with the usual series of ridges (sometimes almost obsolete) and 

 generally also with a few coarse granules, at least distally, along the 

 middle. Terminal tarsus of the fourth leg usually with 3 (but often 

 with 4) spines on the outer lobe (4 is the number given by Kraepelin). 



Opisthophthalmus ceassimanus Pure. 



Additional specimens of variety j3 : — 



(a) 2 ad. ? from Bladgrond, Great Bushmanland, Kenhart Div. 

 {M. Schlechter). 



(b) 1 juv. from Beenbreek and (c) 1 juv. from Kakamas, both near 

 the Orange Eiver in the north of Kenhart Div. {M. Schlechter). 



Variety y. — A third variety of crassimanus occurs in Carnarvon 

 Div., Cape Colony, which is distinguished by the presence on the 

 penultimate tarsal segment of the third and fourth legs (at least on 

 one side of the body) of an external inferior spine, situated a little 



