South African Arachnida 139 



surface ; fingers with 11 main rows of teeth, the movable finger 

 with 12 anterior flanking teeth, its length 2|^ times that of hand- 

 back. 



Legs. — Femora and tibiae finely granular, with granular 

 keels. 



Pectines with 18 teeth, the posterior basal lamella of the scape 

 sharply angular at the posterior inner corner, bearing 2 teeth on its 

 hind margin, the scape itself not reaching apex of trochanter. 



Locality.— 1 j (Eeg. No. 2206) found by Mr. M. Schlechter 

 between Henkries and Wolftoon in Little Bu.shmanland, Namaq. 

 Div., Cape Colony, in February. As no genital stylets could be 

 found I conclude the specimen must be a ? . 



Meccs^crements . — Total length 35 mm.; length of cephalothorax 4i, 

 of tail 21, of fourth caudal segment 3|-, of tibia of pedipalp 4|-, of 

 movable finger 5; width of fourth caudal segment 2, of tibia of 

 pedipalp 1-6. 



This is, I believe, the second specimen of the genus recorded from 

 South Africa, the only other example being the type of B. conspersus 

 Thor. from " Caffraria." The latter, besides being greenish-red, with 

 5 rows of black spots above, the vesicle banded with infuscate stripes 

 and the legs and pedipalps spotted with black, has almost smooth 

 abdominal sternites but appears to agree in almost every other 

 respect very closely with arenaceus. C. L. Koch (Arach. v. 6, p. 77) 

 has also recorded a specimen of B. thessandrus (Koch) from the Cape, 

 but this locality seems doubtful. 



Gen. PAEABUTHUS Poc. 



(A revision of the South African species.) 



A revision based on an examination of a large series of specimens 

 from different localities is still needed for a clear conception of the 

 South African species of this genus, and although several of the 

 described species are still unrepresented in the Collection the latter 

 is nevertheless sufficiently large for this purpose, as the list of 

 specimens given below will show. 



Specific Characters. — Excellent specific characters showing little 

 or no variation are afforded by (1) the form and size of the 

 shagreened area on the upper surface of the first caudal segment, 

 (2) the degree in which the middle lateral keel is developed in the 

 fourth segment, (3) the granulation of the lower surface and of the 



