124 Annals of the South African Museum. 



at their base ; most of the teeth, particularly those of the fixed finger, 

 are provided ivitli one or tivo smaller teeth, especially on the proximal 

 side of each tooth ; the movable finger has such dentate teeth only 

 in the distal third, basally the teeth become lower, truncate and 

 simple. 



Mandibles large and robust, shagreened ; the fixed finger with 4 to 

 5 large teeth in the central part and some very small ones basally ; 

 the movable finger has several small teeth. The projection of the 

 outer side of the movable finger only slightly developed. 



Legs with very strong, bristle-like hairs. The two posterior pairs 

 robust with rather broad femora. Claws simple. 



Length 2 - 06 mm. 



Measurements. Cephalothorax : long. 0'57 ; lat. in front O67 ; 

 lat. behind 0'49. Mandibles: long. 0'57. Femur: long. 0-76; lat. 

 0-19. Tibia: long. 0-21; lat. 0-17. Hand: long. 0-40; lat. 0-28. 

 Fingers : long. - 67 mm. 



Habitat. Cape Province. King William's Town Div. : Pirie 

 (E. Godfrey), 3 ? . 



NOTE. This species is especially marked out by the teeth of the 

 fingers, which are exceedingly characteristic, being somewhat like 

 the teeth of a shark ; though each tooth has only one or two 

 secondary teeth, the whole series calls to mind the row of teeth of 

 a shark. 



In South Africa there are 3 species of Chthoni.us with cephalo- 

 thorax, narrowing very much backwards : Chthonius contractus 

 Tullgren and the two new species described here : Chthonius 

 Godfreyi and Chthonius serratidentatus. These three species are, 

 however, easily distinguishable by the dentition of the palpal fingers, 

 Ch. contractus having both fingers provided with slender, pointed, 

 and remotely placed teeth ; Ch. Godfreyi one finger with similar 

 teeth, but the other nearly destitute of such ones ; and finally Ch. 

 serratidentatus with the characteristic teeth just mentioned- 



42. CHTHONIUS SINUATUS Tullgren. 



Cape Province. Cape Peninsula : Eetreat (W. F. Purcell), 1 ? . 



I have compared this single specimen with one from San Thome 

 (Guinea Coast), which I have identified with Tullgren' s species. 

 The South African animal has the hand of the palps somewhat more 

 robust, but in both cases the hand is convex on both sides, and 

 in both cases the inner margin of the fingers is provided with small, 



