NLIW SOUTH AFRICAN AHACHNIDA. 309 



of metatarsus I, its length almost two-fiftlis of the distance 

 from the anterior margin of the carapace to the centre of the 

 fovea. Area formed by the frontal and anterior median eyes 

 slightly wider in front, the medians small, about two diameters 

 apart, the frontals large, about one-third of a diameter apart 

 and situated on a common tuljercle which is deeply grooved 

 above. Posterior row about equally spaced, the area formed 

 by the four medians appreciably wider behind ; posterior 

 laterals large, the medians considerably larger than the 

 anterior medians, the hind margins in a slightly procurved line. 

 Legs. — Metatarsus III with three long weak spines below 

 and three stronger ones at the apex inferior! y ; IV with six 

 or seven spines along the lower surface and three at the apex 

 inferiorly. Band of spines on anterior surface of tibia I 

 reaching to the base; of II also reaching to the base and 

 including about twenty-two spines ; IV with two inferioi" 

 apical spines and one weak one on the lower surface. Band 

 of spines along anterior surface of patella III including about 

 thirty spines, of which about seven are on the distal edge; on 

 the posterior distal edge there are five spines; IV with a band 

 of short stout spines stretching the whole length of the 

 anterior surface. Coxfe of legs without spinules below, the 

 third having a dense patch of short coarse bristles or weak 

 spines along its posterior border ventrally. 

 Labium. — With two apical teeth. 



ChelicerEe. — Inner row of teeth on fang-groove including 

 five large teeth ; the outer group without any lai-ge teeth. 



Sternum. — Three pairs of sigilla, the third pair small and 

 not so conspicuous as the preceding pairs ; first pair sub- 

 marginal, second pair their own length distant from the 

 sternal margin. 



Measurements. — Total length 25mm.; length of carapace- 

 10-2 mm., width of same 9 mm.; length of tibia of first leg 

 4-25 mm. This is the largest species of Acanthodon 

 known to me (excluding Gorgyrella namaquensis and 

 G. schreineri, but Gorgyrella is hardly separable from 

 A c a n t h o d o n) . 



