320 Mr. R. I. Pocock on 



Soutli-African species of this genus * by the absence of the 

 patches of spinules on the coxai of the first, second, and third 

 pairs of legs, by the restriction of the spinules on the labium 

 to the apical iialf of this sclerite, and of those on the coxa of 

 the palp to three or four irregular rows on the preaxial side of 

 the under surface. Moreover the eyes of the anterior line 

 are either straight by their centres or slightly procurved; the 

 medians being from about one half to three quarters of a 

 diameter apart and from about one and a half to nearly twice 

 their diameter from the laterals, to which they are subeqiial 

 in size, being sometimes slightly larger and sometimes 

 slightly smaller ; the distance between anterior median and 

 anterior lateral about equal to that between anterior median 

 and posterior lateral and much greater than that bstweeri the 

 two laterals on each side, which about equals a diameter and 

 a half of the anterior lateral. In M. Dz/en^ Ahrahami, and 

 Whytei the distance between the two lateral eyes is subequal 

 to the other distances, so that the three eyes in question are 

 disposed as if on the angles of an equilateral triangle. 



The spines on the palpi and anterior two pairs of legs are 

 inconstant in number ; on the palpi there are usually two 

 (sometimes three) spines on the inner and outer sides of the 

 tibia and tarsus ; on the first and second leg there are usually 

 externally 8-9 tibial and 4-5 protarsal spines, while the inner 

 side of each of these segments is usually armed with 4 spines. 



Measurements in millimetres, — Total length 15; carapace 8; 

 patella+ tibia of first leg and fourth leg 7. 



hoc. Durban ((7. P. Staunton). 



Genus ACANTHODON, Guer. 

 Acanthodon Hamiltoni^ sp. n. 



? (subadult). — Colour uniformly ochraceous; ocular tu- 

 bercles black. 



Anterior lateral eyes looking forwards from the extremities 

 of a pair of large, elongate, abruptly rising tubercles, which 

 are as long as the depression separating these tubercles from 

 the posterior eye-cluster ; the four median eyes of the latter 

 forming a quadrangle Avhich is only a little wider behind than 

 it is long ; the eyes compact, subequal, the anterior and 

 posterior on each side separated by a narrow space, the 

 anteriors separated from each other by a space of about a 

 diameter, the posteriors by a space which a little exceeds a 

 diameter ; posterior lateral eyes very large, each larger than 

 the sum of the adjacent eyes of the median quadrangle, their 



* For table of these see Pocock, P. Z. S. 1897, p. 734. 



