144 Annals of the South African Museum. 



Miyas, L. Koch, but though its eye-position accords fairly well there 

 is a strong and important difference in the form of the cephalo- 

 thorax. This in M. abrahamii is as broad as long (or at any rate 

 only slightly longer than broad) and well rounded on the sides, 

 while in Migas it is considerably longer than broad, and its sides are 

 getting on towards parallel. 



The height of the clypeus is equal to half that of the facial space. 

 The central eyes of the anterior row are rather larger than the 

 laterals. The under sides of the metatarsi and tibise of the first 

 and second pairs of legs are furnished with powerful spines. The 

 tarsi of those pairs are very short, of an oval form in the males, 

 tapering in the females. The superior terminal tarsal claws are 

 armed either with 2 inferior teeth (<?) or a geminated tooth ( $ ), 

 springing from a short but distinct claw-joint. 



C^EDMON ABRAHAMII Cambl". 



Moggridgea abrahamii Cambr. 

 P. Z. S., 1889, p. 41. PL II., fig. 3. 

 Hab. Natal, South Africa. 



C^DMON THOEACICA, Sp. 11. (PL IX., fig. 1.) 



Adult male, length very nearly 4-| lines ; length of cephalothorax 

 2 lines, breadth ditto. 



Cephalothorax equal in length and breadth, rather flattened, and 

 almost circular ; close in front of the thoracic indentation (which 

 is curved, the convexity directed forwards) is a strongish rounded 

 eminence. The siirface of the cephalothorax is coarsely granulose ; 

 its colour is deep brown, and the height of the clypeus equals half 

 that of the facial space. 



Eyes of anterior row equally separated by a space rather exceeding 

 the diameter of one of the centrals. The fore-laterals are largest of 

 the eight. The convexity of the curve of this row, looked at ver- 

 tically from above and behind, is very slightly directed forwards. 

 Eyes of the posterior row form a curve in same direction, but rather 

 stronger than that of the anterior. The two eyes at each end of the 

 posterior row are very near to each other but not quite contiguous. 

 Each lateral eye of the posterior row is very little more than its own 

 diameter's distance from the anterior lateral on the same side. In 

 front of and between the fore-central eyes is a vertical spine with 

 a much smaller one on each side of it. 



