142 Annals of the South African Museum. 



of the median groove of the carapace is not developed. The absence 

 of an anterior upper crest of granules from the humerus in histrio is 

 doubtless due to its being much younger, as it measured only 26 mm. 

 in length. I have no doubt as to the correctness of Kraepelin's view 

 that histrio is merely a very young male of anderssoni, Thor. 



(c) 4 $ (2 ad.) and 1 ad. $ from German South- West Africa 

 (Dr. Marloth) : No. of pect. teeth in 5 17-20, in $ 24. The adult 

 male differs from the females in having a longer and stouter tail, 

 the posterior basal angle of the pectinal scape nearly rectangular, 

 and therefore toothed along nearly its whole length (in the ? free 

 of teeth at base behind for about | of its length), and the hands 

 slightly narrower, flatter above, with longer fingers. Width of hand 

 in J 13| mm., in $ 12 mm.; length of hand-back in 5 10 mm., in 

 $ 10f mm.; length of movable finger in ? 13^ mm., in $ 18^ mm. 

 Further, the under surface of the abdominal and anterior caudal seg- 

 ments are strongly corrugated in the male but smooth in the female. 



The area of distribution of this species is of very great extent, it 

 having been also recorded from various parts of South-East Africa. 

 It has not been found south of Bushrnanland in the Cape Colony, 

 nor in the Eepublics or Natal. 



OPISTHOPHTHALMUS SCHLECHTEKI, Pure., 

 Ann. S. Afr. Mus. i., p. 12 (juv. $ ), 1898. 



Area of Distribution. Mr. Max Schlechter found this species in 

 that part of Little Bushrnanland which lies between Henkries, 

 Naroep, and Sabies, this being nearly the same area occupied by 

 the yellow-stinged race of 0. wahlbergi. 



(a) 5 $ (4 ad.) and 2 ad. $ from Henkries, Little Bushmanland 

 (Max Schlechter} : No. of pect. teeth in ? 13-17, in $ 18-22 ; length 

 of carapace in ad. 5 13f-14f mm., in ad. $ 13f-14 mm. 



(b) 6 ? (4 ad.) and 8 $ (3 ad.) collected between Henkries and 

 Wolf toon in Little Bushmanland (Max Schlechter) : No. of pect. 

 teeth in ? 13-16, in $ 19-22; length of carapace in ad. ? 13J- 

 14f mm., in ad. J 13f-14 mm. 



(c) 1 ad. $ and 1 ad. $ from Wolftoon, Bushmanland (Max 

 Schlechter) : No. of pect. teeth in ? 15-16, in $ 20-21 ; length of 

 carapace in ? 13i mm., in $ 13f mm. 



(d-g] Specimens from Vuurdood (near Eamond's Drift on the 

 Orange River), Hunitsamas (near Vuurdood), Sabies, and Naroep 

 (Max Schlechter). 



The type-specimen of this species has since proved to be a young 



