Opisthophthalmus in the British Museum. 235 



separating this species from what he calls pilosiis, for the 

 characters he assigns to the latter are merely those of the male 

 of capensis, in which usually all the abdominal sterna with the 

 exception sometimes of the first are granular, while the palpi 

 are very richly hairy; yet Kraepelin speaks of the two sexes, 

 both of pilosus and capensis, as if he were familiar with them. 

 I cannot, however, avoid the conclusion that he has in some 

 way confused the sexual characters ; and this opinion is 

 strengthened by the fact that he considers the figure of the 

 type published by Herbs t to represent a male. It appears, 

 however, to me to be without doubt a female, as both Thorell 

 and Simon have affirmed. The male of capensis has a slender 

 hand, and the first and second caudal segments taken together 

 are equal to the length of the carapace ; while Ilerbst's figure, 

 with its broad hands and short tail, agrees exactly with all 

 the adult females in this collection. 



Opisthophthahnus p>Mi\_di~\pes i C Koch. 



Opisthophthalmus pallipes, C. Koch, Die Arachuiden, x. p. 3, fig. 757, J ; 

 Thorell, Etudes Scorpiol. p. 227. 



A single female from the Concordia Copper Mine, Ookiep, 

 about 70 miles from the coast in Little Namaqualand, to the 

 south of the Orange River (collected by W. H. Clark), gives 

 the following measurements in millimetres: — Total length f 15; 

 length of carapace 16*5, of tail 59, of hand-back 105, of 

 movable digit 17*5 ; width of hand 1 3*7. 



The accompanying figure of this species (p. 236) is taken 

 from a photograph by Dr. Howard of a female specimen 

 procured near the copper mines, Namaqualand, and sent to 

 Mr. Lydekker, by whose kind permission I here reproduce 

 it. The interocular area of the carapace and the hand, which 

 are blackish in the photograph, are reddish yellow in the 

 actual specimen. 



Opisthophthalmus carinatus (Peters). 

 Scorpio carinatus, Peters, Mon. Ak. Wiss. Berl. 1861, p. 515. 



Two male examples, Otjimbinque (Keyserling collection) 

 and Umfuli River, Mashunaland (G. A. K. Marshall). The 

 one from Otjimbinque presents the discoloration and softness 

 of exoskeleton characteristic of recently moulted Arthropods ; 

 the one from Umfuli, on the contrary, is full- coloured, the 

 extremity of the tail, the legs, and hands being pale yellow, 

 while the upper surface of the trunk is greenish brown, the 



16* 



