8 Some Lizards and Arachnids of Natal 



character Brachionopus should be kept distinct therefrom. The 

 absence of a well defined spur on the first tibia of the adult male in 

 Brachionopus may be of generic value, but secondary sexual characters 

 are apt to be erratic. 



Order SOLIFUG^. 



Solpuga chadwicki, sp. nov. (Text-fig. 3). 



This species is founded on a series of adult male and female 

 specimens collected at Weenen by Mr. J. M. K. Chad wick during the 

 latter part of December, 1919, and the first week of January, 1920. 

 It is closely related to strepsiceros, Krpln. of Barberton ; serraticornis, 

 Pure, of Bulawayo ; and spiral icor?iis, Pure, of the Zoutpansberg and 

 Barberton districts. The jaws and tlagellum are stouter than in any 

 of these species, and the shaft of the flagellum differently and more 

 strongly curved. It is just possible that S. caffra, Pocock, founded on 

 two adult female specimens from Estcourt, may actually belong to 

 this species, but as it is quite impossible to identify species of this 

 genus from female characters, I ignore those which are founded only 

 on females. 



Flagellum. The basal enlargement is high and well rounded, the 

 inner surface flattened, outer surface swollen. Procurrent portion of 

 shaft very short, the anterior band situated over the second tooth. In 

 side view, the shaft presents two curves with a sinus between them in 

 its course ; the first is a bold curve immediately above the basal 

 enlargement, then follows a well marked sinus, and afterwards the 

 terminal curve which is weaker than the first one, the shaft towards 

 its tip becoming straight. Viewed from above, the shaft is seen to be 

 twisted outwards at the sinus. On its outer side near the summit of 

 the distal curve, there is a slight lateral extension of the membrane 

 extending for a short distance along the shaft and terminating 

 abruptly distally ; this extension has serrated and prickly edges, 

 which serrations extend proximally almost as far as the base of the 

 sinus. Over the greater portion of its length the shaft is more or less 

 subcylindric ; it is expanded but not greatly flattened at the anterior 

 band. At the apex it is acuminately pointed, the end being not far 

 from the ocular tubercle. 



