Maiichcster Monoirs, Vol. Ivi. (191 1), No. %. 3 



any superior keel, and the granulation of the edge of the 

 upper surface and sides is quite fine, none of the granules 

 being enlarged. 



Hand of chela about as wide as the tibia ; the 

 movable finger a little more than twice the length of the 

 hand-back. 



Pectines with 35-36 teeth ; the ba.sal lamella of the 

 scape does not bear an)- teeth, and is produced inwardly 

 so as to form a wide lobe. 



Colour yellow, except for the dorsal surface of the 

 trunk which is brown, the first six tergites being darker 

 than the carapace and the last tergite. 



Measurements, in mm. Total length, 92 ; length of 

 carapace, 9*5, of fifth caudal segment, 10. 



Loc. East bank of the Loangwa, Portuguese East 

 Africa ; a single example of the female sex. 



Remarks. — This new species differs, apparently, from 

 /'. mosavibicensis, Peters (Tete, Portuguese Zambesia and 

 Severelela in Bechuelaland j, in that the superior keel of 

 the fifth caudal segment is only present in the anterior 

 third of the segment (see Prof Kraepelin's notes on 

 P. inosambicoisis in L. Schultze, Zool. u. aiithrop. Ergeb- 

 nisse e. F^orschungsreise iti Sudafrika, p{x 255 and 256, 

 Fig I). 



In the British Museum collection there is a male 

 specimen of a Parabuthus, collected by Mr. R. J. 

 Cunningham in the Kalahari desert, which has the 

 stridulatory areas of the first and second caudal segments 

 very similar to those of the new species, but the fusion of 

 the granules, to form transverse ridges, is not so complete. 

 It is possible that this species is the true P. vtosambicensisy 

 but I have not had the opportunity of comparing it with 

 specimens from the typical locality, and therefore cannot 

 be certain of its identity. It differs from P. triiculentus. 



