the Systematics of Scorpions. 367 



3. Parahuthus yranulatus, Hempr. & Ehrenb. 



The British Museum has specimens from Benguela [Mon- 

 teiro), Port Nolloth and Garies {Dr. R. Broora), Pcarston 

 {Dr. Broom), Janseuville {Miss Leppan), Hopefield_, Graaf 

 lleinet. 



P. gramdatus, subsp. fuscus, Poc. 



Kalahari Desert {R. Cuiiniii(jham). 



The British East-African species P. pallidas, Poc, of 

 which the Museum possesses examples from Mombasa, 

 Giriama, and Taru^ differs entirely fi'om P. gramdatus in 

 the completion of the median lateral keel on the fourth 

 caudal segment, the small hands of the male, the enlarged 

 basal pectinal lobe in the female, &c. 



4. Parabuthus flavidus, Poc. (Ann. & Mag. Nat. Hist. (7) 

 iii. p, 419, 1899). 



According to PurcelFs table of the South- African species 

 of Parahuthus, P. flavidus falls alongside P. Schlcchteri 

 from Bechuanaland, which is unknown to me; but the two 

 seem to be at least separable as follows : — 



a. Upper surface of second caudal segment witli a mode- 



rately large oval shagreened excavation occupying its 

 anterior half, the posterior half mesiallj' grooved and 

 smooth ; shagreen fine, not squamiform ; pectinal teeth 

 in male from 46-51 , , Schlechteri. 



b. Upper surface of second caudal segment evenly chan- 



nelled throughout, the entire channel covered with 

 coarse, mostly squamiform shagreen ; pectinal teeth 

 36-37 in male flavichis. 



The type and hitherto only recorded individual of this 

 species is a subadult example from Taungs in Bechuanaland 

 {H. A. Spencer). A much larger specimen collected by 

 Mr. R. Cunningham in the Kalahari Desert gives the 

 following measurements in millimetres : — 



Total length 77 ; carapace 8-5; tail 48; width of first 

 segment 6, of fourth 7 ; width of brachium 3, of hand 4*2 ; 

 length of movable finger 7. 



5. Parabuthus cristatus, Poc. (Ann. & Mag. Nat. Hist. (7) 

 vii. p. 284, 1901), from the Congo, difi'ers from P. brevi- 

 manus as described by Purcell in having the sides and lower 

 surface of caudal segments 1-3 smooth, and not "densely 

 and finely granular." Moreover, the four inferior keels of 



