690 GENEEA AJSH SPECIES OF BIEDS. 



II. HETEROCORAX, STimye. 



(Sharpe, Cat. Birds Brit. Mus. iii. p. 11, 1877. 

 Eeichenow, Yog. Afriljas, ii. p. 637, 1903.) 

 [Corvus, pt., Shelley, B. Africa, v. p. 140 (1906).] 



1. capensis {Licht.). (p. 12.) S. Africa 



(Eeichenow, t. c. p. 637 ; Shelley, t. u. p. 152.) (Cape Colony to 



Rhodesia and 

 Benguela). 



2. minor {Heugl). (p. 12, pt.) E. & N.E. Africa 



(Beicbenow, t. c. p. 638.) (Abyssinia to 



\capensis, pt., Shelley, t. c. p. 152.J German E. Africa). 



III. ^alatotoraj:, H. 0. Forbes. 



(Forbes, Bull. B. O. 0. i. p. xxi, 1892.) 



1. Tnoriorum, Forbes, I. c. Chatham Is. 



[Extinct.^ 



IV. CORVUS, Linn. 



(Sharpe, Oat. Birds Brit. Mas. iii. p. 13, 1877 ; 

 Gates, Paun. Brit. Ind., Birds, i. p. 12, 1889 ; 

 Hartert, Yog. palaarkt. Fauna, i. p. 2, 1903 ; 

 Eeichenow, Yog. Ai'rikas, ii. p. 632, ] 903 ; 

 Eidgway, Birds N. & M. Amer. iii. p. 256, 1904 ; 

 Shelley, B. Africa, v. p. 140, 1906. 

 [Corone, Kaup ; Sharpe, Cat. Birds Brit. Mus. 

 iii. p. 30 (1877) *.] 



1. corax, Linn. (p. 14.) N. & G. Europe. 



(Eeichenow, t, c. p. 632 ; Hartert, t. c. p. 2.) 



* The relative proportions of the wing-feathers, on which I depended for the sepa- 

 ration of the Crows from the Kavens, seem not to be constant in all species, and the 

 genera have not been separated by recent observers. 



