140 CORVUS 



last collection from South Uganda, C. alhicollis is recorded 

 from Mulema, by error, as C. crassirustris. 



Genus II. COEVUS. 



Bill, tarsi and feet black and strong ; culmen curved, and of about the 

 same length as the tarsus ; nostrils always covered with thick bristles in 

 all the Ethiopian species. Wing long and pointed, nearly twice the length 

 of the tail. Tail square or rounded, of twelve feathers. 



Corvus, Linn. S. N. (x.), p. 10-5 (1758) ; (xii.) i. p. 155 



(1766) (?) C. corax. 



Corone, Kaup. Naturl. Syst. p. 99 (1829) C. coronc. 



Pterocorax, Kaup. J. f. O. 185i, Suppl. p. Iv C. albus. 



Heterocorax, Sharpe, Cat. B. M. iii. p. 11 (1877) . . . C. capcnsis. 



Ehinocorax, Sharpe, i. c. p. 45 C. affinis. 



This is the most widely spread genus of the family, and is represented 

 in the Ethiopian Begiou by five species, three of which are confined to the 

 Ethiopian region. 



KEY TO THE SPECIES. 



a. Nasal-bristles mostly directed upwards affinis. 



b. Nasal-bristles all set Hat over the nostiils : bill less stout. 

 a^. Bill stouter. Nasal-bristles longer, extending over more 



than half the distance from the eye to tip of bill. 



a-. Plumage black and white albus. 



b'^. Plumage blackish, with no white ends to the feathers. 



a-^. Basal portion of all the feathers dusky lunbriiius. 



6 3. Basal portion of feathers of neck and chest pure 



white ; wing about 14 inches cdithcB. 



fei. Bill more slender. Nasal-bristles shorter ca2)CHSts. 



Corvus affinis. 



Corvus affinis, Eiipp. N. Wirb. Yog. p. 20, pi. 10, fig. 2, hecul (183o-40j 

 Massaicah, Shendi ; Dresser, B. Eur. iv. p. 559, pi. 262, figs. 5, 7 

 (1894) ; Shelley, B. Afr. I. No. 635 (1896); Kleinschmidt, J. f. 0. 

 1906, p. 83. 



Ehinocorax affinis, Sharpe, Cat. B. M. iii. p. 46 (ib77) ; Ecicben. Yog. 

 Afr. ii. p. 639 (1903) ; iii. p. 836 (1905) ; Neum. J. f. 0. 1'J(.5, p. 231 

 jV. E. Africa. 



Corvus brachjurus, Brehm. J. f. 0. 1854, p. 75. 



