~ U2 — 



than the females, and have closer longitudinal streaks on the 

 underparts. 



Heuglin (Orn. Nordostafr. I. p. 489) cites, with reference 

 to the colour of the lower tail-coverts, "subcaudalibus albidis" 

 and Reichenow (op. cit.) also says that they are white, and 

 the same writer, in fact. (Mitt. Zool. Mus. Berlin 1910 — 11, 

 p. 223) considers that affinis cannot be separated from the 

 western corvina. However, in these specimens the colour varies 

 from pure white or greyish to brownish white, i. e. the same 

 colour as the breast. 



Wing, tarsus, 



118, 120, 121, 122, 124, 125 mm. 30—32 mm. d^cT ad. 



122, 122, 123, 124, 124, 125 mm. 30—32 mm. 99 ad. 



cfcT 97, 115, 9 107 mm. 30—31 mm. juv. 



Irides greyish brown; bill yellowish; legs greyish green-dark 

 lead grey. 



Corvidae. 



Corvus albus P. L. S. Muller. — Rchw. II. p. 634. 



Corvus scapulatus Chubb: Ibis 1909, p. 172. 



5 (5(5 ad. 18. and 25. 8.; 2 QQ ad. 18. and 25. 8. Kisumu. 



Very common around Kisumu, where at that time of the 

 year it appeared in flocks, sometimes amounting to 20 birds and 

 upwards. I often saw it in the company of Neophron monachus 

 and sometimes they sat in fraternal harmony in the tree-tops. 

 I saw this specieo several times running about on the shores of 

 Victoria Nyanza, where it fed on the dead fish thrown up by 

 the waves. 



Both 9 specimens are moulting and 2 of the males as well. 

 The former have a wing-measurement of 



350, 355 mm. and tarsus 58 mm. 



These two are young birds which have almost completely 

 assumed the plumage of the adult. Here and there on the neck 

 and head the first brownish feathers are seen among the blue- 

 glossy, new feathers. 



The two males in moult have a wing measurement of 

 340, 357 mm, and tarsus 60, 64 mm. 



The three remaining males measure in the wing 368, 385, 

 385 mm., tarsus 62, 63, 63 mm. 



These figures are considerably higher than, for instance, 

 Reichenow's (op. cit.) 310—370 mm., Zedlitz's (J. f. 0. 

 1911, p. 2) 322, 342, 355,352,365,380 mm., K lei nsc hmi dt's 

 (J. f. 0. 1906, p. 91) 315-377 mm. 



Even the length of the tarsus in the present case is greater. 

 (Reichenow gives the tarsus to 55 — 60 mm.). 



Irides dark-brown ; bill and legs black. 



