NOVITATES ZOOLOGICAE XXV. 1918. 357 



East African males 224-238, Abyssinian ones 228-245 mm. Thus Abyssinian 

 ones would be just as separable from E. African ones as the latter from W. 

 African examples — moreover, we doubt if the 212 mm. bu-d is really a male. 

 According to the senior author's measurements, the Tring Museum specimens 

 have the following wing-measurements : 



West African, including specimens collected by Rudolf Grauer between 

 Kagera and Kivu and at Bukoba, which belongs to the western fauna : 



(J $ (on account of some doubtful or unsexed specimens the sexes have not 

 been separated), 230, 231, 231, 231, 232, 236, 236, 236, 237, 240 (Senegal). 



East African (S. Abyssinia, Harar), collected by Oscar Neumann and 

 Zaphiro : 



(J$, 224, 228, 230, 231, 231, 241, 243, 244, 247. 

 North Abyssinian, Eritrea, collected by Gustav Schrader : 

 <J, 249, 249, 250, 255. 



? 233 (1 damaged, measure probable only), 236, 239, 242 mm. 

 We have thus everyTvhere much larger measurements than Mr. Claude 

 Grant, who probably measured in the old uncertain way, without stretching the 

 wing on the rule, and the difference between the West and East African ones 

 Ls doubtful, while the Eritrean form is strikingly larger : 

 W. Africa : 230-240. 

 E. Africa : (224 once), 230-247. 

 Eritrea : (233 ?), 236-255 mm. 



Moreover, Eritrean bii-ds are, as a rule, a little lighter on the underside, 

 but more so on the mantle and inner secondaries, also the outer grey upper wing- 

 coverts are a little lighter, and they are in the majority of specimens unspotted, 

 while they are sjjotted with white in nearly all specimens from West and East 

 Africa. 



There is no difference in the colour between the West and East African 

 birds. 



The birds from the White Nile must belong to the typical West African 

 guinea and cannot possibly be longipennis. Not only does the West African 

 Sudanese fauna in many cases reach across to the Upper Nile districts, but 

 Grant quotes a " male " (?) from the " Sudan " (by which is meant the Eastern 

 Sudan, south of Khartum) with a wing of only 219, which is below any of his 

 longipennis, and we have a $ from the Upper White Nile with a wing of 

 226 5 mm., which is a very small measurement. 

 We must therefore recognize : 

 C. guinea guinea L. — West Africa to Upper Nile. 



C. guinea longipennis Rchw. — East Africa to Southern Abyssinia. (Doubt- 

 fully separable.) 



C. guinea dilloni (Bp.). — Northern Abyssinia (Eritrea). 

 C . guinea uhehensis Rchw. — Uhehe. (Unknown to us.) 

 C guinea phaeonota Gray. — South Africa. 



There is no doubt as to the validity of Bonajjarte's name dilloni (Compt. 

 Rend. Acad. 8c. . Paris, xxxix. p. 1105. 1854, Abyssinia). The author, though 

 saying that he does not think he is justified in considering as belonging to 

 another .species the bii-ds collected by M. Dillon in Abyssinia, although they 

 were larger and finer than C. guinea, proposes for them the name " Uticioenas 

 dilloni 1 Bp.," and repeats this afterwards m his lists. 



