136 
adult or very old birds. Referring to this question. Yon Heuglin says (Orn. N.O.-Afr. i. p. 203) : — 
“ Central- Abyssinian birds are, as a rule, larger than East- African examples. Hartlaub and Einsch 
separate the eastern M. frenatus from the western M. bullockii, as the latter never has the blue 
edging to the black cheek-patches ; but this does not, in my opinion, constitute any specific 
difference. According to Schlegel, only the very old males of M. bullockii have this blue border; 
and in any case there are specimens from East Africa in which it occurs only very slightly.” 
I find but little variation in the measurements of the various specimens I have examined, as 
will be seen by the following table : — 
Culmen. 
Wing. 
Tail. 
Tarsus 
in. 
in. 
in. 
in. 
Senegal ( Mus. H. E. Dresser) . 
.... 1-3 
3-75 
3-45 
0-40 
33 33 
.... 1-3 
3-9 
3-68 
0-45 
33 33 
.... 1-3 
3-9 
3-58 
042 
Gambia {Mus. Shelley) . . . 
39 
3-70 
0-40 
33 33 * 
.... 1-4 
3-9 
3-60 
0-42 
Senegal {Mus. Brit.) .... 
.... 135 
3-8 
3-60 
0-42 
33 33 .... 
.... 1-4 
3-7 
3-55 
0-40 
Shonga „ .... 
.... 1-4 
3-9 
3-75 
042 
33 33 «... 
.... 1-3 
4-0 
3-75 
0-42 
Senaar „ .... 
. . . . 1-4 
3-8 
3-70 
0-45 
The specimen figured and described is from Senegal and is in my own collection. 
In the preparation of the above article I have examined the following specimens : — 
E Mus. E. E. Dresser. 
c, b. Senegal, W. Africa {Verreaux). c. Senegal (R. B. Sharpe ). 
E Mm. Brit. 
a. River Gambia ( TVhitely ). b, $ . Senegal {Verreaux). c. Senaar {Dr. Kotschy). d, e. Shonga {Forbes). 
E Mus. Baris. 
a. White Nile {M. d’Arnaud). b. Senegal. 
a, b. Gambia {Moloney). 
E Mus. G. E. Shelley. 
