108 Dr. G. Hartlaub on a new Barbet. 
Exped.) at Tette, both “much smaller than the southern bird, 
and somewhat differently coloured. Is this difference due to 
age ? ” All I can say is that the measurements taken by 
Dr. Reich enow of a specimen of TV. caffer from Kakoma 
(5° 4 7 ' S. lat.) correspond exactly with those taken by me 
of a Cape specimen in the Bremen collection. Wing 100 mill., 
tail 95 mill., culmen 20 mill. 
2. Trachyphonus margaritatus, Rupp. 
Bucco margaritatus , Cretschm. Rupp. Atl. t. 20. 
Tamasia erythropyga, Ehrenb. Symb. Phys. t. vii. 
Capito margaritatus , Goff. Mus. Pays-Bas, Buccon. p. 67; 
Heugl. Orn. N.O.-Afr. p. 764; Finsch & Hartl. Ostafr. 
p. 506 (syn.) ; Marsh. Monogr. t. 57; Finsch, Trans. Zool. 
Soc. vii. p. 281; Oustal. Somal. Miss. Revoil, Ois. p. 7; 
Salvad. Ucc. dello Scioa, p. 70. 
Restricted to the warmer portions of N.E. Africa and East 
centr. Africa (south of 18° N. lat., Heugl.; of 16° N. lat., 
Brehm ) ; Bogosland, Adail and Danakil coast, Rupp., 
Heugl., Brehm, Antinori. Not to be found in the more 
southern districts on the White Nile, where TV. arnaudi 
takes its place. Never observed near Lado by Emin Bey. 
Common in all lowland localities, from the coast to Shoa: 
Antinori. 
Salvadori states that the black throat-spot is wanting in 
the female, but is constantly present in the younger bird. 
3. Trachyphonus arnaudi, Prev. & Desm. 
Micropogon darnaudi, Prev. & Desm. in Lefebr. Abyss. Ois. 
p. 133; Heugl. Ornith. N.O.-Afr. p.765 ; id. Ibis, 1861, 
pi. 5. 
Trachyphonus squamiceps, Heugl. System. Uebers. no. 482. 
Capito squamiceps, Goff. Mus. Pays-Bas, Buccon. p. 20; 
Marsh. Monogr. pi. 58; Hartl. Abhand. nat. Yer. Brem. 
vii. p. 113. 
Western coast of the Bahr-el-Djebel, between 7°-9° N. 
lat. : Heuglin. Upper White Nile : common about Lado, 
whence Dr. Emin Bey has sent many specimens. 
No difference in the colour of the sexes. 
