TSCHAGRA 361 
Genus IV. TSCHAGRA. 
Bill as in Laniarius, rather stout and a little compressed, notched and 
hooked; in other structural characters resembling Laniarius, but readily 
distinguished by its characteristic plumage, in which the greater part of the 
wings are rich chestnut. The sexes are alike and the tail-feathers are 
always strongly tipped with white. 
Type. 
Pomatorhynchus, (non Pomatorhinus Horsfield) Boie, 
Isis, 1826, p. 973 oye enn Laeschagra. 
Tschagra, Lesson, Traité d’Orn. p. 373 (1831) on tsenagna. 
Telephonus (non Telophorus una Swains. Class. B. 
ii. p. 219 (1837) : a 1) Lsenegalius. 
Harpolestes, Cab. Mus. Hein. i, p. 70 (1850) ey econ cscragra. 
There has been some controversy in regard to the name of this genus. 
English writers have usually used Telephonus and German writers Pomato- 
rhynchus. The former was used previously by Swainson under a slightly 
different form (Telophorus) for the Backbakiri, and the latter does not seem 
to have been intended by Boie for a new generic name at all; it was a 
misprint or an intentional correction of the name given previously by 
Horsfield to the scimitar-bills Pomatorhinus of the Oriental region. The 
oldest name about which there can be no dispute is therefore T'schagra 
of Lesson. 
This genus contains nineteen distinguishable forms. Highteen of them 
inhabit Tropical and South Africa and are found within the limits of the 
Ethiopian region. The remaining species 7’. cucullata is found in North 
Africa, in Algeria and Morocco; it is distinguishable from T. senegala only 
by subspecific characters. 
KEY TO THE SPECIES. 
a. Crown black. 
a1, Central tail-feathers faintly but distinctly cross- 
banded with dusky. 
a?. Under parts washed with grey ...... . . senegala. 
62. Under parts milky-white : remigialis. 
61. Central tail-feathers plain, dusky to Blacks, “not cross- 
banded, under tail-coverts grey, white tipped. 
c*. Larger, wing about 3:4; darker above 7. « « erlangert. 
d?. Smaller, wing about 3:0; paler above . .. . . habessinica. 
e*, Smaller, wing about 3:0; darker above ee) en DerCualts 
be Crown brown. 
ct. No black band down the centre of the crown. 
