HORIZILLAS. 257 
a Wren than those of the preceding genus; it frequents the same 
kind of forest as Zurdinu!us but may also be found in scrub and 
deserted clearings. It keeps much to the ground, on which it 
feeds in the same manner as the Seimitar-Babblers, turning over 
the leaves and scratching in the mould for insects. It has a 
sweet, chirping whistle which it utters as a call or when frightened 
or disturbed. It keeps in pairs, not in flocks, and is wholly 
insectivorous in its diet. 
Genus HORIZILLAS Oberholser, 1905. 
The genus Horizillas is remarkable for its lengthened wings 
and, in consequence, its comparatively short tail; the plumage is 
soft and silky. The two Indian species of the genus appear to 
be more arboreal than any of the preceding genera and to have 
somewhat the deportment of Bulbuls, The rictal bristles are very 
conspicuous on account of their length and the bill is short and 
straight. The legs and feet are weak for Zimaliune birds. The 
name Malacopterum Eyton is preoccupied as is Setaria Blyth *. 
Key to Species. 
A. Crown bright ferruginous ..... mln eee . H. magna magna, p. 257. 
B. Crown olive-brown .....-.-. Hale RAL alee H, magnirostre, p. 258. 
(263) Horizillas magna magna. 
THe ReD-HEADED Tree-BABBLER. 
Malacopterum magnum Eyton, P. Z.8., 1839, p. 103 (Malaya) ; Blanf. 
& Oates, i, p. 151. 
Vernacular names. None recorded. 
Description. Forehead and crown bright ferruginous, the an- 
terior feathers black-shafted and the posterior ones faintly edged 
with black ; lores and a broad supercilium grey, the middle of the 
feathers whitish; the whole nape black; ear-coverts fulvons- 
brown with pale shafts; the whole upper plumage fulvous-brown, 
tinged with ferruginous on the rump, upper tail-coverts and outer 
webs of the tail-feathers ; cheeks mottled grey and white; chin, 
throat and upper breast white, streaked with grey ; remainder of 
lower plumage grevish white. 
Colours of soft parts. Iris sienna-brown (young) to carmine or 
orange-red; bill dark horny-brown above, lower mandible pale 
plumbeous white; legs, feet and claws pale plumbeous blue to 
pale smalt-blue. 
Measurements. Length about 170 to 180 mm.; wing about 
84 to94 mm.; tail about 75 mm.; tarsus about 23 mm.; culmen 
about 20 mm. 
* See Oberholser, Smiths. Misc. Coll. 48, p. 64, 1905. 
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