AEROCHARIS PREVOSTI 197 
The Red-tailed Vanga is confined to Madagascar. 
“These very small Shrikes,’ as Grandidier remarks, 
“frequent the forests, where they flit among the branches 
in pursuit of insects, especially beetles. They hunt in pairs 
and are silent birds. ‘The Betsimisarakas call them ‘ Kiboala,’ 
the Betsilos ‘ Totikirisoy,’ and the Antenales’ name for them 
s ‘Tsikateokateoka.’”’ According to the Rey. J. Sibree this 
bird is known to the North Sakalavas by the falioaing names : 
“Titikorosy,” “ Fitilitatema” and ‘“ Vorombenda.” 
The genus Hypophorba with H. ruticilla for type was 
founded on a female of the present species procured by Mr. 
Plant at Anooivarika. 
Genus VII. AH ROCHARIS. 
Bill, glossy blue, strongly hooked and notched towards the end of the 
upper mandible, much compressed at the sides beyond the culmen, and 
deeper than the skull owing to its being much raised and arched. Rictal 
and nasal bristles obsolete. Wing very similar in structure to those of the 
other members of the family. Tail shorter than the wing and rounded. 
Tarsi and feet blackish. In immature birds there are pale bars on the 
plumage. 
Type. 
Huryceros, Less. (non Fabr. Bee) Centur. Zool. 1830, 
fon Za 3 ce . . . A. prevosii. 
Aérocharis, Gistal, ‘Nat. Thierr. fi ix. (1848) . Seem ee O7CUOSIU. 
The genus is confined to Madagascar and is represented by one species. 
Aerocharis prevosti. 
Kuryceros prevosti, Less. Cent. Zool. p. 217, pl. 74 (1830) Madagascar ; 
Sharpe, Cat. B. M. ili. p. 326 (1877) ; Milne Edw. and Grand. Hist. 
Madag. Ois. i. p. 435, pls. 172-176 (1885); Sibree, Ibis, 1891, 
pp. 434, 442; Shelley, B. Afr. i. No. 661 (1896). 
Aérocharis prevosti, Sharpe, Handl. B. iv. p. 275 (1903). 
Adult. General plumage black, with the back, scapulars, wing-coverts, 
tail-coverts and two centre tail-feathers chestnut. ‘Iris pale brown; bill 
rich deep blue, feet blackish” (Grandidier). Total length 12 inches, culmen 
2:6 and 2°3, wing 5:9, tail 5-0, tarsus 1:2 and1:0. ¢ and ?, Madagascar. 
Immature. Entire upper parts dull rufous brown, with the primaries 
darker brown; under parts brown with some narrow white bars. 
June, 1912 14 
