oe FALCONIDAE 173 
> — 
the tail shewing five black bands; H. infuscatus, of New Britain, 
is a darker race. Regerhinus uncinatus, and the larger R. mega- 
rhynchus, found from Central America to Bolivia and Brazil, are 
dusky slate-coloured with a white tail-bar; &. wilsoni, of Cuba, 
has’ a yellow bill; &. (Leptodon) cayennensis is glossy black, with 
erey head, wing and tail-bands, and white lower surface. Immature 
birds are brown, with rufous and white streaks or bars below. 
Sub-fam. 6. alconinae.-—The true Falcons are remarkable for 
a notched maxilla, while Harpagus and the crested Baza, aberrant 
members of the group, and sometimes classed with the Kites, exhibit 
two “teeth.” b. ophotes, of India, Ceylon, and the Malay countries, 
is greenish-black above, varied with white and chestnut on the 
wings; the fore-neck being white, and the breast shewing a band 
of black above one of chestnut, which is barred with buff towards 
the black vent. B. verreauxi, occurring from the Zambesi to 
Natal, is dark brownish-grey, with four black bars on the white- 
tipped tail, and rufous bands across the white breast and under 
wing-coverts ; B. cuculoides, of West Africa, having the latter plain 
rufous. The somewhat similar 2. subcristata occupies North-East 
Australia, 2. rufa inhabits the Moluccas and Papuasia, B. timor- 
laensis. Timor-laut, B. erythrothoraa Celebes and the Sula Islands, 
bL. magnirostris the Philippines, Bb. borneensis Borneo, B. leucopais 
Palawan, &. swmatrensis Sumatra, Tenasserim, and Sikkim, 2. 
ceylonensis Ceylon and South-East India, b. madagascariensis 
Madagascar, and £&. reinwardti, with grey-barred breast, the 
Moluccas, Timor, and Papuasia. Comparatively lttle is known of 
the habits of these shy forest forms, which occasionally soar, feed 
upon the ground on chamuaeleons, grasshoppers and other insects, 
build small nests, and lay about three whitish eggs with brown 
markings. Harpagus diodon, of British Guiana and Brazil, is grey, 
with brown wings and tail barred with whitish, white throat 
with a black streak, rufous thighs and under wing-coverts. 
Hf. bidentatus, extending from Panama to Brazil and Peru, has 
chestnut under parts, H. fasciatus being hardly separable. 
Of the tiny eastern “ Finch-falcons,” Miewohierax fringillarius, 
inhabiting the Malay Peninsula and Great Sunda Islands, is bluish- 
black, with rufous throat and abdomen, the breast, forehead, a stripe 
down each side of the neck,and partial bars on the wings and tail 
being white. It is a bold dashing species, which feeds upon insects 
and birds—even as large as quails, and lays four white eggs in holes 
