Hooting, of Owls, [401]

Hoplopterus, [269], [270];

H. cayanus, [276];

H. speciosus, [276];

H. spinosus, [276], [295];

H. ventralis, [276]

Hornbill, [376], [390] f., [391];

bill, [11], [390] f.;

habits, [390];

Helmet-, [393];