Elliot, Monograph of the Bucerotidae (additional images)
Plate (I)
Bucorvus abyssinicus.
Plate (II)
Bucorvus pyrrhops.
Plate (III)
Bucorvus cafer.
Plate (L)
Tockus semifasciatus.
Tockus fasciatus.
iv
ix
xxxv cropped
xxxvii
cropped
Plate V
Buceros sylvestris.
VII
viii
xi
Plate (XII)
Anthracocerus convexus.
xiii
cropped
see page 2
xiv
xlvi
xv cropped
Plate [XX]
Penelopides manillae.
Plate [XXXIII]
Pholidophilus sharpii.
xxi
Plate [XVII]
Cranorrhinus corrugatus.