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GENERIC CIIARACTEES.
top, extends over tlie eyes, and returns to the base of the maxilla by a moderate curve. Nostrils
basal, exposed. "Wings long, reaching a short distance beyond the upper taii-coverts. Tail long,
much rounded; two median rectrices twice the length of the rest. Tarsi short, stout, covered
with strong scales. Toes stout. Claws strong, curved.
Genus V. ANTURACOCEROS.
Ilead covercd by a lengthened crest. Skin around eyes and space at base of mandible nude.
Bill long, abruptly curved at tip. Casque covers two thirds the length of maxilla, is compressed
laterally, extends over the head to above the eyes, and curving forwards returns to culmen by
an acute angle. Nostril on top of maxilla, at base of casque, small, round, exposed. "Wings
moderate ; secondaries as long as primaries ; third primary longest. Tail long, much rounded.
Tarsi short, stout, covered with strong scales. Toes short, stout. Claws curved, strong.
Genus VI. CRANORRUINUS.
Skin around eyes and on throat bare. Bill long, rather slender, graduating to a sharp
point, crossed at base by several prominent transverse ridges. Casque high, upright, keel- '
shaped, swollen posteriorly, llattcned anteriorly, covering nearly half the maxilla; curves
gradually from the highest point of the anterior terminus, backwards to centre of the head.
Wings ample ; secondaries nearly as long as the primaries. Tail long, rounded. Tarsi and
toes short, stoat, covered with strong scales. Claws stout and acute.
Genus VII. PENBLOPIBBS.
Ilead covered by a lengthened crest. Bill rather short ; base covered by a plate, on the
jnaxilla with broad transverse grooves, on the mandible with narrow diagonal grooves. Casque
low, compressed laterally ; rises at base and extends for two thirds the length of maxilla, and
terminates abruptly at a right angle to the culmen. Bare skin around eyes and at hase of
mandible. Wings long; fourth primary longest; first primary falcate. Tail long, slightly
rounded. Tarsi and toes short, stout, covered with strong scales ; outer and inner toes united
at base. Claws strong, curved, acute.
Genus VI I I . CERATOGYMNA.
Occij)ut crested. Side of face around the eye, throat and front of neck, with the exception
of a narrow line in the centre covered with short feathers, and large gular pouch naked. BUI
rather stout, very short. Culmen curved, especially at the apical third. Gonys nearly straight
until witliin a short distance of the tip, where it curves downward. Casque very large, flat on
its anterior face, kcel-shapcd on top, and swoUen towards its posterior margin; highest in front,
it curves rapidly downwards to above the eyes ; several longitudinal grooves run along the sides.
Wings ample, rather short. Tail long, much rounded. Tarsi and toes stout, short, strong.
Genus IX. SPHAGOLOBUS.
Head covered by a long bushy crest. Skin around eyes, sides of face, throat, and gular
pouch naked. Bill rather short, stout, pointed. Maxilla curved ; gonys nearly straight. Casque
very large, swollen laterally and rounded on top ; rises from the maxilla about one third its length
from tlie tip at a rather acute angle, curves backwards over the head, and returns to the maxilla
at a sharp angle. Wings rather long. Tail long, slightly rounded. Tarsi short, stout. Toes
rather long, stout. Claws strong, acute.
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