Genus RHYTIDOCEROS

Casque small, low, rounded, and apparently composed of imbricate plates, covering the basal portion of the culmen, their upper edges forming alternating furrows and ridges, which are curved forward in the middle and backwards at the sides. These ridges are wanting in the very young and increase in number to 7 or 8 with age. Chin and throat naked, forming a pouch. Commissure much worn in old birds, but not nearly so much broken away as in Aceros. Feathers of crown and nape lengthened and loose-textured, forming a crest.

Three species occur in the Eastern part of our area; the only other form known, R. plicatus, is Papuan.

Key to the Species.

a. Base of both mandibles with transverse ridges in adults : wing 17-20……………….B. undulatus, p. 147.
b. Base of both mandibles smooth
a1. Wing 14 to 17……………….R. subruficollis, p. 148.
b1. Wing 11 to 12……………….R. narcondami, p. 149.

BookTitle: 
The Fauna Of British India including Ceylon and Burma
Reference: 
Blanford, William Thomas, ed. The Fauna of British India: Including Ceylon and Burma. Vol.3 1895.
Title in Book: 
Genus RHYTIDOCEROS
Book Author: 
William Thomas Blanford
Year: 
1895
Page No: 
146
M_ID: 
9672
M_SN: 
Rhyticeros
Volume: 
Vol. 3
Term name: 
id: 
1460

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