AVES. 
211 
Genus 10.—PTEROGLOSSUS. — Illiger. 
Generic Character. —Bill slender, longer than the head, arcu¬ 
ated above, externally serrated, and curved at the point; nostrils 
vertical, round, and open; tarsus same length as the external 
toe, the two anterior toes adhering to the second joint; wings 
short, vaulted, the first quills graduated; tail long and graduated. 
Pteroglossus maculatus. — The Spotted-Billed Aragou. 
Plate XLII*. fig-. 4. 
Head, back, sides of the neck, throat, and breast, deep black; 
wing-coverts saffron-yellow; upper parts and tail dusky sap- 
green ; head divided from the neck by a band of primrose-yel¬ 
low ; quills blackish-brown; the tail tipped with orange-brown. 
Length, including the bill, twelve inches. Inhabits Brazil. 
Genus II.—RAMPHASTOS.— Linnceus. 
Generic Character. —Bill broader than the head at the base, 
arcuated above, serrated at the edges, and somewhat incurvated 
at the point, thin, transparent, and cellular; nostrils vertical, 
concealed behind the horny mass, surrounded by a membrane; 
tarsus same length as the external toe ; the anterior toes adher¬ 
ing to the second joint; tail short. 
Ramphastos ariel. — The Brazilian Toucan. 
Plate XL. fig. 2. 
Upper surface, abdomen, wings, and tail, clear black; throat, 
neck, and cheeks, orange-yellow, with a straw-coloured border 
beneath ; skin around the eyes red; a crimson band across the 
breast, as are also the upper and under tail-coverts; betwixt 
the bill and head a black line, bounded by a yellow band; upper 
edge of the bill pale blue, other parts deep black; irides bright 
blue; legs and feet gray, claws black. Length, including bill, 
eighteen inches. Inhabits Brazil. 
Genus 12.—CROTOPHAGA.— Linnceus. 
Generic Character. —Bill short, thick, compressed, upper 
mandible carinated, the edges angulated; nostrils basal, ovate, 
lateral; legs slender ; the tarsus smooth, longer than the exter¬ 
nal toe; wings short, convex, the first quill short, the second 
