RAMPHASTIDE, — PSITTACIDE. 299 
- outer quills sertanled and ‘cae pointed. Tail 
_ short, rounded. 
__ R. magnirostris. (Toco Auct.) Pl. Tucanus. Pl. Enl. 307. 
Ag Enl. 82. 
Prerocxossus, Illiger. Bill smooth, less compressed. 
_ Nostrils vertical, naked, round ; pierced on the upper 
surface of the bill, on the edge of the frontlet. 
ee short, rounded. Tail lengthened, graduated. 
. P. aracari. Pl. Enl. 166. 
Gould. Bill considerably attenuated ; — 
furnished with longitudinal grooves on the sides. 
Nostrils lateral, placed in a furrow, and on a line with 
the eyes. Rictus or gape wide, extending to beneath 
the eye. Wings rounded. Tail graduated. | 
A. sulcatus. Sw. Zool. Ill. i. 44. 
Scyturops, Latham. General structure of Pteroglossus ; 
but the margins of the mandibles are without teeth. 
Wings long ; the two first quills graduated ; the third 
longest. Tail long, graduated. Australia only. 
S. Australis. White’s Voy. pl. 5. 
ee PSITTACIDZA. Parrots. 
Bill very short: the upper mandible greatly curved over 
the lower, which is considerably shorter. 
Susram. MACROCIRCINZA. Macaws. 
Upper mandible greatly hooked ; lower mandible much 
higher than broad. ‘Tail very long, cuneated. 
Macrocircus, Vieillot. Size large. 269 
Orbits, and sometimes the face, ve , 
destitute of feathers. Nostrils con- is 
cealed. Notch in the upper man- “a 
dible obsolete ; the under remark- / ull 
ably short, but very deep.* (fig. 
269.) 
M. tricolor. Kuhl. Le Vaill. pl. 3. 
* The true characters of the subtypical group I am not sufficiently ac- 
quainted with ; but I am led to believe it is represented by those macaws 
which have the upper mandible conspicuously toothed, and the cheeks 
more or less naked. 
