AVES. 
207 
compressed at the point; both mandibles convex, the upper 
covering the lower one; nostrils basal, lateral, partly concealed 
by feathers; tail very long and taperingj tarsus short; the hal¬ 
lux reversible; the anterior toes free; wings short; the third 
quill longest. 
Colias Capensis. —The Cape Coly. 
Plate LI. fig. 2. 
Body and tail ash-coloured above, cream-yellow beneath; outer 
edges of the exterior tail-feathers white; legs dusky. Six inches 
long. Inhabits the Cape of Good Hope. 
ORDER V.—ZYGODACTYLOUS BIRDS. 
Bill varied in form, more or less curved, sometimes much 
hooked ; and in other genera straight and angular; feet always 
with two toes before and two behind, the exterior hind toe fre¬ 
quently reversible. 
The toes being in pairs is a striking characteristic of this or¬ 
der. It is divided into two subdivisions. 
Sub-Division I.—Bill more or less curved; the exterior hind 
toe reversible in some species. 
Genus 1.—MUSOPHAGA. — Temminck. 
Generic Character. —Bill short, robust, broad ; ridge arcuated, 
notched at the point; tip of lower mandible angular; nostrils 
basal, frequently hid by feathers; legs strong; tarsus same 
length as the intermediate toe; the exterior reversible; lateral 
toes of equal length ; fourth and fifth quills longest. Sixteen 
inches long. Inhabits Africa. 
Musophaga Africana. — The African Touraco. 
Plate XLV. fig. 5. 
Bluish-green; head furnished with a helmet-shaped black 
crest; quill feathers crimson; tail bluish purple; abdomen, 
thighs, and under-coverts, brownish black. 
R 2 
