214 ON THE CLASSIFICATION OF BIRDS. 
than the hind toe and claw^ plumed half-way from 
the knees ; the scales irregularly hexagonal. Middle 
toe very long, exceeding the tarsus, even without 
including its claw ; lateral toes nearly equal, the ex- 
ternal shortest; external and posterior toes equal. 
Sole of the foot very broad, flattened, and without 
pads ; all the toes free. Tail broad, moderate, even. 
Claws slender, moderate. 
A, ciiculoides. West. Af. i. pi, 1. 
SuBPAM. ACCIPITRIN.^. Hawks, 
Bill short, suddenly curved from the base ; the upper 
mandible armed in the middle of the margin with a 
large, obtuse, rounded tooth, or festoon ; under man- 
dible truncate at the tip ; cere moderate. Feet mode- 
rate ; tarsi in general smooth, naked. Middle toe 
lengthened ; hinder not much shorter than the inner. 
Anterior claws very unequal, the inner being almost 
twice the size of the outer, and nearly as strong as the 
hinder. Head small. Wings short ; the quills inter- 
nally emarginate at their base. Tail rounded. 
IcTiNiA, Vieillot. Bill small, thick ; a small, angulated, 
toothhke festoon towards the end 
of the cutting margin of the upper 
mandible ; cere small. Nostrils 
round. Feet very short. Tarsi 
not much longer than the hind toe 
and claw: anterior scales large, transverse; lateral 
and posterior scales sub-hexagonal, the latter very 
minute. Base of the tarsi and toes covered with 
very small reticulate scales. Toes short, strong, 
broad, lateral, unequal, the inner and hinder almost 
of the same length. YTings very loug ; the third and 
fourth quills the longest. Tail short, qven. (^^. 194 .) 
I ophiophaga. Wil.25.]. plumbea. Vieil. Am. pi. 10. 
Acoipiteb, MTllughby. Sparrow Hawks. Size small. 
Form slender. Nostrils oval, oblique. Bill much 
compressed ; the festoon in the middle of the cutting 
