SYSTEMATICALLY ARRANGED BY DR. T. T. KAUP. 
14, A. scotoptera, Kp.; F. scotopterus, Pr. Max. Beitr. iii. 204; 
F. lacernulatus, Temm. pl. col. 437,— Wings uniform ash-gray, 
without a black eye-region ; tarsus 78 mm. long. 
15. A. polionotus,.G. Gray ; Buteo melanotus, Vieill. ? —Tail 
with a 3” broad terminal band ; wings and body dark ash-gray. 
IV. Subfamily Aquininz. 
Pandion is the typical genus in this subfamily, which with the whole 
subfamily represents the Pelicanidee, because this genus feeds only 
on fish, and shows the most curved claws. 
I. Aquila. IT. Helotarsus. JIT, Circaétus. IV. Panpion. 
V. Haliaétus. 
J. Geyus AQUILA, Nov. Aver. 
The tarsus wholly feathered. The Malconine type. 
a. Subgenus Hierattus, Kp.— The bill more curved; 1-6 quill 
emarginated, large like a Buieo. The Falconine type. 
1. Aq. morphnoides, Gould, Birds of Austr. vii. 2. — The feathers 
of the occiput form a small crest. Australia, 
2. Aq. pennata, Cuy.; F. pennatus, Gmel.; pl. col. 33 ; I. minuta, 
Brehm. — Without a crest. Eastern Europe, Africa, Asia. 
b. Subgenus Pierodetus, Kp.—Lorum and eye-region naked ; 1-5 
quill emarginated ; claws very strong and curved; the first feather 
of the tail a little shorter than the middle feather. The Milvine 
type. 
3. Ag. vulturina, G. Gray; FP. vulturinus, Daud.; Vaill. 6; A. 
verreauaii, Less. Cent. Zool. f. 388.—Size of Ag. fulva; entire 
colour black. Africa, 
c. Subgenus Onychaétus, Kp.— Exterior toe yery short, with a 
short claw ; the claws long like a spur. The Accipitrine type. 
4. A. malayensis, G. Gray; Falco malayensis, Reinw.; pl. 
col. 117.— Black-brown, size of Ag. nevia. India and Indian 
Archipelago. 
d. Subgenus Aquila, Kp.—Bill more strait and moderately high ; 
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