SYSTEMATICALLY ARRANGED BY DR. T. T. KAUP. 
It is the genus Ibicter , which assumes to itself the fifth rank as 
genus, and to the Buteonince as subfamily. They show the lowest 
nature, and there are species among the Ibicter which devour not 
only carrion but even the excrements of animals. 
According to the analogies taken from Ibicter and the Vulturidce, 
it results, that in the subfamily of Falconince , the genus Ieracidea 
occupies the fifth rank, on account of its Ibicter - like construction 
of the foot, and feeding on carrion and caterpillars, and that Milvus 
among the Milvince, takes the same rank from its vulture-like hill 
and low buzzard-like nature or habits. 
We give to the buzzard-like Asturina among the Accipitrince, 
and to Ilaliaetus among the Aquilince the fifth rank, because in 
them the longest, straightest, and highest vulture-like bill, and the 
vulture and buzzard-like carriage and habits appear. 
According to the same principles, we have endeavoured to arrange 
the subgenera of the genera Falconidce, which to indicate here 
would be rather too prolix, but which will be done with more pro- 
priety in the following special descriptions. 
After the most careful critique of my system and researches, I 
have been unable to find out a sixth subfamily in a family, or a 
sixth genus in a subfamily, or a sixth subgenus in a genus, or a 
sixth true species in a subgenus. 
From the above investigations of the class of birds, there have 
resulted the following suborders, order, or families 
I. Family 
Zygodactyly. 
II. Suborder 
Obnithes. 
III. Suborder 
Gballatobes. 
IV. Suborder 
ICHTHYORNITHES. 
V. Family 
Gallinje. 
1. Psittacidce 
2. Cuculidse 
3. Rhamphastidae 
4. Picidae 
5. Musophagida? 
1. Conirostres 
2. Fissirostres 
3. Syndactyli 
4. Dentirostres 
5. Tenuirostres 
1. Pressirostres 
2. Longirostres 
3. Brevipennes 
4. Cultrirostres 
5. Macrodactyli 
1. Accipitres 
2. Longipennes 
3. Bracliypteri 
4. Totipalmati 
- t Lamelliros- 
' t tres 
1. Cracidm 
2. Columbidse 
3. Crypturidse 
4. Tetraonidse 
5. Pltasianida; 
In 
the Italic forms — I. 1, II. 2, 
Parrot, Swallow, Ostrich, 
III. 3, IV. 4 , V. 5— the fundamental types, viz — 
Pelican, and Hen— are to be looked for. 
118-31 
