MONOGRAPH OF THE FALCONID/E, 
rhamus , on account of its wide deeply cloven jaw, dentated middle 
claw, and feeding on fish. 
After these the Totipalmati are the most fish-like forms, and 
they range, like the class of Pisces , in the fourth rank of the fourth 
order of Ichthyomithes . We have given to the Picidce among the 
Zygodactyli , the suborder Dentirostres among the second order 
Ornithes, the suborder Cultrirostres among the third order Gralla- 
tores, and the Tetraonidce among the fifth order Gallinee ; then to 
the family Gypaetidce, to the Aquilince, and among these to Pandion, 
and lastly, to the genera Falco, Elanus, Astur, Rostrhamns, &c., 
&c., the fourth rank, which, either as suborders, families, or genera, 
they should occupy. 
Having by closing our researches on the Pisces done with the ver- 
tebrate animals, there is yet remaining a class in the first subking- 
dom, in which the sexual or genital animals appear as the fifth order 
of mammalia in the Ruminantia , and in the fifth order of birds in 
the Gallince. We have defined the two higher and the following 
classes as follows : — 
!• Mammalia, by man, as eye, nerve, and head animals. 
II. Aves, by the swallow, as ear, respiration, and breast animals. 
III. Reptiles, as nose, vertebrae, and torso or body animals. 
1^ . Pisces, as tongue, stomach, belly, or tail animals. 
We recognized according to my definitions — 
I. The Zygodactylce, by the Psittacidce , as eye, nerve, head 
birds. 
II. The Ornithes, by the Hirundinidce, as ear, respirations, and 
breast birds. 
III. The Grallatores, by the Bvevipennes , as nose, vertebrae, and 
body birds. 
n . The Ichthyomithes, by the Totipalmati, as tongue, stomach, 
belly, or tail birds. 
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