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The tribes of the cheirotheria I arrange as follows: Typical Bimana. Sub-typical Simiadae. Natatorial Vespertilionidae. Suctorial Lemuridae. Rasorial Cebidae. Here man is put into the typical place, as the genuine head, not only of this order, but of the whole animal world. The double affinity which is requisite is obtained, for here he has the simiadae on one hand, and the cebidae on the other.
I propose that the typical order of the mammalia should be designated cheirotheria, from the sole character which is universal amongst them, their possessing hands, and with a regard to that pre-eminent qualification for grasping which has been ascribed to them an analogy to the perching habit of the typical order of birds, which is worthy of particular notice.
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