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Macleay, a tribe living only upon putrid vegetable matter, and hiding themselves in their disgusting food, or in dark hollows of the earth, neither of these celebrated men suspected the absolute fact, elicited from our analogies of this group, that this very tribe constituted the sub-typical group of one of the primary divisions of coleopterous insects: nor had they any suspicion that, by the filthy habits and repulsive forms of these beetles, nature had intended that they should be types or emblems of hundreds of other groups, distinguished by peculiarities equally indicative of evil.

Sub-typical Ferae . . . Claws retractile; carnivorous. Natatorial Cetacea. . Pre-eminently aquatic; feet very short. Suctorial Glires . . Muzzle lengthened and pointed. Rasorial Ungulata . Crests and other processes on the head. He then takes the quadrumana, and places it in the following arrangement:

Swainson, the natatorial, or aquatic, are chiefly remarkable for their bulk, the disproportionate size of the head, and the absence, or slight development of the feet. They partake of the predaceous and destructive character of the adjoining sub-typical group, and the means of their predacity are generally found in the mouth alone.

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.

Swainson, "the singular threatening aspect which the caterpillars of the sphinx moth assume on being disturbed, is a remarkable modification of the terrific or evil nature which is impressed in one form or another, palpable or remote, upon all sub-typical groups; for this division of the lepidopterous order is precisely of this denomination.

But, on the other hand, if we take the rapacious or sub- typical group of birds, and look in it for the tribe which is again the rapacious or sub-typical group of its order, we may expect to find the qualities of that group exalted or intensified, and accordingly made the more conspicuous.

Here I may advert to a very interesting analogy between the mental characters of the types in the quinary system of zoology and the characters of individual men. We have seen that the pre-eminent type is usually endowed with an harmonious assemblage of the mental qualities belonging to the whole group, while the sub-typical inclines to ferocity, the rasorial to gentleness, and so on.

In canis, for instance, the bull-dog and mastiff represent the ferocious sub-typical group; the waterdog is natatorial; we see the speed and length of muzzle of the suctorial group in the greyhound; and the bushy tail and gentle and serviceable character of the rasorial in the shepherd's dog and spaniel.

The second was found to be inferior, or rather to have a less perfect balance of qualities; hence it was designated the SUB-TYPICAL. In this are comprehended the chief noxious and destructive animals of the circle to which it belongs.

Swainson calls them typical, sub-typical, natatorial, suctorial, and rasorial. Some of his illustrations of the principle are exceedingly interesting. He shews that the leading animal of a typical circle usually has a combination of properties concentrated in itself, without any of these preponderating remarkably over others.