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296 which MM. S. Geoffroy St. Hilaire and Duvernoy have founded a series of elaborate articles upon the Osteology and Anatomy of the Anthropoid Apes, and his labours have been rightly commemorated in the specific title of a new Bat—the Epomophorus Franqueti—the largest and finest member of this peculiar group of African frugivorous Chiroptera, which has lately been described and figured by Mr. R. F. Tomes in the Zoological Society's Proceedings, and dedicated to its discoverer.

Chimpanzee, whose brain is described in the ensuing pages, came into my possession within twenty-eight hours of its death; and the cranium having been opened without delay, and the brain placed immediately in strong spirits, the state of preservation of this organ is very perfect.

The animal was a young male, in excellent condition, and apparently free from disease. From the vertex to the heel, it measured 2 feet 4 inches; from the vertex to the ischial tuberosities, 1 foot 6 inches. The fore hand was 5 inches, and hinder hand 5 inches in length: the fingers were nearly as long as the palm; the toes were not webbed at their base. The distance from the vertex to the chin was 6 inches; from the vertex to the auditory meatus, 2 inches; the circumference of the cranium, just above the ears, was 14 inches; the length of the ears, which strikingly projected away from the sides of the head, was 2 inches. The temporary teeth were all present, much discoloured, and much worn, but not even the incisors were loose. In the lower jaw, the first permanent molar was well through the gum on the left side, but that tooth was still partially covered on the right: the corresponding teeth of the upper jaw were still beneath the swollen gum; so that, whatever the fact may be worth, the same lateness of eruption of the upper teeth in comparison with the lower, as is observed in man, obtained in this animal. The hair was a brilliant black, and the colour of the iris a bright hazel. The total weight of the recent animal was 16 lbs. and 8 oz. avoirdupois.

Weights of the Encephalon and its parts. The entire brain, including a portion of the medulla and cord, extending inch below the pons, together with the pia mater and cerebral arachnoid, but