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Show 1 9 0 4 .] ON THE HAND OF THE CHIMPANZEE. 2 6 3 '02 (a). B e n h am , W. B . " On the Old and some New Species of Plagiochceta," in Trans. N.Z. Inst. xxxv. p. 284. '02 (b). ------ " The Geographical Distribution of Earthworms, etc.," in Report A. A. A. S. Hobart, ix. p. 319. '02(c). ------ " Note on a neglected Tasmanian Earthworm," in loc. cit. p. 383. B o urne, A. G. " On certain Points in the Anatomy and Development of some Earthworms," in Quart. Journ. Micr. Sci. xxxvi. p. 25. F le tch er , W. " Notes on Australian Earthworms," in Proc. Linn. Soc. N.S.W. (ser. 2) 1886, vol. i. H utton, F. W. " Catalogue of the Worms of New Zealand," in Trans. N.Z. Inst. xi. p. 317, note. M‘Coy, F. ‘ Prodromus Zool. Victorias.' Decade I. 1878. M ich a e l se n , W. " Oligochasta," in Das Tierreich. 1900. S pen cer, W. B. " On the Anatomy of Megascolides australis," in Trans. Roy. Soc. Victoria, i. 1888, p. 3. ----- " Description of Australian and Tasmanian Earthworms, ' in Proc. Roy. Soc. Victoria, 1892, 1895, 1900. S w e e t , G. " On the Structure of the Spermiducal Glands, etc.," in Journ. Linn. Soc. (London), Zool. xxviii. 1900, p. 109. V ejd o v sk y , Fr. " Zur Entwickl. des nephrid. Apparates v. Megascolides australis," in Arch. f. mikr. Anat. xl. p. 552. November 29, 1904. G . A. B o ulen ger , Esq., F.R.S., Vice-President, in the Chair. Dr. Walter Kidd, F.Z.S., exhibited a drawing of the extensor surface of the hand of a Chimpanzee and made the following remarks:- In the course of an examination of the papillary ridges in some specimens of Anthropoid Apes and Monkeys certain groups of ridges were found on the extensor surface of the terminal phalanges of the hand, apparently identical with those of the palmar and plantar surfaces. Three specimens of Chimpanzee living in the Society's Menagerie were examined, of the ages 1 year 8 months, 2| years, and 6 years. In the oldest of these, " Mickie," the ridges were definite and well-developed on the 2nd, 3rd, and 4th digits on both hands; in the youngest specimen, " Jack," they were absent; and in " Jimmie," 2| years old, they were small and ill-defined, as if in the process of development. Direction of Ridges. Mickie. Ridges longitudinal and reaching to the matrix of the nail on the 2nd, 3rd, and 4th digits. |