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Show 1 901.] ON THE HAIRS OF EQUUS BURCHELLI AND E. ZEBRA. 87 1. BOTHRIONEURON VEJDOYSKTANUM Stole B. vejdovskyanum, Stole, S.B. Bohm. Ges. 1885, p. 647; id. Abb. Bohra. Ges. (2) vii. p. 43; Beddard, Monogr. Olig. 1895, p. 269. Bothrioneurum vejdovskyanum, Michaelsen, " Oligochaeten " in Tierreich, 1890, p. 54. Body covered with papillae. Male pores single and median in xi. Clitellum xi., xii. An integumental vascular network present. Genital seta present on xi. Spermatophores numerous, attached to body-wall in neighbourhood of male pore. 2. BOTHRIONEURON AMERICANUM Beddard. B. americanum, Beddard, Ann. Nat. Hist. (6) xiii. p. 206 ; Hamb. Magalh. Sammelreise, Naiden &c, 1896, p. 6 ; Monogr. Olig. 1895, p. 269. Bothrioneurum americanum, Michaelsen, " Oligochaeten," Tierreich, 1900, p. 54. Male pores paired on xi. Clitellum xi., xii. An integumental vascular network present. No genital setae. Spermatophores absent (?). 3. BOTHRIONEURON IRIS, n. sp. Male pore single and median on xii. Clitellum xii., xiii. No integumental vascular system. No genital setae. Spermatophores only present to the number of one. February 19, 1901. Dr. HENRY WOODWARD, F.E.S., Vice-President, in the Chair. Mr. F. E. Beddard, F.E.S., exhibited the skin of a female Monkey (Cercopithecus schmidti) from a specimen lately living in the Society's Gardens (received September 25th, 1900 ; died February 17th, 1901), which showed a pair of additional mammae below and slightly to the inside of the normal pair. One of the supplementary mammae, that of the right side, was fully as large as the normal mammae. Dr. W . G. Eidewood exhibited under the microscope mounted slides of the hairs of two Zebras, Equus burchelli and E. zebra, for comparison with the hairs of the recently described E. johnstoni Sclater (see P. Z. S. 1901, p. 50), and called attention to the fact that no differences in structure could be observed between the hairs of these three species. With reference to the same subject the following extracts from letter addressed by Prof. J. C. Ewart to Mr. Beddard, who had |