1901.] ON THE HAIRS OF EQtrUS BTTROHBLLI AND E. ZEBEA. 87 



1. BOTHRIONEUEON YEJDOYSKTANUM Stolc. 



B. vejdovskyanum, Stole, S.B. Bohm. Gres. 1885, p. 647; id. Abh. 

 Bohm. Ges. (2) vii. p. 43 ; Beddard, Mouogr. 01ig._1895, p. 269. 



Bothrioneianim vejdovshyanum, Michaelsen, " Oligoehaeten " in 

 Tierreich, 1890, p. 54. 



Body coA'ered with papillae. Male pores single and median in 

 xi. Clitellum xi., xii. Au integumental vascular network present. 

 Genital seta present on xi. Spermatophores numerous, attached 

 to body-wall in neighbourhood of male pore. 



2. BoTHBioisrEUBON AMEEiOANUM Beddard. 



B. americanum, Beddard, Ann. Nat. Hist. (6) xiii. p. 206 ; Hamb. 

 Magalh. Sammelreise, Naiden &c., 1896, p. 6 ; Monogr. Olig. 1895, 

 p. 269. 



Bothrioneurwn americanum, Michaelsen, " Oligocha^ten," Tier- 

 reich, 1900, p. 54. 



Male pores paired on xi. Clitellum xi., xii. An integumental 

 vascular network present. No genital setse. Spermatophores 

 absent (?). 



3. BOTHRIOlSrEURON IRIS, U. Sp. 



Male pore single and median on xii. Clitellum xii., xiii. No 

 integumental vascular system. No genital setse. Spermatophores 

 only present to the number of one. 



February 19, 1901. 

 Dr. Henry Woodward, F.B.S., Yice-President, in the Chair. 



Mr. r. E. Beddard, F.R.S., exhibited the skin of a female Monkey 

 {Cercopitliecus schmkltl) 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 

 mammse, that of the right side, was fully as large as the normal 

 manomee. 



Dr. W. G. Bidewood exhibited under the microscope mounted 

 slides of the hairs of two Zebras, Equus hurchclli 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 

 a letter addressed by Prof. J. C. Ewart to Mr. Beddard, who had 



