1900.] OX MAMMALS FltOM MOUNT KENYA. 173 



Oligochaataare related to the marine Polychaeta, and in the position 

 of forms to be derived from them, it may be possible to compare 

 this caecum with the siphon of the Capifcellidse. 



(3) As to the Reproductive Organs, I have but little to add to 

 Benham's account. As he has observed, the anterior pair of sper- 

 mathecae are the smaller ; but I also found that corresponding to 

 this the posterior pair of spermiducal glands were smaller than 

 the anterior pair of those glands. I could find no diverticulum to 

 either pa ; r of spermatheeae, and no penial setae connected with 

 the male pores. 



4. List of Mammals obtained by Mr. H. J. Mackinder 

 during his recent Expedition to Mount Kenya, British 

 East Africa. By Oldfield Thomas. 



[Received February 15, 1900.] 



The Mammal-fauna of Mount Kenya, the highest mountain in 

 British East Africa, has hitherto been practically unknown, for 

 although Dr. Gregory collected a few specimens during bis ascent 

 in 1893, these have not hitherto been satisfactorily determined. 

 It has therefore been with great interest that I have worked out 

 the excellent collection obtained on the mountain during Mr. H. 

 J. Mackinder's recent successful expedition there, an expedition 

 of which he has himself given an account before the Geographical 

 Society '. 



The actual collecting was done by Mr. Mackinder's two 

 assistants, Messrs. Ernest Saunders and C. Camburn, and much 

 credit is due to them for the way in which they have succeeded 

 in making so admirable a collection uuder somewhat difficult 

 circumstances. In addition, some of the larger animals, including 

 the Mountain Dassies, were shot by Mr. Mackinder's colleague, 

 Mr. C. B. Hausburg, and bis Alpine guide, Cesar Oilier. 



The species of mammals obtained on Mount Kenya itself are 

 fourteen in number; and I have also added a list of those collected 

 at Nairobi, on the Uganda Railway, where the party remained 

 some little time. The whole series of skins has been acquired by 

 the British Museum. 



Of the special Mountain-mammals the most interesting is a 

 new Dassy, of a rock- and not forest-inhabiting group, which 

 appears to be isolated above the forest zone at 12,000-15,000 feet. 

 A second new Dassv, of the forest group, comes from 8000 feet. 



With the help of the fine collection of East African mammals 

 presented to the National Museum by Mr. F. J. Jackson, and 

 worked out by Mr. W. E. de Winton, the determination of the 

 present series has presented few difficulties, and I must record my 



1 See Geogr. Journ. xv. p. 453 (1900). 



