1901.] ON MAMMALS TBOM UGANDA. 85 



May 21, 1901. 

 Dr. W. T. BlajStord, F.R.S., Vice-President, in the Chair. 



Mr. R. I. Pocock, F.Z.S., exhibited two nests of a tree Trap- 

 door Spider, brought by Mr. J. T. Maury from Rio Janeiro, 

 as an instance of the perfection of the instinct displayed by 

 these animals in the construction of their domiciles on the trunks 

 of trees. One of these nests was still tenanted by a living Spider 

 with her family. It was suggested that the Spider probably 

 belonged to the species known as Pseudidlops rastratus, described 

 in the ' Proceedings ' for 1889, p. 250, specimens of which had been 

 kept alive in the Insect House of the Society's Gardens. 



The following papers were read : — 



1. On the more notable Mammals obtained by Sir Harry 

 Johnsto 

 Thomas 



Johnston in the Uganda Protectorate. By Oldfield 



[Eeceived May 7, 1901.] 

 (Plate V. 1 ) 



The valuable scientific exploring and collecting work which 

 Sir Harry Johnston did in Nyasaland, during his residence there, 

 he has continued while acting as Special Commissioner in the 

 Uganda Protectorate. With his usual generosity he has sent all 

 the specimens obtained by him to the National Museum, and 

 I have had the pleasure of working out the Mammals. 



During the autumn of last year Sir Harry made an expedition 

 to investigate the Fauna and Flora of Mount Euwenzori, and 

 obtained a number of interesting forms, by far the most remark- 

 able of which is the wonderful new Mammal, of which Mr. Sclater 

 gave us an account at the last meeting (see above, p. 3). Other 

 specimens obtained at the same time were exhibited to the Society 

 by Mr. Sclater on March 19th (see P. Z. S. 1901, vol. i. p. 222), 

 but these he has been good enough to hand over to me, and au 

 account of them is included in the present paper. 



On this occasion it has not been thought worth while to record 

 all the mammals sent, and my notes are restricted to the rarer 

 and more remarkable forms. 



COLOBUS EUWENZOBII, sp. n. 



Two native skins ; Buamba Country, N.W. flank of Ruwenzori. 

 A black and white Colobus allied to G. palliatus and C. ango- 



Icnsis. 



Fur of back enormously long, longer than that of any known 



1 For explanation of tho Plate, see p. 87. 



