214 THE EVANESCENCE OF PATTERN IN THE SKINS OF ZEBRAS. 



I j^Tlie number of departures during the same period, by death 

 and removals, was 93. 



Amongst the additions special attention may be dii-ected 

 to:— 



1 Chimpanzee {Anthropopithecus troglodytes) 2i from "West 

 Africa, presented by Lieut.-Comm. J. W. Rainier, R.N., on 

 April 16th. 



1 Demidoff's Galago (Hemigalago demidqffi) J , from Obuassi, 

 Ashanti, presented by Dr. G. H. F. Spurrell on April 5th. 



2 Pandas {jElurus fulgens) S $ , from Nepal,' purchased on 

 April 12th. 



Dr. P. Chalmers Mitchell, M.A., D.Sc, F.R.S., Secretary to 

 the Society, showed the behaviour of a large series of Birds and 

 Mammals in the presence of living Serpents, and demonstrated 

 that, except in the case of the higher Monkeys and a few kinds 

 of Birds, there was no trace of instinctive dread of Serpents. 



Mr. D. Setii-Smith, F.Z.S., Curator of Birds, gave a lantern 

 exhibition of Birds now or recently living in the Society's 

 Oai'dens. 



June 5th, 1917. 



Dr. S. F. Harmer, M.A., F.R.S., Vice-President, 

 in the Chair. 



Mr. R. I. PocoCK, F.R.S., Curator of Mammals, exhibited on 

 behalf of Messrs. Rowland Ward Ltd. the skins of two Zebras, 

 shot by Mr. David Mackenzie at Gil- Gil in British East Africa, 

 which showed remarkable evanescence of pattern aftecfcing the 

 body, neck, and head and to a less extent the legs. The oblitera- 

 tion of pattern was carried to a much greater extent than in the 

 skin described by Prof. Ridgeway as representing a new variety 

 named E quits quagga goldfinchi. 



The two specimens were secured from a herd of normally 

 coloured Zebras of the East African race Equus quagga granti. 



