214 THE EVANESCENCE OF PATTERN IN THE SKINS OF ZEBRAS. 



The number of departures during the same period, by death 

 and removals, was 93. 



Amongst the additions special attention may be directed 

 to :— 



1 Chimpanzee (Anthropopithecus troglodytes) 2 > from West 

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

 April 16th. 



1 Demidoff's Calago (Hemigalago demidoffi) 3 , from Obuassi, 

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



2 Paudas (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. Seth-Smith, F.Z.S., Curator of Birds, gave a lantern 

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

 Gardens. 



June 5th, 1917. 



ft 



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 affecting 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 Equus quagga goldfinchi. 



The two specimens were secured from a herd of normally 

 coloured Zebras of the East African race Equus quagga granti. 



