15 



Robert Gurney, M.A., F.Z.S. 



On some Fresh-water Entomostraca from Ceylon. 



Major R. Meinertzhagen, F.Z.S. 



Notes on the Sitatunga or Marsh- Ante! ope of the Sess 

 Islands. 



The following Papers have been received : — 



R. I. PococK, F.R.S., F L.S., F.Z.S. 



On the External Characters of the Mongooses (Mungotidse). 



Major H. Muir Evans, M.D., R.A.M.C. 



The Poison- Organ of the Sting-Ray [Tri/gon pastinaca). 



Dr. J. C. MOTTRAM. 



An Experimental Determination of the Factors which cause 

 Patterns to appear conspicuous in Nature. 



The Publication Committee desire to call the attention of 

 those who propose to oflfer Papers to the Society, to the great 

 increase in the cost of paper and printing. This will render it 

 necessary for the pi^esent that papers should be condensed, and 

 be limited so far as possible to the description of new i-esults. 



Communications intended for the Scientific Meetings should 

 be addressed to 



P. CHALMERS MITCHELL, 



Secretari/. 

 Zoological Society of London, 

 Regent's Park, London, N.W, 

 JIarch 28th, 1916. 



