11 



3. R. Lydekker. 



(«) A rai-e Beaked Whale. 



(6) Age Phases of the Rorqual, 



4. P. Chalmers Mitchell, jNI.A., D.Sc, Hon.LL.D., F.R.S., 



F.Z.S. 



On Longevity and Relative Viability in Mammals and Birds ; 

 with a Note on the Theory of Longevity. 



The following communications have been received : — 



1. Mrs. E. AY. Sextok . 



On the Amphipod Genus Leptoolteirus. 



2. William Mcoll, M.A., D.Sc, M.B . 



On Three new Trematodes from Reptiles. 



3. C4. Stewarlson Bhady, M.D., LL.D., D.Sc, F.R.S., C.M.Z.8 . 



Notes on Marine Marine Ostracoda from Madeira. 



4. J. Lewis Poxegie, M.A., F.L.S., F.Z.S., and F. W. Smalley , 



On Colour and Colour-pattern Inheritance in Pigeons. 



Communications intended for the Scientific ]\Ieetings should 

 be addressed to 



P. CHALMERS MITCHELL, 



Secretary. 



Zoological Society of Loxdok, 

 Regent's Park, Loxdon, N.W. 

 February 2Sth, 1911. 



