Journal 



OF THE 



Royal 

 Microscopical Society; 



CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 



AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 



ZOOLOCS-"^' .A.3Sr3D BOT-A-IST-S- 



(principally Invertebrata and Cryptogamia), 

 3>sd:iOI^OSOOI>'2', Ssa. 



Edited by 



PRANK CRISP, LL.B., B.A., 



One of the Secretaries of the Society 

 and a Vice-President and Treasurer of the Linnean Society of London ; 



WITH THE ASSISTANCE OF THE PUBLICATION COMMITTEE AND 



A. W. BENNETT, M.A., B.Sc, F.L.S., F. JEFFREY BELL, M.A., F.Z.S., 



Lecturer 071 Botany at St. Thomas's Hospital, Professor of Cotnparaiive Anatomy in King's College, 



JOHN MAYALL, Jun., F.Z.S., E. G. HEBB, M.A., M.D. {Cantab:), 



AND 



J. ARTHUR THOMSON, M.A., 



Lecturer on Zoology in the School of Medicine, Edinburgh, 

 FELLOWS OF THE SOCIETY. 



FOR THB YEAR 



1887. 



Part 1. 



PUBLISHED FOR THE SOCIETY BY 



WILLIAMS & NOR GATE, 



LONDON AND EDINBURGH. 



