The Journal is issued on the second Wednesday of 

 February, April, June, August, October, and December. 



^1888. Parts. APRIL. { T ° Fvicet^ 



Hi 



Journal 



OF THE 



Royal 

 Microscopical Society; 



, CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 



AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 



ZOO LOG- ""ST A.2KTZD BOTANIT 



(principally Invertebrata and Cryptogamia), 



MICROSCOPY, Szc- 



Edited by 



FRANK 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., 



Ltcturer on Botany at St. Thomas's Hospital, Professor of Comparative Anatomy in King's College, 



JOHN MAYALL, Jun., F.Z.S., R. G. HEBB, M.A., M.D. (Cantab.), 



AND 



J. ARTHUR THOMSON, M.A., 



Ltcturer on Zoology in the School of Medicine, Edinburgh, 

 FELLOWS OF THE SOCIETY. 



a 



WILLIAMS & NORGATE, 



r LONDON AND EDINBURGH. 



'-- 



PRINTED BY WM. CLOWES AND SONS, LIMITED.] [STAMFORD STREET AND CHARING CROSS. 



*4T*- 



