The Journal is issued on the second Wednesday of 

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



1888. Part 3. J0NE. { T °Prio"cf 58?" 



Journal 



OF THE 



Royal 

 Microscopical Society; 



CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 



AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 



ZOOLOG-Y .A-ISJ-ID BOTANY 



(principally Invertebrata and Cryptogamia), 



MICROSCOPY, Sea. 



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., P. JEFFREY BELL, M.A., F.Z.S., 



Lecturer on Botany at St. Thomas's Hospital, Prof essor of Comparative A natomy 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. 



WILLIAMS & NORGATE, 



LONDON AND EDINBURGH. ¥fc^\J 



«— — — -£$&* 



PRINTED BY \YM. CLOWES AND SONS, LIMITED,] (STAMFORD STREET AND CHARING CROSS. 



