I, 
Journal 
OF THE 
Royal 
Microscopical Society 
CONTAINING ITS TRANSACTIONS AND PROCEEDINGS, 
AND A SUMMARY OF CURRENT RESEARCHES RELATING TO 
zooiL.oa-’Y 
(principally Invertebrata and Crjrptogamia), 
<scc. 
Edited by 
F. JEFFREY BELL, M.A., 
One of the Secretaries of the Society 
and Professor of Comparative Anatomy and Zoology in King's College ; 
WITH THE ASSISTANCE OF THE PUBLICATION COMMITTEE AND 
A. W. BENNETT, M.A., B.Sc., F.L.S., i JOHN MAYALL, Jun., F.Z.S., 
Lecturer 07t Bota7iy at St. Tho77tas's Hospital, | K. O. HEBB, M.A,, M.D. {Cantab.)^ 
AND 
J. ARTHUR THOMSON, M.A., 
LecUirer 07i Zoology m the School 0 / Medicme, Edmburgh, 
FELLOWS OF THE SOCIETY. 
FOR THE YEAR 
1890. 
Part 1. 
PUBLISHED FOR THE SOCIETY BY 
WILLIAMS & NOR GATE, 
LONDON AND EDINBURGH. 
