QUARTERLY JOURNAL 
OF 
MICROSCOPICAL SCIENCE. 
EDITED BY 
Sim RAY LANKESTER, K.C.B., M.A., D.Sc., LL.D., F.R.S., 
HONORARY FELLOW OF EXETER COLLEGE, OXKFORD; CORKUSPONDENT OF TUE INSTITUTE OF FRANCE, 
AND OF THE IMPERIAL ACADEMY OF SCIENCES OF 8ST. PETERSBURG, AND OF THE ACADEMY 
OF SCIENCES OF PUILADELPIIA, AND OF THE ROYAL ACADEMY OF SCIENCES 
OF TURIN; FOREIGN MEMBER OF THE ROYAL SOCIETY OF SCIENCES OF 
GOTTINGEN, AND OF THE.~ROYAL BONEMIAN SOCIFTY OF SCIENCES, AND 
OF THE ACADEMY OF THE LINCEI OF ROME, AND OF THK AMERICAN 
ACADEMY OF ARTS AND SCIENCES OF BOSTON 4 ASSOCIATE OF THE 
ROYAL ACADEMY OF BELGIUM, HONORARY MEMBER OF THE 
NEW YORK ACADEMY OF SCIENCES, AND OF THE 
CAMBRIDGE PHILOSOPUICAL SOCIETY, AND OF 
THE ROYAL PHYSICAL SOCIETY OF EDIN- 
BURGH, AND OF TUE 
BIOLOGICAL SOCIETY OF PARIS, AND OF THE CALIFORNIA ACADEMY OF SCIENCES OF SAN FRANCISCO, AND 
OF THE ROYAL ZOOLOGICAL AND MALACOLOGICAL SOCIETY OF BELGIUM; 
CORRESPONDING MEMBER OF THE SENKENBERG ACADEMY OF FRANKFURT-A-M; 
FOREIGN ASSOCIATE OF THE NATIONAL ACADEMY OF SCIENCES, U.S.. AND MEMBER OF THE 
AMERICAN PHILOSOPHICAL SOCIETY 3 
HONORARY FELLOW OF THE ROYAL SOCIETY OF EDINBURGH 
LATE DIKKCTOR OF THE NATURAL HISTORY DEPARTMENTS OF THK BRITISH MUSKUM; LATE PRESIDENT oF THE 
BRITISH ASSOCIATION FOR THE ADVANCEMENT OF &CIENCES LATE KFULLERIAN PROFESSOR OF 
PHYSIOLOGY IN THK ROYAL INSTITUTION OF GREAT BRITAIN 5 
LATE LINACRE PROFESSOR OF COMPARATIVE ANATOMY AND FELLOW OF MERTON COLLEGE, OXFORD. 
WITH TILE CO-OPERATION OF 
ADAM SEDGWICK, M.A. F.RS., 
PROFESSOR OF ZOOLOGY AND COMPARATIVE ANATOMY IN THE UNIVERSITY OF CAMBRIDGE 3 
SVADINIONS “dl, IBUECIKGSOUN, Wilke, J Sie, 
BEYER PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF MANCHESTER 4 
AND 
E. A. MINCHIN, M.A., 
SOR OF PROTOZOOLOGY IN THE UNIVERSITY OF LONDON, 
VOLUME 52.—New Sertzs. 
With Aithographic Plates und Cext-Higures. 
PROF 
“LONDON: 
J. & A. CHURCHILL, 7, GREAT MARLBOROUGH STREET, 
1908. 
