QUARTERLY JOURNAL 



OF 



MICROSCOPICAL SCIENCE : 



EDITED BY 



E. RAY LANKESTER, M.A., LL.D., F.R.S., 



Fellow of Exeter College, Oxford, and Jodrell Professor of Zoology in University 



College, London ; 



WITH THE CO-OPEEATION OF 



W. T. THISELTON DYER, M.A., C.M.G., F.R.S., 



Assistant Director of the Royal Gardens, Kew ; 



E. KLEIN, M.D., F.R.S., 



Joint- Lecturer on General Anatomy and Physiology in the Medical School of 

 St. Bartholomew's Hospital, London ; 



H. N. MOSELEY, M.A., LL.D., F.R.S., 



Linacre Professor of Human and Comparative Anatomy in the University of Oxford, 



AND 



ADAM SEDGWICK, M.A., F.R.S., 



Fellow and Assistant-Lecturer of Trinity College, Cambridge. 



VOLUME XXVIII.— New Series. 

 W\i\ iafljognipbit plates anfa (Fngrabings on SBforob. 



LONDON: 

 J. & A. CHURCHILL, 11, NEW BURLINGTON STREET, 



1888. 



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