/ 



0L\r_ 



New Series, No. 157 (Vol. 40, Part 1). 



APRIL, 1897 



Price 10s. 



MAY 22 1897 



I 



■!■ M hi 



UARTERLY JOURNAL 



THE 



OP 



MICEOSCOPICAL SCIENCE. 



EDITED BY 



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



linacre Professor of Comparati-je jlnatomy, Felloiv of Merton College, and Honorary Ftllozv 



of Exeter College, Oxford ; Corresponding Member of the Imperial jicademy of Sciences 



of St. Petersburg, and of the ylcademy of Sciences of Philadelphia ; Foreign 



Member of the Royal Bohemian Society of Sciences ; Associate 



Member of the Biological Society of Paris. 



■WITH THE CO-OPERATION OP 



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



Fellow and Lecturer of Trinity College, Cambridge; 



W. F. R. WELDON, M.A., F.R.S., 



Jodrell Profeuor of Zoology and Comparative Anatomy in Uni-versity College, London; 

 late Fellow of St. John's College, Cambridge. 



WITH LITHOGEAPHIC PLATES AND ENGEAVINGS ON WOOD. 



LONDON : 

 J. «fe A. CHURCHILL, 7, GREAT MARLBOROUGH STREET. 



1897. 



Adiard aud Son, 



ni^ , 

 3'-^ 



[BHi'tliulumev Close. 



