THE INVERTEBRATA , 



Jl Manua/ for the Use of Students '^(a^ 



by 

 L. A. BORRADAILE 



Fello<vo of Sel^m College, Cambridge 



and 



F. A. POTTS 



Felloe of Trinity Hall, Cambridge 



with Chapters by 

 L. E. S. EASTHAM 



Professor of Zoology in the University of Sheffield 



and 



J. T. SAUNDERS 



Felloe of Christ's College, Cambridge 



NEW YORK: THE MACMILLAN COMPANY 



CAMBRIDGE, ENGLAND: AT THE UNIVERSITY PRESS 



1932 



