

^^Z A STUDENT'S TEXT-BOOK 



ZOOLOGY, 



ADAM SEDGWICK M.A. F.RS. 



FELLOW AND TUTOB OF TRINITY COLLEGE, CAMBRIDGE 

 AND HEADER OF ANIMAL MORPHOLOGY IN THE rNIVEESITY 



VOL. II 



SWAN SONNENSCHEIN AND CO. Ltt> 



iV^TF YORK: THE MACMILLAN 00. 

 1905 



