HANDBOOK 



or 



ZOOLOGY 



BY 



J. VAN DER HOEVEN, 



PHIL. NAT. ET M.D. PKOFESSOE OF ZOOLOGY IN THE UNIVERSITY OF LEYDEN, KNIGHT OF THE ORDER 

 OF THE DUTCH LION AND OF THE SWEDISH ORDER OF THE POLAR STAR, MEMBER OF THE ROYAL 

 ACADEMY OF SCIENCES, OF THE DUTCH SOCIETY OF SCIENCES AT HAARLEM, OF THE IMPERIAL 

 LEOPOLDO-CAROLINE ACADEMY, OF THE IMPERIAL SOCIETY OF NATURALISTS AT MOSCOW, COR- 

 RESPONDING MEMBER OF THE BRITISH ASSOCIATION, OF THE ROYAL ACADEMY OF SCIENCES AT 

 TURIN, OF THE IMPERIAL ACADEMY OF MEDICINE AT PARIS, ETC. 



Trado quae potui. 



IN TWO VOLUMES. 



VOLUME THE SECOND. 



( VERTEBRATE ANIMALS. ) 



TRANSLATED FROM THE SECOND DUTCH EDITION 



BT 



THE REV. WILLIAM CLARK, M.D. F.R.S. &c. 



LATE FELLOW OF TRINITY COLLEGE, AND PROFESSOR OF ANATOMY 

 IK THE UNIVERSITY OF CAMBRIDGE. 



PRINTED AT THE UNIVERSITY PRESS, 



FOR 



LONGMAN, BROWN, GREEN, LONGMANS, AND ROBERTS, 

 LONDON. 



1858. 



