XVI 



Zeuglodon, 481. 



Zeus faber, 227. 



Ziphius, 428. 



Zoanthidse, 36. 



Zoarces, 230. 



Zonotrichia albicollis. melodia, leuco 



phrys, graraiiiea, &c., 357. 

 Zoogeography, or the geogi-aphical 



distribution of animals, 7; survey 



of the geographical distribution of 



mammalia, 498-502. 

 Zoology, definition of, and intro- 



INDEX 10 ZOOLOGY. 



ductory remarks upon, 1; brief 

 outline of the liistory of the science 

 and of the principal systems of, 

 1-3; distinguished as general and 

 special, 3; various principles pro- 

 posed for the classification of ani- 

 mals, 4; important affinities be- 

 tween plants and animals, 4-6 

 — and essential differences be- 

 tween, 6; observations on the geo- 

 graphical distribution of animals, 

 7, 8 ; sketch of the orders of the 



animal kingdom based on the sys- 

 tem of Cuvier, 9-15; descriptive, 

 16. 



Zoophyta, the, why so called, 8; 

 what animals are included under, 

 9; orders of, 9; Cnvier's arrange- 

 ment of, 25 ; resemblance between 

 the, and the acalephae, 31 ; princi- 

 pal characters of, 33 ; Dana's classi- 

 fication of, 34. 



Zosterops, 340. 



Zygvena, 182 ; zygaenidie, ib. 



954 



-1-7-i. 



^lrf^»^ 



