LIST OF PLATES. 



PLATE I. (Frontispiece.) 



Dragon Flies. 



1. Anax .lUNirs. 



2. ^ESCIIXA IIER08. 



PLATE II. 



Transformations of Culex damnosus. 

 Head of Culex, cross sections of Proboscis. 



PLATE III. 



Longitudinal section of Poison Glands. 

 Front ^iIEW of Dragon Fly's Head. 

 Foot of Musca domestica. 



PLATE IV. 

 Larval stages and structure of Flies. 



PLATE V. 

 Larval stages of the Dragon Fly. 

 Seashore Mosquito. 



PLATE VI. 



Five species of Dragon Flies. 



PLATE VII. 

 Lantern and Pan. 

 Method of spraying Petroleum. 



PLATE VIII. 



Suspended Lantern avith Pan. 

 Eggs and Pupa of Mosquito. 



PLATE IX. 



Lantern and Pan on post. 

 Eggs of Dragon Flies. 



