xxvm 



LIST OF ILLUSTRATIONS 



FACING PAGE 



Circus method of controlling fleas. 



Antenna of larva of Echidnophaga galli- 



naceus. 

 Larva of same. 

 Egg of Ctenocephalns felis ... ... 459 



Nerve ganglia of Ctenocephalus felis. 



Abdominal ganglia, highly magnified. 



Alimentary tract of Ctenocephalus felis. 



Chitinous spines from proventriculus. 



Undeveloped ovarian tube. 



Reproductive organs of Ctenocephalus 

 felis, male. 



Ovarian tube. 



Cross-section through proventriculus. 



Transverse section through upper end of 

 proboscis. 



Transverse section through base of pro- 

 boscis. 



Salivary glands of Ctenocephalus felis. 



Distal portion of salivary duct ... 470 



Conorhinus rubrofasciatus, female. 

 Conorhinus megistus, female ... 487 



Larva of Cimex rotundatus. 



Egg of Conorhinus rubrofasciatus. 



Larva of same. 



Second nymph of Cimex rotundatus. 



Second nymph of Conorhinus rubrofasci- 

 atus. 



Third nymph of Cimex rotundatus. 



Third nymph of Conorhinus rubrofasci- 

 atus ... ... 490 



1. Cimex rotundatus, female, ventral aspect. 

 Serrated hairs of Cimex. 



Cimex rotundatus, male, dorsal view. 

 Elytron of Cimex. 



Terminal segments of abdomen of Cimex 

 rotundatus, male ... ... 499 



Distal end of maxilla of Conorhinus ru- 

 brofasciatus. 



Distal end of mandible of same. 



Maxilla of same. 



Distal end of mandible of Cimex rotunda- 



tus. 



Fig. 4. Cross-section through proboscis of Cimex 

 rotundatus. 



