THE OLFACTORY SENSE OF COLEOPTERA, 



445 



Table II. 



Summary of Experiments to Determine the Location of the Olfactory 

 Organs in Coleoptera. 



Species. 



Experiment and Behavior of 

 Insects Tested. 



Average 

 Reaction Time. 



For 

 Three 

 Odors. 



Sec. 



For Six 

 Odors. 



Sec. 



Average Length 

 of Life in 

 Captivity. 



Days. 



Harpalus 



pennsylvanica. 



Harpalus 



caliginosus. 



Epilachna 

 borealis. 



Chaulcognathus 

 pennsylvanica. 



Passalus 

 cornutus. 



Cotinis nitida . 



Euphoria 

 sepulchralis. 



Cyllene rohinia . 



Unmutilated. Normal in be- 

 havior 



Antennae pulled off. Normal in 

 behavior 



Elytra and wings pulled off. 



Slightly abnormal in behavior . 



Elytra and wings pulled off and 

 pores on legs covered with 

 vaseline. Slightly abnormal 

 in behavior 



Unmutilated. Normal in be- 

 havior 



Antennae pulled off. Slightly 

 abnormal in behavior 



Unmutilated. Normal in be- 

 havior 



Antennae pulled off. Slightly 

 abnormal in behavior 



Elytra and wings pulled off 

 Slightly abnormal in behavior 



Unmutilated. Normal in be- 

 havior 



Antennae pulled off. Slightly 

 abnormal in behavior 



Unmutilated. Normal in be 

 havior 



Antennae pulled off. Slightly 

 abnormal in behavior 



Unmutilated. Normal in be 

 havior 



Antennae pulled off. Normal 

 in behavior 



Unmutilated. Normal in be- 

 havior 



Antennae pulled off. Normal in 

 behavior 



Unmutilated. Normal in be 

 havior 



Antennae pulled off. Slightly 

 abnormal in behavior 



Elytra and wings pulled off 

 Slightly abnormal in behavior 



9-S 



S-i 



13-0 



16.9 



4.2 

 16.4 



13-8 

 30.8 

 31-3 



2.8 

 2.8 



3-0 

 30 



5-0 

 5.6 



3-6 

 4-3 



5-4 

 3-0 

 9.8 



16.5 

 16.1 

 17.7 



24.1 



3-2 



3-3 



8.0 

 8.3 



61.0 + 



58.0-f 



9.0 



Used below 

 18.0 



Used below 



22.0-1- 

 2.0-1- 



3-2-. 

 1-3; 



Used below 

 12. 5 



Used below 

 12. a 



Used below 

 20.0 



10.4 

 S-o 



4.2 



