62 



BULLETIN 862, U. S. DEPARTMENT OF AGRICULTURE. 



Table II. — Items of animal food identified in the stomachs of the ducks treated in this 

 bulletin and number of stomachs in which found — Continued. 



Kind of food. 



Gad- 

 wall. 



Bald- 

 pate. 



Green- 

 winged 

 teal. 



Blue- 

 winged 

 teal. 



Cinna- 

 mon 



teal. 



Pin- 

 tail. 



Wood 



duck. 





417 



255 



653 



319 



41 



790 



413 



Class Insecta — Continued. 



Order COLEOPTERA— Continued. 



Gyrinidae (whirligig beetles). 



Unidentified 



3 











1 







3 















3 



Hydrophilidae (water scavenger beetles) . 



3 





5 



11 



1 



16 



8 



Unidentif.ed egg-cases 



3 













2 

















2 



2 















7 











3 



2 



- 













1 













2 

















1 



1 

 8 

 1 





Berosus striatus 















Berosus sp 



4 



7 



7 



6 



1 



4 







Philhydrus nebulosus 













2 



PMlhydrus sp 









1 







2 



Hydrobius sp 



1 













Cercyon sp ' 



1 

 1 













Staphylini dae (rove beetles) 



1 



1 



1 



2 







2 



2 



Coccinellidae (ladybugs). 



Unidentified 























Hippodamia sp 













1 



Cucujidae (flat bark beetles). 













1 





Dermestidae (larder beetles). 





1 

 1 

























Histeridae. 







1 









Nitidulidae. 













1 





1 







1 





' 





Parnidae. 





1 









Heteroceridae. 







2 









Elateridae 











1 



1 



Lucanidae. 













2 



Scarabaeidae (leaf chafers). 







1 







2 



11 









1 











1 

 1 







1 



1 





1 



2 



1 

 1 





1 









2 















1 



