FOOD HABITS OF SHOAL-WATER DUCKS. 



59 



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. 



Bue- 



winged 

 teal. 



Cinna- 

 mon 

 teal. 



Pin- 

 tail. 



Wood 

 duck. 





417 



255 



653 



1 

 6 



319 



41 



790 



413 



Class Insecta — Continued. 

 Order MALLOPHAGA (Bird Lice). 





Order HETEROPTERA (True Bugs). 

 Unidentified bugs 







2 





3 

 33 



15 



Corixidae (water boatmen). 



25 



9 



15 





32 



43 



1 



11 





Belostomatidae (giant water bugs). 







1 



37 



Nepidae (water scorpions). 









2 



Naucoridae (creeping water bugs). 



Peloconsfemoratus 









2 

 13 



1 





2 







6 







43 



Notoneetidae (back-swimmers). 



Notonecta sp 







2 















1 









4 



11 







17 



Saldidae (shorebugs). 



1 











Veliidae (broad-shouldered water striders). 



Microvelia sp 













7 

















4 



Gerridae (water striders) . 



Gerris marginata 















1 





4 





4 



2 







29 



Hydrometridae. 



Hydrometra sp 







4 



Miridae. 





1 

























1 



Mesoveliidae. 









2 







6 



Hebridae. 



Hebrus sp 













1 



Reduviidae (assassin bugs) 















2 



Coreidae. 



Darmistus sp 















1 



Pentatomidae (stink bugs). 



1 













7 



Menecles incertus 







1 









Eusehistus variolarius 













1 



Euschistus sp 















2 



Corimelaenidae. 



Corimelaena nitiduloid.es 









1 









