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BULLETIN 720, U. S. DEPARTMENT OF AGRICULTURE. 



Table II. — Items of anirnal food identified in stomachs of mallard ducks and the number 

 in which found — Contixiued. 



Kind of food. 



Total number of stomachs examined 



Class Insecta (Insects)— Continued. 

 Order LEPIDOPTERA (Butterflies and Moths). 

 Ceratocampidfe. 



A nisota sp. (pupae of oak caterpillars) 



Xoctuidse (cutworms) 



PyraUdse 



Tineidae 



Unidentified moths 



Unidentified cocoons • 



Unidentified chrysalids 



Unidentified caterpillars 



Order COLEOPTERA (Beetles). 



Unidentified beetles 



CicindeUdse (tiger beetles) 



Carabidee (ground beetles). 



Anomoglossus pusillus 



Bembidium nigripes 



Bembidium versicolor 



Bembidium sp 



Clivina bipustulati 



DyscMrius sp 



Galerita sp 



Harpalus autumnalis 



Lebia analis 



Lebia ornata 



Lebia sp 



Loxandrus veloi 



Oodes fluvialis 



Platynus striatopunctatus 



Scarites subterraneus 



Scarites sp 



Unidentified 



Haliplidae (crawling water beetles). 



Haliplus punctatus 



Haliplus triopsis 



Haliplus sp 



Peltodytes pedunculatus 



Peltodytes sp 



Unidentified 



Dytiscidae (predacious diving beetles). 



Aciliusfralernus 



Agabus punctulalus 



Canthydrus bicolor 



Canthydrus puncticollis 



Canthydrus unicolor 



Canthydrus sp 



Celina grossula 



Calambus sp 



Colpius inflatus 



Colymbetes sp 



Copelntus glyphicus 



Coptotomus inlerrogatus 



Common 

 mallard. 



1,725 



135 

 1 



1 

 1 



Black 

 duck. 



