SPECIES. 



105 



and Andrena), bugs {Euschistus^ Corimeldena^ etc.), and flies (Tipulidae 

 and Callijjhora vomitoria^ the caddis-flies and larvas of saw-flies). 

 The caterpillars were cutworms {Agrotis and Neplielodes molans)^ and 

 in several cases such bristly larvae as Sjnlosotna. The parasitic wasps 

 were Ichneumonid* and scoliid wasps {TipMa hiornata). Ants are 



Fig. 38.— Mockingbird. 



a characteristic element of the food. In the present instance they 

 included Lasius^ Tetramorium.^ Formica siibsericea^ and Camponotus 

 pennsylvanicus. The coleopterous food is interesting because four- 

 fifths of it consisted of injurious beetles. The list of beetles identified 

 is as follows: 



Lachnosterna. 



Anomala lucicola. 



Dichelonycha. 



Onthophagus pennsylvanicus. 



Aj)hodius. 



Odontota dorsalis. 



Longitarsus. 



Hxmonia nigricornis. 



Corymbites pyrrhos. 



Monocrepidius auritus. 



Anisodactylus rusiicus. 



Bracliylohus lithophilus. 



Cychrus stenostomus. 



Harpalus. 



Chlxnms. 



Staphylinus cinnamopterus. 



Chauliognathus. 



Hister. 



Tenebrionidse^ 



Epiaeriis imbricatus. 



Tanymecus confertus. 



Were cherries, blackberries, and raspberries raised for market on 

 the farm in large quantities, the host of catbirds with their highly 

 frugivorous habits might do harm, but as this is not the case they not 

 only cause no loss but are beneficent through their destruction of 

 insect pests. 



The brown thrasher {Toxostoma rufum, fig. 39), which is not common 

 on the Marshall Hall farm, is somewhat more insectivorous than its 

 relative the catbird. Only one stomach was collected. This contained 

 black raspberries, cherries, a cricket, a ground-beetle, and a May- 



