38 



Bulletin of the Brooklyn Entomological Society Vol. XVI 



A MALFORMATION IN LACHNOSTERNA. 



By Wm. p. Hayes, Assistant Entomologist, Kansas State 

 Agricultural Experiment Station.^ 



While rearing white grubs and beetles of the genus Lach- 

 nosterna from material collected in the fields, an unusual mal- 

 formation of the prothorax of an adult Lachnosterna crassissima 



Fig. I. 



Blanch, came under the writer's observation. The specimen was 

 collected in the larval stage behind the plow in sod-land on the 

 campus of the Kansas State Agricultural College on August 12, 

 1920, along with several hundred other grubs. It was placed 



1 Contribution from the Entomological Laboratory, Kansas State Agri- 

 cultural College, No. 60. This paper embodies the results of some of the 

 investigations undertaken by the writer in the prosecution of project No. 

 100 of the Kansas Agricultural Experiment Station. 



