128 BIOLOGICAL SURVEY OF 



Byrrhidae. The Pill Beetles 



They live around the edge of water in the roots of grasses 

 and the way to take them is to dig or pull up roots, particu- 

 larly in sandy places and search for them there. 



Bi-RRHUS Linneaus 



B. AMERiCAiv^us LeC. (9869). Taken in logs Lake Wood, June 

 13. Corfield flying, July 7 ; S. W. Harbor, July 13 ; Green 

 Mt., Aug. 17. 



CytiLiUS Ericlison 



C. ALTERNATUs (Say) (9864). Fawn Pond on leaves under 

 water, June 30. Bar Harbor, June 10 (Br.). Xot common. 



OsTOMiDAE (Trogossitidae). The Grain and Bark-gnawing Beetles 



Eecent studies have lifted the curse that was on this family 

 for gnawing grain, as it appears that they are there to gnaw 

 the larvae of those that do. However, the best place to take 

 them is under bark, particularly where fungus is at work. 



Calitys Thomson 



C. scABRA (Thunb.) (9998). Taken from old fungus on stump 

 Bar Harbor, Oct. 7 (Br.). 



Thymalus Latreille 



T. MARGiNicoLLis Chcv. (10010). Bred from white birch fungus 

 Polyporus hetiiUnus, July 27. Common. 



Tenebroides Filler & Mitterpacher 



T. sp. Under bark of dead maple at the Tarn, May 23. 



NiTiDULiDAE. The Sap-feeding Beetles 



Any syrupy liquid with a fruit flavor will attract these, but 

 the best bait I have found is cantaloupe rind placed loose in 

 some paper on the ground in an open, but shaded, place. 

 Anything that is fermenting is good bait. 



