226 Natural History Bulletin. 



Trogositid^. 



Calitys scabra TJmnh. One example, smaller than the 

 average, was taken from an old stump. 



Elaterid^. 



Tharops ruficornis Say. Found running over a fallen 



trunk of cottonwood. One example. 

 Cryptoiiypnus nocturnus Esch. Several examples were 



found under a dry log, on top of the hill at the lower end 



of the Canon. 



Elater behrensii Horn. One specimen was given me by 



a miner. 

 Atmous ferruginosus Esch. Rare, on herbage or %ing. 

 CoRYMBiTES uMBRicoLA Esc/i. One Specimen, without notes. 



Buprestid^. 



Melanophila atropurpurea Say. Rare, in the camp. 



BupRESTis FASciATA var. LANGii Alaiiu. A specimen of this 

 species was given me by Jules Carle, a miner; he took it 

 somewhere on the river, but whether at the Canon or 

 farther up is uncertain. 



Lampyrid^. 

 Podabrus scaber Lcc. One example. 



Malachiid^. 



Dasytes hudsonicus Lee. Two or three specimens were 

 found on the tents. 



SCARAB^ID^. 



Aegialia rufescens Horn. One specimen at the Canon, 

 under leaves; three or four more were found farther up 

 the river, beneath a chjp of wood half buried in the sand. , 



Aegialia cylindrica Eseh. Rare, among dead leaves in 

 the river bottom. 



