157 



oahuensis were obtained during five years collecting on Tan- 

 talus, Oahu, and these were always in the live wood of Pipturus 

 where it joins that which is dying. Two specimens of oahuensis 

 were bred from half dead Pipturus wood. It has not been 

 taken on any other island. AH the other species of Dryop- 

 tliorus named were taken and also bred in large numbers on 

 Oahu; but it has not yet been actually determined whether 

 all these species are peculiar to this island. 



PAMILY PKOTEKIIINIDAE. 



Proierhinus vestitus P. and P. blackhurni P. — Both com- 

 mon species and not altogether attached to Pipturus. Bred 

 from dying wood of Pipturus gathered on Tantalus, Oahu, "at 

 1800 to 2000 feet elevation. Also taken on Tantalus in situ 

 under dead bark of Pipturus. 



FAMILY ANOBIIDAE. 



Xyletobius walsingha7ni Perkins — A few specimens bred 

 from a trunk of dying tree on Tantalus. The largest species 

 of the genus occuring in these Islands. 



FAMILY CIOIDAE. 



Species of Cis and Apterocis were taken from under dead 

 bark of Pipturus on Tantalus, and also bred from the dying 

 wood gathered in the same locality at 1800-2000 feet elevation. 



FAMILY jVITIDULIDAE. 



Eupetinus impressus (Shp.) — Under decayed bark. 



FAMILY ELATERIDAE. 



An undetermined species under decayed bark ; also pupae 

 in the rotting wood. 



FAMILY COLYDIIDAE. 



jUitilissus aper (Shp.) — Under dead bark of Pipturus, at 

 2000 feet elevation on Tantalus. ^VTot uncommon under dying 

 or dead bark of Bohea and Straussia. 



