STUDIES OF NORTH A^IERICAN WEEVILS. 



By W. DwiGHT Pierce, 



Of the Bureau of Entomology, U. S. Department of Agriculture. 



While in Washington during the winter of 1908-9 it was my pleasure, 

 through the courtesy of Dr. L. O. Howard and Mr. E. A. Schwarz, 

 to study the collections of weevils in the U. S. National Museum. 

 The following notes present the records of all determined specimens 

 in the collections of North American weevils as they are at present 

 arranged in those groups preceding the true Curculionidse. 



The most recent writers on the Rhynchophora seem to agree in 

 the main in considering only four families — Curculionida?, Anthri- 

 bidae, Brenthidse, and Ipidse (Scolytidae). This arrangement necessi- 

 tates the subdivision of the Curculionidae into a very large number of 

 subfamilies. In all probability each of these families will soon be 

 raised to superfamily rank, and the tribes of LeConte and Horn 

 will in many cases become families or subfamilies. 



Recognizing the Curculionidse as a family at present, I shall fol- 

 low Sharp and Champion in the use of groups where LeConte and 

 Horn used tribes. The order of these groups is kept practically as 

 now recognized in America. 



Family CURCULIONID^. 



Subfai^ily R,H:iN"0]VXA.CKRIN"^E:. 



KEY TO GENERA. 



Maxillary palpi filiform and flexible Rhinomacer Fabricius. 



Maxillary palpi normal Diodyrrhynchus Schonherr. 



Genus RHINOMACER Fabricius. 



KEY TO SPECIES OP RHINOMACER. 



Pubescence long and coarse. 



Prothorax not longer than wide pilosus LeConte. 



Prothorax longer than wide elongatus LeConte. 



Pubescence short and fine. 



Prothorax evenly rounded from base, considerably narrower than elytra, 



comptus LeConte. 

 Pubescence long and sparse, head very convex, eyes protuberant. 6om6i/rons LeConte. 



Proceedings U. S. National Museum, Vol. 37— No. 1708. 



325 



