30 W. G. DIETZ, M. D. 



of epistoma distinguish it from terebrans, with which it agrees in 

 the formation of the club, which at the same 

 time distinguishes this species from all the 

 following. The rostral carina is strongly 

 developed in some specimens, entirely obso- 

 lete in others. The thoracic punctures vary 

 greatly in size and density in difierent 

 specimens, and are always of varying size in 

 the same. The smooth thoracic line varies from being scarcely 

 noticeable to a strong carina. The asperities of the elytra are 

 feebly developed or else entirely replaced by punctures on the de- 

 clivity. In the latter case thestrise are very feebly impressed and the 

 surface more shining {% %). Length 5 — 7-5 nun. ; .20 — .30 inch. 



Specimens are before me from Alaska, Canada, New Brunswick, 

 Colorado, Utah, Florida (Pennsylvania D pmictatus). 



I am unable to separate D. pundatus Lee. from the j^resent species. 

 A sj)eciraen in Dr. Horn's collection is conspicuously clothed with 

 long grayish white hair, the color in all other specimens before me 

 being yellow. 



Very closely related to the present is the European species D. 

 inicans Kug., with which it agrees in the formation of epistoma and 

 antennae, except that in the latter the second joint of funicle is lon- 

 ger than the first. Save for the latter character, specimens in my 

 collection could not be distinguished from several sj^ecimens from 

 Sitkha in Mr. Dike's collection. In my specimens, however, the 

 front is strongly punctured, not granulate, and the thoracic punc- 

 tures generally coarser than in any specimen of rvfipes before me. 

 I add these characters as it is not unlikely that D. micans may yet 

 be found within our faunal limits, and thereby enable it to become 

 recognized. 



D. siniilis Lee. 



Readily distinguished by the formation of the epistoma. The 



median segment projects slightly beyond the lateral segments, the 

 sides are straight or nearly so, and con- 

 ■^"i' /TTs tinned to the front; the surface is more 



or less convex and roughened. The 

 lateral spaces are concave; the club is 

 transverse, and in the majority of speci- 

 mens before me, appears slightly emar- 

 ginate at tip. The head has tw^o median 



longitudinal impressions, often connected by an impressed line. 



