Coleopterological Notices, V. 459 



less robust and looser club, with the terminal joint more conoidal 

 and more gradually pointed. 



Our representatives differ from the European species of the am- 

 Mguus type in their more convex body and head, and in having a 

 fine but strong carina extending from the transverse sulcus to the 

 pronotal base ; they should perhaps form a subgenus of Bibloplectus 

 and mav be recognized as follows : — 



Sides of the prothorax parallel and nearly straight in middle two-thirds of 

 the length. 

 Size more minute, about 0.65 mm. in length ; pronotum scarcely punctu- 



late riificeps 



Size appreciably larger and stouter, more than 0.7 mm. in length ; pronotum 



rather strongly punctate Integer 



Sides of the prothorax not parallel ; size still larger, rather more than 0.8 

 mm. in length ; surface smooth, polished and subimpunctate throughout. 



leviceps 



The species from Michigan, described by LeConte under the 

 name inieger, seems to be distinct from the more southern riifi- 

 ceps and I take pleasure in restoring it to its true position. Judg- 

 ing by the type of leviceps, which I have before me, the measure- 

 ments given in my original description are too great; it is possible 

 that the larger specimen represents a different species. 



TRIMIOPLECTUS Brendel. 



I have not seen the type recently published by Brendel under 

 the name obsoletus, but according to the description and figures, it 

 represents a widely distinct genus, singularly combining the char- 

 acters of Trimium and Euplectus. The author placed with obtiO- 

 letus several other species, such as arcuatus and ruficeps, which 

 are however in no way very closely related. The elongate protho- 

 rax and basal segment of the abdomen, the latter with an unusually 

 broad pubescent impression, reminding us of some species of Rame- 

 cia — where however the basal segment is never elongate, — the head 

 in the form of "an equilateral triangle with arcuate corners," and 

 the sexual modifications at the ventral apex, as figured, form a com- 

 bination of characters w^hich render it impossible to discuss its true 

 relationships without further study. The tarsal claw probably has 

 an extremely minute or obsolete appendage as in Actium and Trimi- 

 opsis, in the neighborhood of which it is probably most fittingly 

 placed. The name selected by Dr. Brendel is certainly appropriate. 



