86 Coleopferological Notices, III. 



Intermediate joints feebly obconical, much more than twice as long as 

 wide ; prothorax much shorter and more transverse, distinctly narrower 



than the base of the elytra 10 perforatus 



Third joint (male) but slightly longer than the second and rather less than 



one-half as long as the fourth 11 Clirticollis 



Antennae shorter, about two-fifths as long as the body. 



Pronotum rather finely punctured, strongly but broadly rounded at apex. 



12 obscurus 

 Pronotum shorter, coarsely punctate, broadly, feebly arcuate at apex, the 

 sides less convergent from the basal angles ; size much smaller. 



13 communis 



8 — Eyes large, separated by a distance which in neither sex exceeds one-half 



of their width ; antennae generally notably long ; basal joint of the hind 



tarsi usually much longer than the remainder 9 



Eyes small or moderately large, always separated by more than one-half of 

 their own width, usually similar in the sexes ; antennae generally short ; 



basal joint of the hind tarsi variable ." 14 



9 — Pronotum finely punctate 10 



Pronotum coarsely punctate 13 



lO — Pronotal punctures very densely crowded, the interspaces not distinct... 11 

 Pronotal punctures dense but not in close contact, the interspaces distinct. ..12 



H — Elytra polished, the punctuation rather sparse 14 discrepans 



Elytra dull and alutaceous. 



Larger species, not less than 7 mm. in length. 



Punctures of the elytral intervals very fine, feeble and moderately dense ; 

 abdomen not noticeably more densely punctate along the middle in the 



male 15 grandicollis 



Punctures of the intervals fine but deep, excessively dense ; abdomen very 



densely punctate along the middle in the male 16 apaclieaiius 



Small species, not exceeding 4 mm. in length 17 exiguus 



12 — Color pale ochreous testaceous throughout ; posterior femora unusually 

 robust ; antennae very long, much more than one-half as long as the body. 



18 1 1 el vimas 

 Color piceous-black, the posterior femora normal. 

 Elytra not more than twice as long as wide. 



Head polished, very finely and sparsely punctate behind ; antennae longer ; 



size larger 19 porosicornis 



Head coarsely, deeply, more densely punctate ; antennae shorter, the joints 



less elongate 20 intermedins 



Elytra distinctly more than twice as long as wide ; body elongate, parallel. 



21 prolixus 

 13 — Body elongate or oblong. 

 Antennae less than one-half as long as the body ; very large species. 



22 occidentalis 

 Antennae more than one-half as long as the body in the male, notably shorter 

 in the female. 



