Coleopterological Notices, III. 87 



Ferruginous, the elytra black in apical two-thirds 23 dorsalis 



Piceous-black throughout 24 discretus 



Body oval, the elytra in the middle much wider than the prothorax, the sides 



almost continuous in curvature with those of the latter... 25 COIivexilS 



14 — Form oval, the elytra in the middle much wider than the prothorax, the 



sides arcuate and subcontinuous with those of the latter 15 



Form oblong or oblong-oval, the elytra subequal to or slightly wider than the 

 prothorax, with the sides parallel and straight or very nearly so, and the 

 humeri generally narrowly rounded for a slight distance to the base of the 



prothorax 16 



15 — Elytra piceous-black, the head and prothorax more or less rufo-ferrugi- 

 nous and dull. 



Eyes separated by much less than their own width 26 deiiSUS 



Eyes separated by distinctly more than their own width.. ..27 rilficollis 

 Color uniform throughout. 



Punctures of the elytral striae very coarse, rounded, perforate. 



Antennae less than one-half as long as the body 28 dissensiis 



Antennae long, distinctly more than one-half as long as the body. 



29 seriatus 



Punctures of the elytral striae fine, linear 30 testaceus 



16 — Punctures of the elytral intervals fine and rather sparse, the elytra 



somewhat strongly shining 17 



Punctures of the elytral intervals rather deeper, very dense, the lustre gener- 

 ally dull throughout, the elytra rarely slightly polished 20 



JLK — Elytra not at all wider than the prothorax 18 



Elytra wider than the prothorax, very slightly so in tenellus, but otherwise 



distinctly 19 



18 — Prothorax slightly inflated toward base and rather wider than any part 

 of the elytra. 

 Elytra with distinct series of punctures ; color piceous-black ; head dis- 

 tinctly, rather closely punctate 31 rotundicollis 



Elytra with scarcely a trace of punctured series or impressed lines ; color 



pale ; head extremely sparsely punctured 32 iiiqililinilS 



Prothorax not inflated toward base and equal in width to the elytra ; antennae 

 very stout, compressed, and attenuate toward apex, at least in the female. 



33 fusicornis 

 19 — Antennae fully one-half as long as the body, the latter elongate, parallel 



and depressed 34 nitidipennis 



Antennae distinctly less than one-half as long as the body, the latter strongly 

 convex. 

 Larger species ; pubescence long ; pronotal punctures very coarse and 



densely crowded *35 inaeqiialis 



Smaller species, the pubescence moderate in length ; pronotal punctures 

 finer, not in mutual contact at least toward the middle of the disk. 

 Elytral striae extremely fine and scarcely at all impressed laterally ; body 

 slender 36 tenellus 



