422 Coleopterological Notices. 



Posterior angles of the prothorax somewhat prominent posteriorly ; size 

 larger ; strial punctures coarser, especially toward the sides ; wings 



narrow and scarcely two-thirds as long as the elytra 21 luoestllS 



Posterior angles not at all prominent, the base transverse and the sinuations 

 feebler ; strial punctures finer, not much coarser laterally ; form narrower, 

 more parallel and more depressed ; wings broad and fully four-fifths as 



long as the elytra 22 gregalis 



Elytral intervals rather coarsely and more densely punctate, the strial punc- 

 tures finer and very closely placed, the strife scarcely visibly impressed ; 



wings but slightly shorter tlian tlie elytra 23 Sll'bstriatus 



15. — Strial punctures very widely separated, the stri?B scarcely visibly im- 

 pressed ; form narrow and parallel ; 24 lepidllS 



Strial punctures approximate ; form more robust. 



Lustre dull and alutaceous, the strial punctures more perforate and abrupt, 

 forming very regular, even series, the punctui-es of the intervals rather 



denser 25 aeqiialis 



Lustre strongly shining. 



Size large, not less than 6 mm. at least in tlie female ; elytral strire ex- 

 tremely fine and feebly impressed 26 fuiieliris 



Size smaller always less than 6 mm. 



Wings wide, very small, shorter than the prothorax ; elytral strije dis- 

 tinctly impressed 27 pulTeruIeiltllS 



Wings very slender, at least as long as the prothorax ; elytral striie 



almost unimpressed. 



Wings with the lower margin strongly sinuate near the apex ; size 



larger ; form more convex and subcylindrical ....28 paralleltIS 



Wrings not sinuate near the apex ; size smaller ; form distinctly more 



depressed 29 iiiqiiisitiis 



16. — Third antennal joint shorter than the next two combined, subcylindrical 



or very feebly obconical 17 



Tliird antennal joint much longer than the next two together ; elytra with 

 coarse, deeply excavated, coarsely punctate grooves ; head dilated and 

 somewhat prominent before the eyes ; pubescence in the form of sliort, 



robust, suberect scales 22 



I'y, — Pubescence heterogeneous, consisting of smaller and darker, and longer 



and paler hairs, confusedly intermingled 18 



Pubescence homogeneous 19 



IS, — Strongly convex, brown ; punctures of elytral striae small, rather dis- 

 tant, feeble and scarcely distinguishable from those of the intervals. 



30 auripilis 

 Strongly depressed, brown ; punctures of the elytral striae distinct. 



31 iiitei'iuixtiis 



19. — Color dark castaneous to pale reddish-brown 20 



Color black 21 



20. — Pubescence darker, piceo-fulvous, inc()nsx)icuous ; form broad, oblong ; 

 prothorax very short and transverse'; eyes small 32 brevicollis 



