346 MEMOIRS ON THE COLEOPTERA 



middle; elytra short, much wider than the prothorax, three-fourths 

 longer than wide, parallel, rounding behind to the truncatures, the 

 outer angle distinct but not at all prominent; surface very coarsely 

 punctate, closely and confusedly toward the suture, more sparsely and 

 sublinearly elsewhere, piceous, with an oblique dense cinereous 

 fascia on each from just behind the humeri nearly to the suture 

 at basal third, also variegated with fusco-cinereous and blackish in 

 about apical third; inner ridge with asubbasal cluster of black hairs 

 and also three behind the middle. Length (9 ) 5-7 mm.; width 2.0 

 mm. Maine penicillatus Lee. 



Prothorax confusedly and rather coarsely rugose in sculpture; body a 

 little larger, notably more elongate, nearly black, the vestiture 

 almost as in penicillatus, the prothorax even a little more transverse, 

 subsimilar in the sexes, the lateral prominences similar, the tubercles 

 very much flatter and more diffuse and not so shining, being coarsely 

 punctured, the subdepressed median region wholly rugose, excepting 

 a small elongate-oval and feebly convex polished callus which is 

 abruptly denned on the median line near basal third; elytra as in the 

 preceding but more elongate, with the punctures equally close-set 

 but much less coarse, the outer angle at the apices rather more 

 prominent and sharply-marked, the truncatures more sinuate, the 

 antero-lateral fascia narrower though similar in position, the pos- 

 terior maculation nearly similar, the inner ridge similarly fasciculate, 

 except that there are always four or five fasciculate tufts behind the 

 middle. Length (cf 9 ) 54-6.2 mm.; width 1.75-2.0 mm. Colorado. 



carinatus n. sp. 



3 Elytra colored and fasciate nearly as in mixtus and similarly without 

 ridges, but with a longitudinal series of three fasciculate tufts of 

 short erect black hair on each, posterior to the fascia; elytral apices 

 truncate, the external angle acute and prominent, the sutural angle 

 obtusely rounded; decumbent hairs of the under surface very dense 

 at the apices of the abdominal segments. Length 13 mm.(?). 

 Arizona (Huachuca Mts.) arizonicus Schf. 



Elytra with an almost even convex surface, except in fastigiatus and 

 alaskamis, and strong punctures, confused suturally, sublineate 

 laterally and without trace of fasciculate tufts at any point, except 

 in alaskanus 4 



4 Outer angle at the elytral apices always sharply marked, sometimes 

 notably prominent posteriorly 5 



Outer angle very obtuse and more or less feebly defined, sometimes ob- 

 solete 8 



5 Size very small, piceous, sparsely pubescent; prothorax (cf) finely 

 rugose or (9 ) smooth, with the discal tubercles slightly prominent; 

 elytra testaceous, with nebulous fuscous maculation at the middle, 

 more densely cinereo-pubescent anteriorly, having three subelevated 

 discal lines, the intervals irregularly biseriately punctate; antennae 

 testaceous, fusco-annulate. Length 3.8 mm. From near the 

 headwaters of the Mississippi River parvulus Lee. 



Size generally much less minute, with a more sharply marked anterior 

 fascia of pale pubescence 6 



