no MEMOIRS ON THE COLEOPTERA 



very small, rather narrow, convex, strongly shining, black above 

 and beneath, the epipleura rufescent except basally; legs obscure 

 rufous, the femora black, the slender antennae and palpi obscure 

 testaceous; head barely more than half as wide as the prothorax, 

 the eyes moderate, prominent, the foveae minute but rather linear, 

 not circularly perforate; mandibles rufescent, black at apex; pro- 

 thorax nearly one-half wider than long, subparallel, the sides broadly, 

 rather strongly rounded, slightly converging and becoming nearly 

 straight basally, the angles slightly obtuse but only very narrowly 

 rounded at tip; apex broadly sinuate, with broadly rounded angles, 

 evidently narrower than the transverse, finely and strongly margined 

 base; surface steeply declivous at the sides, the edge finely reflexed, 

 the extremely fine gutter not varying in form from apex to base, 

 though just visibly coarser medially, the lateral parts almost equally 

 convex throughout the length; fine median stria rather broadly 

 impressed, conspicuous and almost attaining the apex; elytra slightly 

 less than one-half longer than wide, slightly wider than the prothorax, 

 obtuse at apex, with very feeble though evident sinus, the parallel 

 sides evidently arcuate; striae rather fine, feebly impressed, the 

 scutellar moderate in length, the intervals very feebly convex, 

 polished, the puncture somewhat behind apical fourth; basal joint 

 of the hind tarsi distinctly shorter than the fifth. Length (c?) 

 6.7 mm.; width 2.65 mm. Colorado (Eldora) . . . .paululus n. sp. 

 Pronotal foveae extremely feeble, linear but sometimes barely traceable. 38 



38 Legs dark rufous in color, the femora black when mature 39 



Legs deep black throughout, the tarsi more or less paler, especially the 



two anterior of the male 4 



39 Form oblong-oval, rather convex, a little broader in the female, 

 polished black above throughout, the elytra ( 9 ) densely subsericeo- 

 opaque; under surface and epipleura deep black, shining; antennae 

 and palpi pale testaceous, the former slender; head small but evi- 

 dently more than half as wide as the prothorax, the eyes rather 

 prominent, the foveae small, deep, perforato-punctiform; prothorax 

 two-fifths wider than long, the sides broadly, almost evenly arcuate 

 and converging almost from base to apex, the latter deeply sinuate, 

 with somewhat prominent and not very broadly rounded angles 

 and very much narrower than the base, which is transverse and 

 feebly margined, the angles nearly right but very broadly rounded; 

 surface steeply declivous at the sides anteriorly to the extremely 

 finely reflexed edge, the gutter rapidly expanding, turning inward and 

 becoming feeble behind about the middle, obsolete behind basal 

 third; foveae linear but broadly impressed, not very deep though 

 distinct, impunctate, the external convexity also impunctate; stria 

 very fine, not impressed; elytra not quite one-half longer than wide, 

 barely at all (cf) or very slightly (9) wider than the prothorax, 

 parallel, with feebly arcuate sides and obtuse apex, the sinus ob- 

 solete or vestigial; striae very fine and scarcely at all impressed in 

 both sexes, the scutellar well developed; intervals flat, the small 

 puncture near apical fourth; basal joint of the hind tarsi equal in 

 length to the fifth in both sexes. Length (cf 9 ) 8.2-8.7 mm.; 



