n8 MEMOIRS ON THE COLEOPTERA 



Wyoming to British Columbia, Oregon and Northern California. 

 Seven examples, all males. [H. occidentalis Chd.].. .fraternus Lee. 



6 Form oblong-elongate, subparallel, convex, shining and deep black 

 above and beneath (cf), or black, with the elytra and under surface 

 opaculate (9), the legs dusky rufous, with the femora black, the 

 anterior notably swollen, or, clear testaceous throughout, with the 

 anterior not more swollen, respectively; antennae rather thick, moder- 

 ate in length, they and the palpi testaceous; head three-fifths (cf) 

 to nearly two-thirds ( 9 ) as wide as the prothorax, the eyes rather 

 prominent, the fovese small, rounded, very deep and perforate; 

 prothorax one-half wider than long, the sides very broadly and feebly 

 rounded, nearly straight though barely at all converging behind the 

 middle, the base transverse, finely margined, with only slightly obtuse 

 but rather broadly rounded angles, slightly wider than the apex, 

 which is rather feebly sinuate and with broadly rounded angles; 

 surface steeply declivous to the very finely reflexed edge anteriorly, 

 the gutter becoming only a little wider posteriorly and disappearing 

 at basal third, finely punctulate; fovese short, linear but very broadly 

 and moderately impressed, rather coarsely and closely punctate, 

 the area thence to the sides broadly convex and with a few very sparse 

 minute punctules; stria very fine; elytra about one-half longer than 

 wide, only just visibly wider than the prothorax, obtusely rounded 

 behind, parallel, with very feebly arcuate sides, the sinus very 

 feeble though evident; striae fine, the scutellar long, the intervals 

 nearly to quite flat; puncture near apical fourth; basal joint of the 

 hind tarsi equal in length to the fifth, the first three decreasing uni- 

 formly. Length (cf 9 ) 10.7-10.9 mm.; width 3.7-4.2 mm. Utah 

 (Provo), Wickham. Peculiar because of sexual differences in the 

 legs , uteanus n. sp. 



7 Head moderate in size, approximating three-fifths the width of the 

 prothorax 8 



Head notably small in size in both sexes, not or barely more than half as 

 wide as the prothorax 24 



8 Sides of the prothorax behind about the middle always evidently 

 though very moderately converging to the base, as usual in the 

 genus 9 



Sides of the prothorax nearly straight and perfectly parallel from the 

 base to beyond the middle, where they become rather strongly 

 arcuate at the apical angles 23 



9 Hind tarsi with the basal joint not or but very little shorter than the 

 fifth in both sexes; sides of the thoracic base rather abruptly, pos- 

 teriorly oblique; antennae slender 10 



Hind tarsi with the basal joint much shorter than the fifth n 



10 Body rufo-castaneous in color, always pale red-brown beneath, 

 polished, the elytra (9) slightly alutaceous; head smooth, with 

 prominent eyes, the foveae small, perforato-punctiform; mentum 

 tooth strong and very acute; prothorax one-half wider than long, 

 the sides strongly and subevenly rounded from base to apex, the 

 latter broadly, deeply sinuate, with rather prominent and narrowly 

 rounded angles and only slightly narrower than the base, which is 



