268 MEMOIRS ON THE COLEOPTERA 



than three-fifths as wide as the prothorax, with prominent eyes and 

 deep arcuate subparallel strioles; antennae obscure ferruginous, 

 brighter rufous basally, extending well behind the thoracic base; 

 prothorax only slightly more than one-half wider than long, the 

 sides evenly arcuate, finely but sharply and strongly reflexed; apex 

 fully four-fifths as wide as the base, rather distinctly sinuate, with 

 broadly rounded angles, the basal evidently obtuse but not rounded; 

 impressions obsolete, the stria fine, long; foveal region with fine 

 sparsely scattered punctures; inner fovea fine, long, deep and linear, 

 the outer small, rounded, impressed and not basal; elytra a third 

 longer than wide, submedially a fifth wider than the prothorax; 

 base slightly wider than the thoracic^base; striae very fine but sharply 

 defined, impunctate, the scutellar rather long, oblique, not free; 

 intervals wide and perfectly flat. Male prosternum with a small 

 rounded unimpressed area of fine punctures; abdominal apex in 

 that sex with a close-set pair of punctures at each side. Length (cf ) 



6.4 mm.; width 3.05 mm. Nevada (Reno) lugubris n. sp. 



Elytra oblong, parallel, feebly arcuate at the sides 19 



19 Head large, shorter than wide, with very prominent but moderate 

 eyes; body more parallel, the elytral base never more than barely 



perceptibly wider than the thoracic base 20 



Head moderate, as long as wide or nearly; prothorax shorter 21 



20 Body elongate, parallel, moderately convex, shining throughout in 

 the male; under surface piceous-black, the legs obscure rufous; head 

 nearly two-thirds as wide as the thoracic base, the strioles somewhat 

 unevenly impressed; antennae long, obscure ferruginous, extending 

 fully to the thoracic base in the male; prothorax one-half wider than 

 long, widest at the middle, the sides rounded anteriorly, becoming 

 straight and oblique in basal half; apex broad, more than four-fifths 

 as wide as the base, broadly but evidently sinuate, with rather nar- 

 rowly blunt angles; transverse impressions obsolete; foveal region 

 with many rather close-set, moderately strong punctures; inner fovea 

 fine, linear, the outer more oval, deep, oblique and with its outer 

 boundary rather elevated; elytra one-half longer than wide, slightly 

 though rather evidently wider than the prothorax, rounded in api- 

 cal third, the sides feebly arcuate; striae fine but deep and sharp, 

 very slightly impressed in the male, the scutellar long, free at tip; 

 intervals not quite flat; prosternum (cf) with a rather large oval 

 central area, which is minutely punctate and not even flattened, 

 the abdominal apex with a moderately close-set pair of punctures 

 at each side. Length (cf ) 8.0 mm.; width 3.4 mm. New Mexico 



(Fort Wingate), Shufeldt nupera Horn 



Body somewhat similar in general form but slightly less elongate, black 

 or paler; under surface and legs rufous, with the upper surface 

 polished throughout in the male, the elytra densely alutaceous in 

 the female; head nearly similar, the antennae much shorter in both 

 sexes, far from attaining the thoracic base; prothorax slightly more 

 transverse, two-thirds wider than long, more evenly rounded at the 

 sides, otherwise nearly as in nupera, except that there are generally 

 fewer and finer punctures in the foveal area, the foveae nearly simi- 



