298 MEMOIRS ON THE COLEOPTERA 



antennae as long as the thoracic width, black, the first three and one- 

 half joints bright testaceous; prothorax one-half to nearly three- 

 fifths wider than long, the sides broadly rounding before the middle; 

 sometimes subparallel basally; apex four-sevenths as wide as the 

 base, deeply sinuate, with prominent angles; foveae impunctate, in- 

 definite, a small discal lineiform incisure sometimes representing the 

 inner; basal angles right; elytra one-half longer than wide, barely at 

 all wider than the prothorax; striae fine, very feebly impressed, 

 coarser and deeper on the declivity, impunctate; punctures of the 

 lateral series very remote and irregularly spaced medially. Length 

 (cf 9 ) 8.7-9.5 mm.; width 3.8-3.9 mm. California (Los Angeles 

 and San Francisco) mystica n. sp. 



Form oblong-oval, rather convex, shining, the elytra sericeous in the 

 female; upper surface with bronzy-aeneous lustre; under surface 

 black, the legs rufo-piceous or blackish, the femora always black; 

 head and antennae nearly as in the preceding, the former slightly 

 smaller, much less than half as wide as the prothorax, the latter 

 similar in almost all respects, except that the apex is less deeply 

 sinuate; elytra almost similar but still a little more elongate, fully 

 one-half longer than wide, with the surface in the female more densely 

 subopaque and the elytral striae finer and feebler, similarly impunc- 

 tate, the intervals perfectly flat as a rule, and not very slightly 

 convex as they are in the preceding; striae similarly coarser, with 

 more convex intervals on the posterior declivity. Length (cf 9 ) 

 8.0-9.3 mm.; width 3.5-3.9 mm. Ontario to North Carolina, New 

 Hampshire, Iowa and Lake Superior to Colorado (Boulder Co.). 

 Abundant fallax Lee. 



Form rather more narrowly oblong-oval than in fallax and smaller in 

 size; color and lustre almost similar, the female elytra rather less 

 opaculate; head subsimilar, much less than half as wide as the pro- 

 thorax, the antennae rather longer; prothorax nearly similar but 

 rather less transverse and more deeply sinuate at apex, with more 

 prominent apical angles; elytra similar in general appearance and 

 relationship with the anterior parts, but evidently still more elon- 

 gate, often more than one-half longer than wide; striae not quite so 

 fine, the intervals very feebly convex. Length (cf 9 ) 7.7-8.7 mm.; 

 width 3.2-3.7 mm. California (Humboldt to Los Angeles), Nevada 

 (Reno), Idaho (Cceur d'Alene), Utah (Provo) and New Mexico 

 (Fort Wingate). Very abundant, representing fallax in the western 

 regions hesperia n. sp. 



8 Legs black; body narrow and elongate. Black with aeneo-cupreous 

 lustre above, the under surface black; tibiae and stout tarsal setae 

 fulvous; head fully half as wide as the prothorax, the eyes rather 

 large and prominent; antennae black, the three basal joints bright 

 testaceous, subequal in the sexes, rather stout, extending scarcely 

 beyond the thoracic base; prothorax nearly three-fifths wider than 

 long and only a little more than a third as lon^ as the elytra, the 

 sides broadly arcuate, converging in about apical, subparallel in 

 basal, half; apex two-thirds as wide as the base, rather deeply sin- 

 uate, with prominent, bluntly pointed angles; basal angles right, 



