130 MEMOIRS ON THE COLEOPTERA 



obsolete medially; foveae moderate, sublinear, the carina fine, closely 

 paralleling the lateral edge, not distinct under slight amplification; 

 elytra scarcely one-half longer than wide, about one-half wider than 

 the prothorax, parallel, with arcuate sides and abruptly rounded 

 humeri; striae moderately coarse, distinctly impressed, the punctures 

 moderate, deep; foveae near basal and apical third. Length (c/ 1 9 ) 

 2.52.6 mm.; width 0.85 mm. California (Yuma Reservation). 

 Two examples frugale n. sp. 



Antennae fuscous, clearer testaceous basally; elytra with the darker areas 

 well defined 74 



74 Form oblong-suboval, rather strongly convex, polished throughout, 

 black, with feeble piceous tinge, the elytra flavate, with a post-scu- 

 tellar spot and a large common dark area in more than apical half 

 and limited by the apical pale area, which is subquadrate, with each 

 side deeply sinuate, the anterior line of this dark area continued 

 almost to each side margin by a less dark fascia ; anterior fovea within 

 a dark spot; legs and epipleura pale; head about as wide as the pro- 

 thorax, with very prominent eyes, the sulci straight, feebly con- 

 verging; antennae moderate, the medial joints slightly less than twice 

 as long as wide; prothorax well developed, two-fifths wider than long, 

 the subtruncate base slightly more than two-thirds the maximum 

 width, the sides strongly rounded to the parallel basal part; sub- 

 basal impression rather fine and near the basal margin, interrupted 

 at the middle, the foveae deep, sublinearly oval, close to the very 

 indistinct carina; elytra one-half longer than wide, less than one- 

 half wider than the prothorax, the parallel sides arcuate, rapidly 

 rounded at the humeri; striae moderate, somewhat impressed, the 

 punctures deep, conspicuous and usually close-set; foveae near basal 

 and apical third. Length (cf 9 ) 2.4-2.65 mm.; width o.75-o"-9 mm. 

 Texas (Brownsville, Dallas and Galveston), Nebraska (Malcolm), 

 Missouri (St. Louis), and Iowa (Keokuk). Abundant, .imbelle n. sp. 



Form moderately stout and convex, oblong, highly polished, black, with 

 very feeble aeneous lustre anteriorly, the flavate elytra maculate 

 somewhat as in the preceding, except that the median fascia is pro- 

 longed anteriorly, along the median line of each elytron, almost to 

 the small spot inclosing the anterior fovea; there is also a pronounced 

 scutellar triangular dark area; head with prominent eyes, rather 

 obviously narrower than the prothorax, the frontal part of the sulci 

 subparallel; antennae with the medial joints one-half longer than 

 wide: prothorax well developed, short, one-half wider than long; 

 base nearly three-fourths the maximum width; sides rather strongly 

 rounded, oblique and evidently broadly sinuate basally, becoming 

 nearly parallel, the angles about right; subbasal impression distinct 

 and rugose except medially, the foveae rather broadly impressed, the 

 inner part sublinear, the carina short and indistinct; elytra rather 

 short, scarcely one-half longer than wide, the parallel and feebly 

 arcuate sides not very strongly rounded at the humeri; striae rela- 

 tively coarse, impressed, with strong and conspicuous punctures, 

 the foveae before basal and at apical third. Length (G?) 2.4 mm.; 

 width 0.82 mm. Arizona (the locality not recorded). .gratuitum n. sp. 



