90 MEMOIRS ON THE COLEOPTERA 



fourths as broad as the prothorax and as wide as an elytron, the 

 sulci moderately narrow and deep; antennae slender, four-fifths as 

 long as the elytra, the medial joints more than twice as long as wide; 

 prothorax short, more than one-half wider than long, widest at two- 

 fifths from apex, the sides subevenly and distinctly rounded, ob- 

 lique and nearly straight in about basal half, the angles obtuse but 

 sharp; margins moderately reflexed; surface in part with feeble undu- 

 lations, the impressions very feeble; base slightly depressed, the 

 stria very fine, incomplete; fovese short, very deep and sublinear, 

 within broad shallow depressions, the carina strong and about a 

 third the total length; elytra not quite one-half longer than wide, 

 two-fifths wider than the prothorax, parallel, with feebly arcuate 

 sides, obtusely rounded in apical third; striae fine, entire, the punc- 

 tures very fine, more distinct basally; seventh stria similar to the 

 others; foveae small, before basal and at apical third. Length (cf 9 ) 

 3.8-4.1 mm.; width 1.45 mm. California (Mendocino Co.; also one 



example labeled "Clark's Station") idoneum n. sp. 



A Nearly similar but smaller and much narrower, the upper surface 

 bright viridi-aeneous; prothorax more than one-half wider than 

 long, the sides almost evenly rounded from apex to base, not 

 sinuate though straight very near the basal angles; impressions 

 almost obsolete, the stria deeper, the carina distinct in basal 

 fourth; elytra fully one-half longer than wide, only a third wider 

 than the prothorax, more gradually ogival behind, the sculpture 

 nearly similar. Length (c?) 3.6 mm.; width 1.25 mm. Cali- 

 fornia (Lake Co.), Fuchs obsequens n. subsp. 



Body oblong, very moderately convex, similar to idoneum but with the 

 elytra distinctly more elongate; head similarly well developed; an- 

 tennae slender, three-fourths as long as the elytra, the medial joints 

 more than twice as long as wide; prothorax as in idoneum but 

 smoother, more than one-half wider than long, the sides more prom- 

 inently rounded at three-fifths from base, thence oblique and nearly 

 straight anteriorly and posteriorly, becoming very feebly sinuate 

 toward base; foveae similarly small and deep but not subequal in 

 length to the carina as they are in idoneum, relatively much shorter, 

 the carina extending through basal two-fifths and strong; elytra 

 three-fifths longer than wide, rather wider behind the middle than 

 at base, a third wider than the prothorax, otherwise as in idoneum 

 but somewhat more gradually rounding behind. Length (9) 4.2 

 mm.; width 1.45 mm. California (Mokelumne Hill, Calaveras Co.), 



Blaisdell efficiens n. sp. 



Body similarly oblong but with less abbreviated prothorax and shorter, 

 thicker antennae, rather shining and cupreous above, moderately 

 convex; head larger than in idoneum and with relatively less prom- 

 inent eyes, similarly narrower than the prothorax but rather wider 

 than an elytron; antennae nearly three-fourths as long as the elytra, 

 the medial joints more obconic and about twice as long as wide; 

 prothorax as in idoneum, but broader and only one-half wider than 

 long, the sides more broadly and less strongly rounded, becoming 

 feebly sinuate before the angles, which are nearly right and very 



