io6 MEMOIRS ON THE COLEOPTERA 



sulci narrow, rather deep and sinuous; antennae slender, fuscous, 

 pale basally, the medial joints nearly three times as long as wide; 

 prothorax large, nearly one-half wider than long, wider at base than 

 at apex, the subevenly and moderately rounded sides rather broadly 

 reflexed basally, finely so apically, slightly oblique posteriorly, be- 

 coming feebly sinuate at the right and sharp angles; anterior im- 

 pression obsolete, the posterior feeble, the stria very fine; foveae 

 deep, linear, nearly as long as the distinct carina; elytra fully one- 

 half longer than wide, barely a third wider than the prothorax, 

 parallel, gradually circularly rounded behind; striae fine, scarcely 

 impressed, the punctures not coarse but distinct, rather close-set, 

 evident nearly to the declivity, those of the seventh series obsolete 

 at about the middle; foveae near two and four sevenths. Length 

 (a 71 9 ) 3-3-3-7 mm.; width 1.25-1.4 mm. Illinois (Highland Park). 



mon stratum n. sp. 



Body not subparallel, the prothorax more evidently narrower than the 

 elytra 35 



35 Antennae long and very slender, the medial joints scarcely less 

 than four times as long as wide. Body slightly stout, rather convex, 

 black, with somewhat greenish alutaceous lustre anteriorly, the 

 elytra blacker, with feebly defined, moderately pale markings, a 

 long streak on the eighth interval, shorter spots on intervals four 

 to seven, near basal third, sometimes obsolete, and a short external 

 subapical fascia, the apex more indefinitely pale, the basal pale spot 

 reduced to a very small area on the basal slope; under surface black, 

 the legs rufous; head large, fully four-fifths as wide as the prothorax, 

 the sulci deep; antennae fuscous, in greater part rufous basally, as 

 long as the elytra; prothorax one-half wider than long, the sides 

 subprominently rounded just before the middle, straighter apically, 

 similarly oblique basally, becoming broadly and only just visibly 

 sinuate toward the very sharp and right angles; impressions very 

 feeble, slightly rugulose, the stria extremely fine; foveae large, rugu- 

 lose, with a short deep linear bottom, the carina strong, a fourth the 

 total length; elytra parallel, gradually ogival behind, two-fifths 

 wider than the prothorax, the striae rather coarse, not much im- 

 pressed, the punctures strong and close basally, traceable to the 

 declivity, the foveae before basal and at apical third. Length (cf 9 ) 

 3.6-4.0 mm.; width 1.25-1.45 mm. Indiana fenisex n. sp. 



Antennae not quite so long, the medial joints never more than three times 

 as long as wide 36 



36 Form moderately stout, slightly convex, colored nearly as in the 

 preceding, the anterior parts less greenish and blacker; elytra gen- 

 erally with a small lateral fascia near basal third, and with a very 

 small and more anterior spot on the third interval, the subapical 

 fascia from the sides attenuated to about the second interval, usu- 

 ally much more conspicuous than the anterior, the apex also pale; 

 head with rather deep straight sulci, the antennae slender, colored 

 as in fenisex, but much shorter than the elytra, the medial joints 

 between two and three times as long as wide; prothorax one-half 

 wider than long, the sides strongly, subevenly rounded, becoming 



