ROLAND HAYWARD. 53 



This group differs from all the others in which the dorsal punc- 

 tures are situated on the third stria by the subangulate humeri of 

 the elytra, and from all but the next in having, the eighth stria dis- 

 tinct from the margin. The species are above the average size and 

 some of them resemble each other very closely. In the first two the 

 head and thorax are alutaceous, the latter usually very finely or not 

 at all so on the disc, and in the first the elytra are usually coarsely 

 alutaceous at the sides, being very finely so in the second. In the 

 next three the surface is sometimes very finely, sometimes not at all 

 alutaceous, this character being so variable as to be of no service in 

 their separation. 



The following species occur in our fauna : 



Elytra with the dorsal punctures large, round, foveiforra. 



Thorax very distinctly narrower at base than apex, sides strongly arcuate, 

 sinuate in front of the hind angles, which are obtuse; elytra finely 

 striate, the outer intervals usually coarsely alutaceous and subopaqne. 

 Length .27-. 30 inch bifossulatuili Lee. 



Thorax slightly narrower at base than apex, sides moderately arcuate in front, 

 slightly sinuate behind, hind angles subrectangular ; elytra finely striate, 

 very finely alutaceous, shining. Length .20-.24 inch. 



ainericaniim Dej. 

 Elytra with the dorsal punctures normal. 



Form broad, dilated, depressed ; thorax narrower at base than apex, sides 

 strongly arcuate in front, sinuate behind, hind angles obtuse; elytra 

 moderately deeply striate, much more finely at tip; legs dark rufous. 

 Length .26-.29 inch flilatatuin Lee. 



More elongate, feebly convex ; thorax scarcely narrower at base than apex ; 

 apex emarginate. sides slightly arcuate in front, feebly sinuate behind, 

 hind angles subrectangular ; elytra more deeply striate ; legs piceous, the 

 femora at base and the tibise often rufous. Length .23 -.27 inch. 



honestuin Say. 



More convex ; thorax more narrowed behind, apex truncate, sides strongly ar- 

 cuate in front, sinuate behind, hind angles subrectangular; elytra more 

 deeply striate, the strise more deeply, almost crenulately punctate. 

 Length .22-.25 inch chalceiini Dej. 



Elongate, depressed ; thorax slightly narrower at base than apex, sides arcuate 

 in front, sinuate behind, hind angles acute, slightly prominent; elytra 

 moderately finely striate, with an ill-defined discal spot about one-third 

 from apex testaceous; legs rufous. Length .20-.23 inch. 



blaucliardi n. sp. 



1.5. B. bifossulatiiin Lee. — Form moderately broad, depressed: color 

 seneous or coppery bronze, rarely black, the head, thorax and sides of the elytra 

 usually more or less coarsely alutaceous and subopaque. Head large, as wide as 

 or slightly wider than the thorax at apex : palpi piceous or nearly black ; antennse 

 nearly one-half as long as the body, nearly black, the basal joints somewhat 



TRANS. AM. ENT. SOC. XXIV. FEBRUARY, 1897. 



