Coleopterological Notices, VII. 309 



Elytral striae deeply impressed ; disk of the pronotum noticeably convex. 



19 catenulatus 



Sides of the prothorax oblique and very broadly, feebly sinuate posteriorly, 

 the basal angles much more than right, the disk wider than long, the 

 base narrow, not as wide as the head ; elytral punctures coarser than the 



striae 20 oreophilus 



12 — Sides of the prothorax oblique toward base and not or only feebly sinuate, 

 the angles distinctly more than right. 

 Prothorax wider than long, at base rather wider than the head ; elytra short, 



strongly dilated and only a little longer than wide 21 oMiquiis 



Prothorax apparently as long as wide, at base evidently narrower than the 

 head. 

 Posterior apex of the intercoxal plate of the mesosternum narrowly and 

 deeply emarginate as a rule, though somewhat variable ; elytra nar- 

 rowly oval 22 convergens 



Posterior apex broadly emarginate ; elytra more broadly oval and fuller 

 at the humeri ; prothorax relatively distinctly larger. 

 Gense usually minutely and acutely incised ; pronotum very finely 

 and densely granulato-reticulate and velvety blue-black. 



23 opacicollis 



Gense more coarsely and obtusely emarginate as a rule ; pronotum 



less opaque, the sides more evidently sinuate toward base ; body less 



elongate 24 sciilptipennis 



Sides of the prothorax strongly sinuate near the base, the angles right ; gense 

 deeply and angularly incised ; mesosternal plate strongly and angularly 



emarginate behind ; head transversely rugulose 25 porcatllS 



13 — Prothorax strongly sinuate posteriorly, the sides parallel or nearly so and 

 straight for a short distance from the basal margin, the angles generally 

 right. 

 Base of the prothorax very narrow, not as wide as the head, the surface 

 shining. 

 Prothorax similar in general form in the two sexes ; elytra longer, elon- 

 gate-oval. 

 Elytral striae rather fine toward the suture ; prothorax in the male % 



as wide as the elytra 26 dissolutus 



Elytral striae coarse and deep throughout ; prothorax smaller, very 

 much less than }4 ^^ vride as the elytra in the male. 

 Larger species, the prothorax strongly narrowed behind from the 



middle 27 sinuatus 



Smaller, the elytra more narrowly oval ; j)rothorax more gradually 



narrowed behind from before the middle 28 politus 



Prothorax dissimilar in the sexes, greatly inflated anteriorly in the male, 

 small in the female ; elytral shorter and more broadly oval. 



29 corpulentiis 



Base of the prothorax broad, wider than the head, the surface dull and not 



bluish ; elytral striae very deep 30 compositus 



