312 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



5. Thorax transversely suboblong-oval ; somewhat coarsely and discretely 



punctate 6 



Thorax subcordate and coarsely, rugoso-punctate 15 



6. Propleume not hairy 7 



ProplenrfG hairy 14 



7. Genae not produced — , S 



Gente produced ; sculpturing more or less coarse blanchardii. 



8. First three abdominal segments densely, coarsely punctate and more or less 



rugose : 9 



First three abdominal segments more finely and sparsely punctate, the first 

 somewhat rugulose 10 



9. Pronotum and elytra moderately convex, surface dull ; elytra [consobrina. 



more or less tuberculate laterally, asperate [scahripcnnis. 



Pronotum and elytra very strongly convex; surface shining; elytra subas- 

 perately sculptured ncoiomcr. 



10. Humeri more or less obtusely rounded, frequently prominent anteriorly 11 



Humeri obsolete; elytra equal to the prothoracic base, very gradually widen- 

 ing to middle, causing the thorax to appear somewhat remote; surface 

 smooth, shining or dull ; antennae long hornii. 



11. Humeri obtusely rounded and not prominent to prominent anteriorly ; thorax 



noticeably transverse 12 



Humeri obtusely to broadly and evenly rounded, not at all prominent an- 

 teriorly; thorax not noticeably transverse, more as in coiifiobriiia, fre- 

 quently subcordate (female) ; surface dull fncJisU. 



12. Surface muricato-granulate laterally and on apex ; epipleural margin at 



humeri more or less visible from above 13 



Surface finely and densely muricato-granulate; thorax somewhat finely 

 punctate; form oblong-oval and depressed; antennae short; humeri 

 rounded hoppingii. 



13. Surface shining ; elytra short oval, convex, rather rapidly declivous behind ; 



humeri obtusely rounded, not at all prominent; pronotum rather coarsely 



punctate parricollis. 



Surface more or less dull. 



Elytral base not bi-oad; humeri rounded, feebly obtuse and not conspic- 

 uous; elytra somewhat attenuate at apex, sides evenly rounded, disc 

 gradually declivous behind (male). 'Elytral base broad, humeri 

 rather broadly rounded and somewhat obtuse, conspicuous and not 

 prominent anteriorly; apex less attenuate; disc more rapidly decli- 

 vous behind (female) var. phtnata. 



Elytral base broad; humeri conspicuous and more or less prominent 

 anteriorly and margined by the ei)ipleur:Tp; elytra oblong, disc flat- 

 tened, narrowing behind the middle, sides parallel ; ju-othorax strongly 



transverse -.-- var. produvta. 



Elytral base broad; lyimeri as in producta; elytra oblong, disc flattened 

 usually, coarsely and densely rugoso-punctate centrally, muricato- 

 tuberculate laterally and on ai)ex ; thorax more sparsely and coarsely 

 pimctate; female often with the form of cordafa var. constricta. 



14. Pronotum not )ioticeal)ly transverse: disc with rather long erect hairs lat- 



erally in the granulate area ; inoiMeural hairs rather long rUiviconiii^. 



Pronotum distinctly transverse; disc with very short, erect sette laterally; 

 propleural hairs shorter than in clavicornis scubrosa. 



15. Thorax strongly constricted at base ■■ 16 



Thorax less strongly and more briefly constricted; sides broadly, strongly, 



and evenly rounded as in scabrosa var. rotiindipcnnis. 



