BUFFALO SOCIETY OF NATURAL SCIENCES 33 



below the results of my studies on the material now in my col- 

 lection. Further explorations will doubtless bring to light 

 many new species from the south and west. The following 

 key it is hoped will assist in locating the species here enu- 

 merated. 



Brown species transversely banded with pale, i. 



Green, flavous or piceous species, not transversely banded, 2. 



1. Elytra infuscated; suprahumerals horizontal, broad, tri- 



angular; sides of the pronotum with a broad pale spot 

 generally forming a transverse band, and a narrower one 

 near the apex, 1, dicer os Say. 



-. Elytra scarcely infuscated, suprahumerals almost terete, 

 acute, strongly recurved ; apex of the pronotum with the 

 apical band only, but sometimes with an oblique line 

 near the middle; a smaller species with a pale metopi- 

 dium, 2, albescens n. sp. 



2. Suprahumerals distinctly produced in horns, at times but 



short and triangular, 3. 



Suprahumerals reduced to a mere angle or short tubercle, 



10. 



3. Clypeus short, at apex continuing the contour of the outer 



margin of the cheeks, 4. 



-. Clypeus produced, forming an angle in the apical contour 



of the head, 5. 



4. Larger, 8-10 mm., Suprahumerals prominent, acute, pro- 



duced horizontally, little if at all curved posteriorly; 

 metopidium transversely flat, 3, bnbalns Fabr. 



-. Smaller, 7-8 mm. ; Suprahumerals short and broad, hori- 

 zontal, strongly curved backward; metopidium trans- 

 versely convex, 4, brevitylus n. sp. 



5. Clypeus broad, almost truncated at apex and, with the 



lorae, abruptly produced beyond the line of the cheeks; 

 pronotum little elevated, surface hairy; suprahumerals 

 short, triangular, horizontal, scarcely if at all curved 

 backward; metopidium transversely flat, females gen- 

 erally marked with black on the femora and pectus, 

 males sometimes almost entirely black, 



10, basalts Walk. 



