300 



REVISION OF THE TENEBRIONIDiE OF AMERICA, 



Tarsi spinous or setose beneath. 



Elytra widely embracing abdomen. 



Elytra narrowly embracing abdomen. 

 Tarsi with coarse, almost spinous hairs. 

 Tarsi finely pubescent beneath. 



BLAPTINI. 

 SCAURINI. 

 AMPHIDORINI. 

 TENEBRIONINI. 



Front broadly dilated at the sides, emarginatc ante- 

 riorly. 

 Anterior tarsi of I dilated. pedinini. 



Anterior tarsi of % not dilated. OPATRINI. 



Hind coxae oblique ; tarsi spinous. CRYPTICINI. 



Anterior coxae sub-transverse; middle coxrc without tro- 

 chantin ; third joint of antennae always short, outer 

 joints more or less perfoliate 

 Tarsi pubescent. Last joint always long. ulomint. 



Penultimate joint of tarsi bilobed. EETEROTARSINI. 



Tibiae all more or less dilated and fossorial. traciiysceltni. 



Eyes more prominent than the sides of the front, usually rounded, 



feebly or not at all emarginatc. DIAPERINT. 



First joint of tarsi very small, outer joints gradually thicker, longer 



and compressed. Gense transversely sulcate. boletopiiagint. 



Front either with a broad coriaceous band or articulating directly with 

 a coriaceous clypcns. Elytra never widely embracing abdo- 

 men. Third joint of antenna; long. 

 Sides of front not obliquely elevated. 



Abdomen pedunculate ; antennae slender. apocrypiiinj. 



Abdomen not pedunculate; antenna? with the outer joints 



usually compressed. HELOPINI. 



Sides of front obliquely elevated. 



Metastcrnum very short; body apterous. meracanthjnt. 



Metasternnm long; body slender and winged. STRONGYLUNi. 



t 1 1 1 he xvn — is laptj n i . 



This tribe contains not only a larger number of species, but also species of a, greater 

 size than any others of our fauna. Genera from every part of the globe are found here, 

 and the species in each portion are usually among the largest of the Tenebrioniclac found 

 there. All are black or dark brownish, and variously though never very roughly sculp- 

 tured, and a few species are pubescent or pilose. All are apterous. Our species are 



