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TRANS. ST. LOUIS ACAD. SCIENCE. 
Prothorax twice as wide as long, sides with three 
recurved spines, elytra with one discal line, an- 
tenne geniculate - - - - Ruexius Le Conte 
Body depressed, antennez thicker towards the apex. 
Tarsi with a single claw, antennal club 3-jointed. 
Vertex arcuately impressed, not produced in front. 
Body broader, iateral margin of the pronotum cre- 
nate, prosternum carinate, fourth dorsal segment 
not prolonged” - - - - - TueEsium Casey 
Body slender, pronotum with lateral longitudinal 
grooves, prosternum carinate, fourth dorsal not 
prolonged - - - - - Faxiscus Casey 
Body linear, lateral margin of the pronotum sim- 
ple, the fourth dorsal segment prolongate. 
EupLectus Leach 
Tarsi with two equal claws. Body linear, anten- 
nal joints gradually slightly larger towards the 
apex (Sagola Sharp, Sonoma Casey) - Faronus Aubé 

