Tue PseLapnip@ oF Nortu AMERICA. 225 
Vertex not foveate prothorax faintly trifoveate, under surface of 
head bicarinate body broad, antennal club three-jointed, only 
four ventral abdominal segments visible. - NISAXIS, Casey. 257 
Vertex and pronotum trifoveate, body broad, each elytron with a 
long discal line, antennz with a three-jointed club, under sur- 
face of head unicarinate. - - : BRYAXIS, Leach. A6 
Vertex bifoveate with a transverse frontal impression and ebee-obsolely 
sdutely circumambient sulcus, prothorax trifoveate, only the 
last antennal joint enlarged, body elongate. EupsEentius, Lec. ¢ 
52 Body convex abdominal border narrow, prothorax without, or with one 
basal fovea, base of the abdominal dorsum without carine, or only 
indications of them, mutually far distant. 
Pronotum not foveate, elytral lines wanting vertex impressed in 
front. - - - - - - 2) PW PSEBAPPUS, Zeca ee 
Pronotum unifoveate, elytral lines present, the discal ones very 
short, vertex and antenne differently sculptured in the sexes. 
VERTICINOTUS, Grendel. 2% 
Vertex with four faint foveze different in the sexes; prothorax 
bifoveate, with a shallow basal transverse sulcus; elytral 
discal lines obsolete or wanting, sutural lines present, abdom- 
inal border on each segment not triangular, basal carinze 
present. Sexual differences in the vertex, antennz and an- 
terior tibize, tarsi with two unequal claws. ARTHMIUus, Lec. 4 
483 Body circulo-cylindrical, narrow, elongate, very convex; abdominal mar- 
gin with the edges not parallel, triangular on each segment, the ex- 
ternal edges obsolete; vertex arcuately impressed. Prothorax with 
two or three longitudinal grooves, claws two, unequal. BAtTRisus, Lec. & 
a* Posterior cox approximate. 
da’ Body circulo-cylindrical, narrow, vertex arcuately impressed, prothorax 
without longitudinal sulcus, the last antennal joint only enlarged, 
tarsi with a single claw (Zvimiinz ). 
Elytral base bifoveate,-no subhumeral fovea, head larger. 
TrIMiIuM, Aubé. 32 
Elytral base trifoveate, with a subhumeral fovea, head smaller. 
AcTIuM, Casey. 39 
d* Body elliptico-cylindrical, convex, broader, the last three antennal joints 
enlarged, head transverse, prothorax with sharp, straight, linear longi- 
tudinal and basal sulci crossing each other, tarsi with two unequal 
claws (Zrogasterini.) 
e1 Prothorax at sides not spinous. Elytra with four basal punctures, each 
with a line, the discal ones abbreviated. - - RHEXIDIUS, Casey. 4] 
e® Prothorax at the sides spinous. 
Prothorax armed at the sides with a single sharp tooth, elytra 
with three discal lines. - - - - Oropus, Casey. 43 
