293 
BB. Front tibise not tridentate ex- 
ternally. 
C. Pronotum pilase, at loafit with a 
fringe of hairs across its front 
margin. 
D Elytra pih^so. 
E. Elytra very h)ng. quite or 
a.lmoist covering propygi- 
dium in both sexes ... 
EE. Elytra noiinal (or very 
short) . 
F. Elytra nnicoloroiis. 
G. Front tibiae very strong- 
ly bidentate externally 
GG, Front tibise not, or 
scarcely, bidentate ex- 
ternally. 
H. Elytra bearing very 
long and very coarse 
sparse white bristles 
HH. Elytra clothed with 
fine soft hairs 
FF. Elytra bicolorous. 
G. Front tibia;^ not toothed 
externally above the 
apical projection. 
H. Basal joint of hind 
tarsi fully half again 
as long as 2nd joint 
HH. Basal joint of hind 
tarsi notably shorter 
in proportion to 2nd 
joint ... ... 
GG. Front tibise distinctly 
bidentate externally. 
H. Basal joint of hind 
tarsi at least half 
again as long as 
2nd joint 
I. Pilosity of dorsal 
surface dark 
II. Pilosity of dorsal 
surface almost 
white 
HH. Basal joint of hind 
tarsi very little lon- 
ger than 2nd joint 
DD. Elytra glabrous, or with 
only a few hairs close to base. 
E. Basal joint of liind tarsi 
not shorter than 2nd joint. 
F. Dorsal surface not uni- 
formly dai'k. 
G. Elytra pilose in front 
part 
GG. Elytra glabrous. 
H. Disc of pronotum 
clothed with erect 
hairs. 
alienus, Blackh. 
suavis, Blackh. 
diversus, Blackh. 
rotundicollis, Blackh. 
ventralis, Blackh. 
assimilis, Mad. 
discipennis. Giier. 
albohirtus. Mast. 
canescens. Mad. 
gravidus. Blackh. 
