294 
I. Basal two joiiit.s ot 
hind tarsi equal, 
or vSiibequal, in 
length. 
J. Pilosity of prono- 
tiim neaily white 
JJ. Fih)sity of pro- 
iiotum dark 
brown or black- 
ish. 
K. Front tibise 
c o nspicuouslj' 
bidentate ex- 
ternally 
KK. Front tibiae 
with upper 
tooth all but 
non-existent ... 
II. Basal joint of hind 
tarsi \-ei'y much 
longer than 2nd 
joint 
HH. Pronotum glabrous 
on disc, but with a 
fringe of long hairs 
across front ... 
FF. Doi-sal surface uniformly 
dark 
EE. Basal joint of hind tarsi 
notably shorter than 2nd 
joint 
CC. Pronotum glabrous, or at most 
fringed with hairs on lateral 
pai'ts of front margin. 
D. Basal joint of hind tarsi fully 
as long as joints 2 and 3 to- 
gether 
DD. Basal joint of hind tarsi 
much shorter. 
E. Clypeus very distinctly tri- 
dentate in front 
EE. Clypeus not tridentate in 
front. 
F. No part of dorsal surface 
(unless head) black. 
G. Basal joint of hind tar^i 
not longer tlian 2nd 
joint. 
H. Front tibiae conspicu- 
ously bidentate ex- 
ternally 
HH. Front tibise with no 
distinct tooth above 
the apical projection. 
T. Flabellnm of an- 
tenuje piceous : 
head con fluently 
transver'^ely rugu- 
los© ... 
di>;cuidalis, Mad. 
occidentalis, Mad. 
luridipennis. Mad. 
sericeipennis, Mad. 
cinctipenniis, Blackh. 
nudipennis, Germ. 
Palmerstoni. BlacTch. 
caviceps, Blackh. 
minor, Blackh. 
pal lid us. Mad. 
hvvv\]'io<. Blackh. 
