HEM I PIER A HETEROPTERA. 
151 . 
Fore lobe with a small tubercle on each side. - simulans. 
§§ Fore femora benealli with distinct and sometimes 
rather long spines; fore tibiae beneath very 
minutely denticulated. 
X Fore lobe of the prothorax with a little spine or acute 
tubercle on each side; spines of the prothorax 
and of the scuiellum rather long. Spongy furrow 
of the fore tibiae bardly one-third ol their length, 
that of the middle tibiae much shorter. eburneus, Serv., nigro- 
spinosus, obscuricornis, rufescens, tricolor. 
X X Fore lobe of the prothorax with no spine or tubercle 
on each side. 
o Spines of the prothorax short. Spine of the scutellum 
moderately long, slightly inclined backward. 
Spongy furrow at the fore tibiae hardly one-third 
of their length. - 
oo Spines of the protborax long. 
-t- Spongy furrow of the fore tibiae more than one-third 
of their length. - - - - 
-+-t - Spongy furrow of the fore tibiae about one-sixth or 
hardly more than one-eighth of their length. 
flavofasciatus. 
pyrrhomelas. 
mundus, 
Amazonus. 
** Fore lobe of the protborax with four small tubercles, 
those on each side sometimes almost obsolete. 
Side angles of the hind lobe rectangular or 
slightly acute, with no spine or tooth. Spine 
of the scutellum short, almost erect, or slightly 
inclined backward. Fore femora beneath very 
minutely spinulose. Spongy furrow of the fore 
tibiae rather long. 
| Scutellum black. - stillatipennis, affinis. 
f f Scutellum reddish. - scuteilaris, tristillatus. 
b. Fore lobe of the protborax with four small tubercles, 
the side pair very minute ; side angles of the hind 
lobe unarmed, rounded. Scutellum attenuated 
into a slightly hindward-reflexed spine. Fore 
femora spinulose beneath. - bicolor. 
JB. Ridge elevated into two compressed slightly acute 
tubercles. Spongy furrow of the fore tibia; small. 
Legs rather short. Third joint of the hind tarsi 
almost longer than the first and second joints 
together. 
a. Head elongated. Ante-ocular part of the head and 
first joint of the rostrum almost equally long: 
Fore lobe of the protborax acutely quadrituber- 
culate; side angles of the hind lobe acute, some- 
what prominent. Apical spine of the scutellum 
extended backward, hardly reflexed. Fore femora 
distinctly thickened. Spongy furrow of the fore 
ti Lise oval, small. .... rubropictus. 
b. Head oval, rather short. First joint of the rostrum 
a little longer than the ante-ocular part ol the 
