28 
CATALOGUE OF 
XX Fore femora unarmed. - 
J+ Three exterior veins of the membrane joined by 
the transverse veinlet. - 
Androgeus. 
Lethozus. 
The following Synopsis is an abbreviated translation of Fieber’s 
arrangement of the European species of the family. 
A. Antennae 3-jointed. - 
B. Antenna* 4-jointed. 
a. Fore auxiliary segments in the middle of the 
discal segments. - 
b. All tbe auxiliary segments inserted by the hind 
borders of the diseal segments. 
* Hooks of the areolets distiuct. 
j- Hooks on the lower veins. Veins of the mem- 
brane springing from its base, the two inner 
veins from one areolet, or all the veins free. 
X First joint of the hind tarsi much longer than the 
second and third joints together, rarely 
equalling them in length. 
§ Prothorax in front with two transverse oo-forraing 
furrows. Membrane with one areolet at the 
base of the two inuer veins (Lygaeidea). 
X Eyes truncated behind. - 
X X Eyes not truncated behind. 
o llostrum longer than the head beneath. - 
oo Rostrum as long as the head beneath. 
-+■ Fore femora with a little subapical spine. 
-h-«- Fore femora unarmed. 
«--► Head transverse. First joint of the hind tarsi 
as long as the second and third joints together. 
+♦++ Head as long as broad. First joint of the hind 
tarsi longer than the second and third joints 
together. 
«?■> Scutellum in the middle with lateral furrows. 
Scutellum without furrows. - 
§§ Prothorax in front without transverse furrows. 
Membrane with four or five longitudinal straight 
or curved veins. 
X Prothorax contracted behind the middle; sides 
tumid. (Plociomera). 
o Prothorax much longer than its hind border. 
oo Prothorax as long as the breadth of its hind border. 
X X Prothorax not contracted, or with the hind part 
contracted beneath. 
o Sides of the prothorax obtuse or concise. 
-+■ Sides of the prothorax without keels. 
++ Prothorax elongated. 
Rostrum extending to the propectus. 
Rostrum extending to the middle of the meso- 
pectus. ..... 
Prothorax trapeziform, short. 
Tbitomacera. 
IsCHNODKMUS. 
Tetralaccus. 
LyGjEUS. 
CjENOCORIS. 
Arocatus. 
Lygjzosoma. 
Nysius. 
Paromius. 
Plociomerus. 
Prodkrus. 
*t~t* 
Icus. 
