28 



CATALOGUE OF 



XX Fore femora unarmed. - . - - Androgeus. 



II Three exterior veins of the membrane joined by 



ihe transverse veinlet. - - _ Lethceus. 



The following Synopsis is an abbreviated translation of Fieber's 

 arrangement of the European species of the family. 



A. Anteunce 3-jointcd. .... Thitomacera. 



B. Antenna; 4-joiuled. 



a. Fore auxiliary segments in the middle of the 



discal segments. - - . . Ischnodemus. 



b. All the auxiliary segments inserted by the hind 



borders of the discal segments. 

 * Hooks of the areolets distinct, 

 f 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. 

 J First joint of the hind tarsi much longer than the 

 second and third joints together, rarely 

 equalling them in length. 

 § Prothiirax in front with two transverse c/;-forming 

 furrows. Membrane with one areolet at the 

 base of the two inner veins (Ljgaeidea). 

 X Eyes truncated behind. ... Tetealaccus. 



X X Eyes not truncated behind. 



o Rostrum longer than the head beneath.- - LvGiEUS. 



00 Rostrum as long as the bead beneath. 



-i- Fore femora with a little subapical spine. - C.enocoris, 



-i--i- Fore femora unarmed. 



-I-+ Head transverse. P'irst joint of the hind tarsi 



as long as the second and third joints together. Aeocatus. 



++++ Head as long as broaii. First joint of the hind 

 tarsi longer than the second and third joints 

 together. 

 u^ Sculellum in the middle with lateral furrows. - Lyg^eosoma. 



t^t.cn Sculellum without furrows. ... Nysius. 



§§ Prolhorax in front without transverse furrows. 

 Membrane with four or five longitudinal straight 

 or curved veins. 

 X Protliorax contracted behind the middle; sides 



tumid. (Plociomera). 

 o Prothorax much longer than its hind border. . Paeomius. 



oo Prothorax as long as the breadth of its hind border. Plociomehus. 

 X X Prothorax not contracted, or with the hind part 

 contracted beneath, 

 o vSifies of the prothorax obtuse or concise. 

 -+ Sides of the prothorax without keels. 

 ++ Prolhorax clongatfti. 



K?! Rostrum extending lo the propcetns. - - Phodkhus. 



•^"^ Rostrum extending lo the middle of the meso- 



pectus. - - _ - . loos. 



+++-^ Prothorax trapezifortn, short. 



