HEMIPTERA HKTKROPTERA. ITiO 



CiECIGEN^. 



Asteinniites, De Lap. — Lyp;a'oilcs, Ihmn. — Caecipfenx, Srrv. [list. Hem. 

 xxxviii. 265 — Cneciscuia, DoikjI. and &()//— Pynlidcoiid;!, S/al, Ilein. 

 Afr. iii. 1 — Pyirhocorina, Slal, K. V. Ak. Ilandb. 1870, 90. 



A. Protliorax with concise and elevated sides. - I. Pyrrhdcokid^. 



B. Sides of the piotborax nut elevated. - - 2. Largid.i^. 



The Pyrrhocoridae and the Largidoe may be considered as one family, 

 which is divided by Prof. Stal into two subfamilies as follows: — 



A. Sixth ventral segment of the female fissured to the base. L.vrgida. 



B. Sixth ventral segment entire in both sexes. - Pvrrhocorida. 



Serville arranges thus the genera of the two families: — 



PYRRHOCORID^. 



Pyrrhocoridoe, Fieb. Eur. Hem. 25. 



A. Eyes not petiolated. 



a. Body much elongated. First joint of the antenns 



half the length of the body ; fourth much shorter 



than the third. - - - _ MACROCiiiiRAiA. 



b. Fourth joint of the antenna as long as the third or 



longer. 

 * Fourth joint of the antennai; not or only a little 



longer than the third, 

 f First joint of the antenna; not longer than the head 

 or than the second joint. Membrane of the fore 

 wings with irregular veins and areolets. - PvuRiiocoiiis. 



tf First joint of the antenna; longer than the head. 

 Membrane of the fore wings with longitudinal 

 veins. ------ Odoxtopus. 



** Fourth joint of the antenna- much longer than the 

 third. 

 f Anterior divisions of the protliorax large and tumid. PiiYsoi>Kr-TA. 



If Anterior divisions of the protliorax narrow. - Dvsdeucus. 



B. Eyes petiolated. ... - - Ectatops. 



LAKGID^. 



A. Body oval, broad. Eyes not or but slightly petio- 



lated, not very prominent. - - - Largus. 



B. Body long, linear. Eyes much petiolated, very 



prominent. _ - . - - Acinocouis. 



