HEMIPTERA. 193 



TABLE OF GENERA. 

 I. Abdomen unarmed at the base. (?EN- 



TATOMIDES, A. fy S.) 



A. Head with the central lobe project- 

 ing beyond the lateral lobes in the 



form of an acute spine 7. PROXYS. 



B. Head rounded, emarginate or bifid 

 at the apex. 



a. Lateral margins of the thorax 

 denticulated or serrated. 



1. Scutellum broad and rounded 

 at the apex*. 



a. Lateral angles of the thorax 

 produced into broad, flat 

 processes; lateral lobes meet- 

 ing beyond the central lobe 2. G ALE D ANT A. 



b. Lateral angles of the thorax 

 spinous or simply prominent; 

 central lobe reaching the 



apex of the head 3. AGRCECUS. 



2. Scutellum of the usual form, 

 more or less pointed at the apex. 



a. Thighs with a distinct spine 



at the apex above 1. LOXA. 



b. Thighs unarmed at the apex. 

 * Second joint of the anten- 

 nae much longer than the 



third 4. MACROMOLUS. 



t Second joint of the an- 

 ^ tennae shorter or but little 

 longer than the third. 

 a. Head rounded or slightly 



emarginate at the apex 5. EUSCHISTUS. 

 /3. Head bifid at the apex, . 

 with the lateral lobes 

 spinous 6. DICER^EUS. 



b. Lateral margins of the thorax 

 smooth. 



1. Scutellum broad and rounded 

 at the apex, 

 a. Lateral angles of the thorax 



distinctly spinous or cor- 



nuted. 



* In one species of the genus Agroscus the scutellum is triangular 

 md nearly of the same form as in the opposite division. 



