HEMIPTERA. -531 



membrane never more than five. Tarsi three-jointed ; the last 

 joint furnished with pulvilli. 



Lygseus, p., Fab. Syst. Eh. (1803); Lot. Gen. iii. (1807); Lam. 



Hist. Nat. iii. (1816). 

 Coreides, p., Leach, Ed. Enc. ix. (1815). 

 Lygeites, Lap. Hem. 32 (1832); Spin. Hem. 224 (1837). 

 Lygseodes, p., Burm. Handb. ii. (1835). 

 Lygseidse, p., Westw. Int. ii. (1839). 

 Infericornes, Am. $ Serv. Hem. 248 (1843). 

 Infericornes et Articulipennes, Amyot, Ann. Soc. Ent. Fr. 2 me ser. 



iii. 491 & iv. 377. 

 Lygseitse, p., Spin. Tav. Sin. Hem. (in Mem. Soc. Ital. Sci. Mo- 



dena, xxv.) (1850). 

 Xylocorides et Lygseodes, H. Sch. Wanz. ix. 169 & 188 (1850). 



Family 1. LYG^EID^E. 



Rostrum of four distinct joints. Corium without an appendix; 

 membrane generally with four or five distinct nervures. 



Lygeides et Rhyparochromides, Am. fy Serv. Hem. 248 & 251 



(1843). 



Infericornes, Amyot, Ann. Soc. Ent. Fr. 2 me ser. iii. 491. 

 Lygseodes, p., H. Sch. Wanz. ix. (1850). 



TABLE OF GENERA. 



I. Membrane with one or more cells at 

 the base, two or more of the ner- 

 vures being united by transverse 

 nervures. 

 A. Membrane with one basal cell. 



a. Basal joint of the rostrum pass- 

 ing the base of the head 1. LYO^BUS. 



b. Basal joint of the rostrum not 

 passing the base of the head. 



1. Anterior thighs unarmed. 



a. Third and fourth nervures 

 of the membrane united 

 near their base ; membrane 



opaque 2. AROCATUS. 



b. Third and fourth nervures 

 of the membrane running 

 parallel to each other to the 

 base, not united; membrane 

 transparent 4. NYSIUS. 



