From Bulletin Illinois Stale Laboratory oi" Natural History 

 (Clianipaii^n. 111.). Volume // /• Published 



IsM 



Article XV. — Suno2)sis of the Siib/amUies and Genera of 

 the North American Cercojiidce, ivith a Bibliographieal 

 (Did Synonipuical CafaJogue of the Described Species of 

 North America^ By F. W. Goding, M. D., Ph. D. 



The characters recognized as of family value by St4l and 

 most of the American students of this group are as follows : 

 Front convex, or compresso-produced ; ocelli two, situated in 

 the vertex, before the base. Thorax large, sexangular or tra- 

 pezoidal. Scutellura small or medium, triangular. Tegmina 

 frequently coriaceous. Legs remote from sides of body, con- 

 forming to it ; coxae, especially the posterior, short ; tibia; 

 smooth, posterior armed with one or two spines, apex with a 

 crown of spinules.f 



Synopsis of Subfamilies. 



Anterior margin of thorax straight ; eyes equally long and 

 broad Cercopin^, Stal. 



Anterior margin of thorax rounded or angular ; eyes some- 

 times transverse ; scutellum flat, triangular, 



Aphrophorin^, Still. 



Synopsis of Genera. 



SUBFAMILY OEROOPIN^, Stal. 



A. Front destitute of a longitudinal carina. 



a. Front destitute of a longitudinal sulcus. 



Tomaspis, Am. & Serv. 

 aa. Front furnished with a longitudinal sulcus. 



RhiiUddax^ Am. & Serv. 

 AA. Front furnished with one or more longitudinal caringe 

 at middle. 



*Mexico, Central America, and the West Indies are included. 



t [q Insect Life, Vol. V., page 150, Messrs Riley and How- 

 ard place the geuus Homilodisca in this family, while all othtr 

 writ'irs place it in the Jassiiie, used ia its broadest s^'us-. 



