BIOLOGIA CENTRALI-AMERICANA. 
ZOOLOGIA. 
Class INSECTA. 
Order RHYNCHOTA. 
Suborder HEMIPTERA-HETEROPTERA (continued). 
Fam. TINGITIDA*. 
This interesting family of Heteroptera is well represented within our limits, and 
includes some very remarkable insects, the modifications in the form of the pronotum in 
some of them (Dicysta, Meyalocysta, &c.) being suggestive of what isto be found in the 
Membracide. Of the seventy-seven species here enumerated, sixty-five are described as 
new. All the American genera characterized by Stal f are, however, represented, with 
the exception of Stephanitis, Leptocysta, and Spherocysta, and seven others are added. 
In the descriptions of the new genera and species the following terms are used for 
the several portions of the elytra: (1) discoidal area; (2) subcostal area (the costal 
area of Stal), the outer limit of this area corresponding with the exterior edge of the 
abdomen when the elytra are closed; (3) costal area (the costal membrane of Stal) ; 
(4) sutural area (the membrane of most authors, exclusive of the small narrow basal 
piece covered by the posterior portion of the pronotum). In the group Tingitini the 
scutellum is completely covered by the prolonged triangular posterior portion of the 
pronotum f{ and the clavus is obsolete. ; 
The terms ‘‘ forma macroptera” and “forma brachyptera,” used by Stal and others 
for forms of the same species, do not seem to be required here. All the specimens 
examined of the genera Acanthochila, Leptobyrsa, Gargaphia, &c. have short wings, 
and those of Améblystira, Teleonemia, Monanthia, &c. long wings. ‘The sex of 
the specimens described below is only mentioned in a few cases, as it cannot always 
* By G. C. Cuampron. 
+ Phyllotingis, Walk. (= Alyattes, Stal), based upon a single species from the Amazons, belongs to the 
Aradidee. 
+ Termed “scutellum” by Uhler and some of the older authors. 
BIOL. CENTR.-AMER., Rhynch., Vol. II., December 1897. I 
