FAM. MEMBRACIDiC 175 



Membracidae but from any other insects in the world. The distinctive characteristic is of course the 

 enormously swollen, inflated, reticulated, sac-hke pronotum. 



Head triangular and trilobed; base nearly straight; eyes large, globular, protruding; ocelh very 

 large, conspicuous, elevated, more than twice as far from each other as from the eyes and situated far 

 above a hne drawn through centers of eyes, very close to the basal margin of the head ; inferior margins 

 of genae modified into distinct, triangular, pointed lobes; clypeus extending for half its length below 

 inferior margins of genae ; base of beak expanded into a broad flattened plate. Entire pronotum devel- 

 oped into a large, reticulated, swollen, hoUow sac with a honey-comb appearance which extends forward 

 over the head and backward almost to the tips of the tegmina, impinging on the tegmina throughout its 

 inferior margin ; no definite metopidium ; no definite median carina ; humeral angles weak and rounded ; 

 no definite posterior process ; scuteHuin not visible. Tegmina broad, hyaline; base narrowly semi- 

 opaque ; tips broadly rounded ; veins strong ; five apical cells ; one discoidal cell ; apical limbus well devel- 

 oped. Hind wings with four apical and no discoidal cells. Legs simple and fragile; tibiae slightly 

 dilated; tarsi about equal in length. 



Type infiata Fabricius. 



Geogpaphical distribution ; The three Brazilian species here listed are the only ones described 

 for the genus. 



1. hamulata Stal, Hem. Fabr. H : 52 (1869). Brazil. 



2. inftata Fabricius, Mant. Ins. II : 262. i (1787). — Pl. 9, fig. I 35. Brazil. 



inermis Fairmaire, Rev. Memb. 5o6. 2. (1846). 

 frondosa Buckton, Mon. Memb. 206 (igoS). 



3. informis Westwood, Ann. Nat. Hist. 119 (1842). Brazil. 



158. GENUS LYCODERES Germar 



Lycoderes Germar, Rev. Silb. III : 2^9 (i835). 

 Corythophora Stal, Hem. Fabr. II : 53 (1869). 

 Lophucha Stal, Hem. Fabr. II : S4 (1869). 

 Rhyparoptera (part) Stal, Hem. Fabr. 11 : 54 (i86g). 



Characters : .A very distinct genus characterized by the semi-foliaceous pronotum which is 

 elevated into a compressed, bilobed or dilated anterior process. Head subfoliaceous, subquadrate, 

 about as wide as high; base arcuate ; eyes lateralh* flattened ; ocelli large, prominent, twice as far from 

 each other as from the eyes and situated far above a line drawn through centers of e\ es, near the upper 

 margin of the head; inferior margins of genae flattened, angular, protruding forward ; clypeus weakly 

 trilobed, projecting for one-third its length below inferior margins of genae. Pronotiim subfoliaceous, 

 much fiattened laterally, elevated in front into a ffattened horn which is dilated or bilobed at the tip ; 

 no definite metopidium, the front of the pronotum gradually merging into the anterior surface of the 

 horn; median carina usually obsolete on the metopidium and front of the horn but strong on the back 

 of the horn and on the dorsum ; humeral angles weak and rounded ; sides of pronotum punctate and 

 often ridged; posterior process tectiform, exteiiding to the internal angles of the tegmina; scutellum 

 hardly visible. Tegmina entirely exposed, translucent; basal and costal margins coriaceous and punc- 

 tate ; apex more or less punctate; five apical cells; one discoidal cell ; no apical limbus. Tibiaj of all 

 of the legs distinctly flattened; tarsi about equal in length. 



Type hippocam.pus Fabricius. 



