I04 



HOMOPTERA 



no definite posterior piocess, the posterior end of tlie pronotum being triangular and not very sharp. 

 The tegmina are almost entirely covered by the sides of the pronotum, only a narrow basal portion being 

 exposed and this exposed portion heavy and coriaceous. The legs are simple with all of the tarsi about 

 equal in length. 



Type auriculaia Olivier. 



Geographical distpibution : A South and Central American genus with about the same 

 distribution as that of Tragopa. 



1. alacris Burmeister, Rev. Silb. IV : i86. 3 (i836). Brazil. 



2. aunculata Olivier, Cigal. Tab. 8, fig. 38 (1780). — Pl. 5, fig. 59. Brazil. 



3. bisttiata Burmeister, Rev. Silb. III : 252. 3(i836). l^razil. 



4. gibbeiula Stoll, Cigal. 62 (1780). Surinam. 



5. involuta Fabricius, Syst. Rhyng. 27. 4 (i8o3). Brazil. 



obliqua Germar, Mag. Ent. IV : i3. 5 (182:). 

 sacrata Burmeister, Rev. Silb, IV : 186. 4 (i836). 



70. genus STILBOPHORA STAL 



Stilbophora Stal, Hem. Fabr. II : 20 (1869). 



Characters : StUbophora was also described as a subgenus by Stal, with characters as foUows : 



« Corpore superne nitido, subtilissime punctulato; parte libera tegminum subtihssime 

 obsoletissimeque remote punctulata, hnea elevata media destituta ; capite obtuso, majusculo, 

 apice ab antico viso obtuse rotundato, parte apicah leviter depressa, margine apicah haud reflexo, 

 fronte valde inflexa, transversa, apice medio truncata. » 



The configuration of the pronotum, as above described by Stal, is not a dependable character 

 since it shows great variation, but the absence of the median carina, the anterior lateral ridges, the 

 rounded posterior apex of the pronotum and the impunctate tegmina should suffice forthe recognition 



of the genus. 



Type nitidula Fabricius. 



Geographical distribution : So far as is known, the genus is Hmited to the northern coun- 

 tries of South America as indicated by the following species : 



1. gihiceps Stal, Rio Jan. Hem. II : 3i. 3(i858). Brazil. 



2. nitidula Fabricius, Syst. Rhyng. 3i. 20 (i8o3). Brazil,Peru, Colombia, Vene- 



zuela. 



3. semiuulum Fabricius, Syst. Rhyng. 32. 21 (i8o3). Brazil, Venezuela. 



4. tripartita Fairmaire, Hev. Memb. 490. 25(1846). Brazil, British Guiana. 



5. xauthocephala Germar, Mag. Ent. IV : 14. 7 (1821). Brazil. 



71. GENUS HORIOLA FAIRMAIRE 



Horiola Fairmaire, Rev. Memb. 492 (1846). 



Characters : The comments which we have made on the subfamily Tragopinae regarding the 



unsatisfactory status of the genera and species apply particularly to the genus Horiola which was 



