196 U.S. NATIONAL MUSEUM BULLETIN 261 



from synonymy, and assigned to it the name H. vitripennis (Germar), 

 in spite of the fact that the Germar species was described from Brazil. 

 It is not possible to follow this because I have found none of the species 

 with a range which included both Brazil and Central America. Sig- 

 noret's H. ichthyocephala was described from Central America and his 

 illustration of the habitus would fit the common Central American 

 species. It is in this sense that the name H. ichthyocephala (Signoret) 

 is here applied. The type of H. ichthyocephala^ like that of H. vitripennis 

 (Germar), was presumably in the Germar collection, hence the true 

 identity of the Germar name must remain in doubt. 



The genitalia of the male lectotype of Homalodisca ignorata Melichar 

 are like those of H. apicalis Schmidt except for the structures illustrated 

 (figs. 181, 182). The male genitalia of the lectotype of H. indefensa 

 Melichar agree with figure 186. 



Illustrations published in my (1958a) synopsis of the species of 

 Homalodisca occurring in North America are not repeated here. H. 

 atrata (Fowler) is placed in the synonymy of H. insolita (Walker) on 

 the basis of a study of the genitalia of a male specimen compared with 

 the lectotype of the latter. 



The holot>^e of Homalodisca aurigena (Walker) and the lectotype of 

 H. admittens (Walker) are both females. The markings of the anterior 

 dorsum of both are like Fowler's (1899a, pi. 14) illustration of Phera 

 vitripennis (Germar). 



The lectotype of Homalodisca excludens (Walker) is moulded and the 

 original description is poor; it is certainly a Homalodisca, but the specific 

 identity is unknown. 



SPECIES OF HOMALODISCA 



[♦Type not seen. fKnown only from female. §No specimens seen.] 



Udmittens (Walker), 1858b:227 (Proconia). Mexico. 

 Uurigena (Walker), 1858b:228 (Proconia). 



apicalis Schmidt, 1928c: 58. Costa Rica. 



coagulata (Say), 1832a: 13 (Tettigonia). S. U.S.A., Mexico. 



cornuta, new species. Guatemala. 



elongata Ball, 1936a: 17. Texas, Arizona. 

 ^excludens (Walker), 1858a:98 {Proconia). Venezuela. 



hambletoni, new species. Mexico. 



*ichthyocephala (Signoret), 1854c:494 (Tettigonia). Arizona, S. Texas, Mexico, 

 GuatemaJa, El Salvador, Costa Rica. 



ignorata Melichar, I924a:240. Paraguay, 

 fj^no/a Melichar, 1924a:235. Brazil. 



in^*afa Melichar, 1924a:239. Costa Rica. 



