CICADELLINAE: PART 2. NEW WORLD CICADELLINI 483 
and these two nominal species are therefore not placed in synonymy. There is 
a possibility that both should be synonymized with ferrugatula, but a good 
series of the last should be compared with the two lectotypes before such an 
action is taken and hence all three nominal species are considered valid at 
present. 
The genitalia of the male lectotype of Tettigonia larvatula Breddin are like the 
illustrations of the genitalia of the lectotype of Tettigoniella personatula Jacobi 
published here. In this species the male plates vary in the degree to which 
they are truncate apically and in whether the apical margin is convex or 
transversely rectilinear. The anteapical dorsal lobe of the pygofer may be well 
developed or not. 
Topotypic specimens of Mesogonia ludicula (Osborn) which agree well with 
the original description and illustrations are the basis of the present interpre- 
tation of this species. The present interpretation of M. olivatula (Osborn) is 
also based on the literature. 
The male genitalia of the lectotype of Tettigoniella paganula Jacobi are like 
figure 412. I placed a lectotype label on a male of Graphocephala plebejula 
Osborn, from the Ohio State University collection. It bore labels: ‘‘Archi- 
dona/(Ecuad.)/R. Haensch S.” and ‘“‘Herbert/Osborn/Collection” and 
“Tettigonia/plebejula/Bredd.”’. It agrees closely in external characters with 
specimens of M. paganula (Jacobi). The Breddin name was never published. 
The present interpretation of Mesogonta semicinctula (Osborn) rests on a gross 
comparison of a specimen of which the genitalia are illustrated in figure 409 
with a specimen of Cicadella semicinctula Osborn in the Ohio State University 
collection. I placed a lectotype label on the latter. It bears labels: ‘“Chulu- 
mani/Bolivia/Nov. (date illegible) ’98” and “10199” and ‘‘Holotype/Cicadel- 
la/semicinctula/Osborn”’ and ‘““Herbert/Osborn/Collection”. The species is 
distinctly marked externally. The male genitalia and the anterior dorsum of 
the lectotype of Tettigoniella cornelia Distant, a preoccupied name, agree well 
with the specimen from Itaituba, Brazil illustrated in figure 409. 
Mesogonia stillatula (Breddin) is a species which is distinctively marked ex- 
ternally. The lectotype, without abdomen, agrees with the illustration (fig. 
422) of the syntype from USNM, as does the lectotype of Tettigoniella gran- 
dinula Jacobi. 
The genitalia of the male lectotype of 7. tolosa Distant agree with figure 
410. The holotype of Graphocephala curvatula Osborn is the same externally as 
specimens of folosa. : 
SPECIES OF MESOGONIA 
aliena, n. sp. Ecuador. 
apulia (Distant), 1908a:523 ( Tettigonella). Ecuador. 
atramentatula (Breddin), 1901h:107 ( Tettegonia). Peru, Bolivia. 
cruentula (Breddin), 1905c:182 ( Tettigoniella). New synonymy. 
tractatula (Jacobi), 1905c:182 ( Tettigoniella). New synonymy. 
thea (Distant), 1908a:520 ( Tettigoniella), New synonymy. 
attenuata (Osborn), 1926b:222 (Graphocephala). Peru, Bolivia. New combination. 
azeka (Distant), 1908a:523 (Tettigoniella). Peru. New combination. 
bicornuta, n. sp. Peru. 
