CICADELLINAE: PART 2. NEW WORLD CICADELLINI 497 
Mesogonia charapensis, NEW SPECIES 
FicuRE 407, PAGE 496 
Length of male 7.8-8.1 mm. Head with median length of crown from six- 
tenths to three-fourths (type) interocular width and from slightly more than 
one-third to more than four-tenths (type) transocular width, ocelli located on 
a line between anterior eye angles, each equidistant from median line of 
crown and adjacent anterior eye angle; antennal ledges with anterior margins 
slightly oblique in lateral view; clypeus distinctly concave medially. Thorax 
with pronotum not as wide as head; forewing membranous basally and 
apically with veins not very distinct. Other external anatomical characters as 
in M. retrorsa, n. sp. 
Male genitalia closely similar to those of M. bicornuta, n. sp. (see above), ex- 
cept that the pygofer process is not bifid. Female unknown. 
Crown black with a large yellow area on each side of disk and narrow 
yellow stripe bordering each inner eye margin; pronotum and scutellum 
yellow with a dark area over posterior two-thirds of pronotum, scutellar apex 
black; forewing membranous in basal third and at apex, remainder black with 
a narrow dull orange stripe bordering costal margin; face and thoracic pleura 
black with sordid paler markings on proepimeron and mesepisternum. Legs 
yellow marked with black. 
Holotype male and five additional males, Rio Charapa, Peru, September 
12-16, 1911 (C. H. T. Townsend) (USNM). 
M. charapensis, n. sp., is related to bicornuta (above), in the discussion of 
which distinguishing characters are set forth. 
Mesogonia brevicorne, NEW SPECIES 
FicgurE 408, PAGE 498 
Length of male 7.8 mm. Head with median length more than six-tenths in- 
terocular width and approximately one-third transocular width, carina at 
transition from crown to face not very distinct, ocelli located slightly behind a 
line between anterior eye angles, each closer to median line of crown than to 
adjacent anterior eye angle; clypeus flattened medially, muscle impressions 
indistinct. Thorax with pronotum not as wide as head, dorsopleural carina ex- 
tending forward to eye margin; forewing coriaceous except apically. Other ex- 
ternal anatomical characters as in M. retrorsa, n. sp. 
Male pygofer moderately produced, posterior margin broadly rounded, with 
few anteapical macrosetae, with a short apical acute process extending 
mesally; plates extending as far posteriorly as pygofer apex, without a dorsal 
lobe in lateral view, each gradually tapered at midlength, with uniseriate 
macrosetae and a number of lateral microsetae; style extending posteriorly 
farther than apex of connective, without preapical lobe, gradually tapered to 
acute apex; connective Y-shaped with arms widely divergent, keeled medially; 
aedeagus slightly biundulate, in lateral aspect gradually broadened in apical 
two-thirds, apex broadly rounded, without processes; paraphyses vestigial. 
Female unknown. 
