412 N. C. AGR. EXP. STA. BUL. 239 
I have studied the lectotype of Cicadella apicula Osborn. 
I have seen two specimens of M. delicatula Melichar, both females, both 
from MMB. One has a second specimen consisting only of wings on the same 
pin. I select the specimen mounted above on its pin as lectotype. It bears 
labels “‘S. Antonio” and ‘‘Q” and ‘“‘delicatula M/det. Melichar.” and 
“Typus” and ‘‘Microgoniella/delicatula M.” and the institutional label. This 
specimen is not illustrated here. The anterior dorsum is very much like the 
present illustration of Subrasaca rhienetta (Melichar) (fig. 394a) except that the 
posterior transverse band of the pronotum is black, and that there is a median 
pale spot on the scutellum. The produced seventh sternum does not agree 
with Suwbrasaca. It seems advisable to retain the species in Microgoniella until 
males are available. 
My interpretation of Cicada pudica Fabricius is based on drawings of the 
lectotype and specimens conforming to the drawings. The Guianas are miss- 
ing from the known distribution of this species, a conspicuous absence in view 
of the number of Fabrician neotropical species based on specimens from those 
countries. My interpretation of Tettigonia dilutipes Stal is based on a study of 
the lectotype of that nominal species. 
I have interpreted Tettigonia illustris Signoret mostly in conformity with the 
original illustration. This agrees with a specimen from Sao Paulo, from which 
I made sketches in Vienna. I have returned specimens to some institutions 
with the ms. name Microgoniella chiasta Young, a nomen nudum. 
My interpretation of Tettigonia sociata Fowler is based on a study of the fe- 
male lectotype and male specimens agreeing with it and with the original il- 
lustration. 
I found no specimens of Erythrogonia tristicula Melichar during my visit to 
MMB. My determination of this species is based on a single specimen bearing 
Melichar’s determination label, sent to me subsequently from the Moravian 
Musuem. 
Of a pair of specimens of Microgoniella vagans Melichar from the Moravian 
Museum, the female is presently selected as lectotype and has been so 
labeled. It bears labels: ‘““Costa Rica’? and ‘‘vagans M./det. Melichar.”’ and 
“Typus” and ‘“‘Microgoniella/vagans M.”. 
SPECIES OF MICROGONIELLA 
apicula (Osborn), 1926b:186 (Cicadella). Bolivia. New combination. 
delicatula Melichar, 1951a:99. Colombia. 
gracilis, n. sp. Colombia. 
illustris (Signoret), 1854a:11 (Tettigonia). Venezuela, Fr. and D. Guiana, N. and S. Brazil. 
plutoniella, n. sp. Panama. 
pudica (Fabricius), 1803a:65 (Cicada). Colombia, Peru, Bolivia, S. Brazil. 
dilutipes (Stal), 1862e:41 (Tettigonia). 
comperta Melichar, 1951a:97. New synonymy. 
quevedoensis, N. sp. Ecuador. 
sociata (Fowler), 1900a:262 (Tettigonia). Costa Rica, Panama, Colombia. 
vagans Melichar, 1951a:96. New synonymy. 
tristicula (Melichar), 1926a:391 (Erythrogonia). Colombia. New combination. 
