794 N. C. AGR. EXP. STA. BUL. 239 
Male genitalia: Pygofer moderately produced, anteapical dorsal margin 
slightly concave, posterior margin broadly convex, macrosetae few, extending 
in two groups from middle of disk, one dorsally, the other ventrally along 
caudal pygofer margin, with a group of long microsetae near ventral margin. 
Plates elongate triangular, not extending posteriorly as far as pygofer apex, 
with multiseriate macrosetae. Style extending posteriorly beyond apex of con- 
nective, without preapical lobe. Connective triangular. Aedeagus slender, 
elongate, with elongate dorsal apodemes, shaft extending posterodorsally, 
slightly bifid apically; gonopore ventral and slightly anteapical. Paraphyses 
absent. 
Female abdominal sternum VII with posterior margin subangularly 
produced, narrowly rounded apically. Ovipositor with second valvulae ex- 
panded, each with broad quadrate primary teeth on apical two-thirds of dor- 
sal margin beyond basal curvature almost to apex, each of the primaries with 
a number of small secondaries, with a number of minute anteapical dorsal 
and ventral denticles before narrowly rounded apex, ventral margin convex. 
Pygofer with posterior margin convex, disk with numerous irregularly 
arranged small macrosetae on posterior half. 
There is much variation in color in A. salamandra (Signoret). 
Aguahua, new genus, is known only from the type-species, which occurs in 
French Guiana, Venezuela, Colombia, and Bolivia. A. salamandra (Signoret) is 
similar in size and general appearance to some species of Stehlikiana, new 
genus, but males differ markedly in the more slender aedeagus, and females in 
the more extensive toothed portion of the second valvulae of the ovipositor and 
the lack of an emargination on the posteroventral pygofer margin. Aguahua is 
placed near Kapateira, new genus and to Nielsonia, new genus, because of 
similarity in general appearance and in the second valvulae of the ovipositor. 
The similarity in both male and female genital structures between Aguahua 
and Selvitsa, new genus, indicate a relationship of the Oragua group of genera 
to Nielsonia, Kapaterra and their related genera. 
My interpretation of Tettigonia salamandra (Signoret) is based on a com- 
parison of the male illustrations here with the lectotype. 
Early in this study I misdetermined dull greenish-tan specimens of 
salamandra as A. rosipennis (Osborn), and unfortunately a number of these were 
returned to the institutions which loaned them. The Osborn species does not 
belong in Aguahua. 
108. NIELSONIA, NEw GENus 
FIGURES 643-646 
Type-species: JVielsonia praestigia, new species. 
Length 8.4-10.6 mm. 
Head moderately produced, median length of crown varying from slightly 
more than one-half to slightly more than seven-tenths interocular width and 
from one-third to almost one-half transocular width, anterior margin broadly 
rounded in dorsal view, without a carina at transition from crown to face, 
ocelli located on or*slightly behind a line between anterior eye angles, each 
