218 Annals Entomological Society of America  [Vol. V, 
punctate, the middle field smooth, triangular, short, but prolonged 
behind as a narrow elevation; on each side with a deep; oblique impres- 
sion reaching to the posterior angles. Second suture straight medially, 
curved forward laterally, very broad, crenulate or striate, the anterior 
angles separated by a lateral, nearly transverse, crenulate groove. 
Third segment with separated anterior angles and a deep crenulate 
transverse groove near the base; fourth and fifth segments similarly 
sculptured, and the sixth obsoletely so. Legs slender. Wings with 
black stigma; first section of radius one-third as long as the second and 
two-thirds as long as the first transverse cubitus; second transverse 
cubitus with a hyaline spot below, slanted outwards above; cubitus 
not very strongly curved at base; submedian cell as long as the median; 
recurrent nervure received just before the apex of the first cubital cell; 
discoidal vein broken a little below the middle. 
One female from Camp 39, Madeira-Mamoré R. R., Rio 
Madeira, Brazil (Mann and Baker). 
This does not seem to be very closely related to any other 
species of similar color. 
Iphiaulax starksi sp. nov. 
Female. Length 7.5 mm., ovipositor 3mm. Black, the scutellun 
and metanotum rufous, first four segments of abdomen, sides and base 
of fifth, fulvous; four anterior legs beyond the knees, and a stripe on 
the outer edge of hind tibiz yellowish; ovipositor fuscous. Wings 
yellowish hyaline, slightly darkened below the black stigma and infus- 
cated beyond the base of the third cubital cell, veins all fuscous. Head 
one-third broader than thick, obliquely rounded behind the eyes. Face 
flattened, finely rugulose, the clypeus with a sharp, raised marginal 
line. Palpi pale. Antenne nearly as long as the body; scape almost 
three times as long as thick; first flagellar joint longer than the. second; 
following quadrate. Mesonotum with the parapsidal furrows distinct 
anteriorly; scutellum with a crenulate line across the base. Metathorax 
scarcely punctulate laterally, its spiracles round. Abdomen rather 
broad. First segment at apex nearly twice as broad as at base, its 
median elevation oval, much narrowed basally and separated from the 
lateral carina by a rugose groove. Second segment with a short, broad 
basal median elevation which is prolonged to the apex as a carina; on 
each side with a deep oblique depression that marks off the anterior 
angles, but does not attain the posterior margin. Second suture 
broad, striate, straight medially and curved forward laterally as the 
separated angles of the third segment are produced forward; second to 
fourth segments sparsely, deeply and coarsely punctate. Legs slender. 
Wings with the first section of the radius nearly one-third as long as the 
second and two-thirds as long as the first transverse cubitus; second 
transverse cubitus nearly perpendicular, with a hyaline dot above and 
below, cubitus bent at the base; recurrent nervure received well before 
the tip of the first cubital cell; discoidal vein broken a short distance 
below the middle; submedian cell as long as the median. 
