226 Annals Entomological Society of America [Vol. V, 
with a broad horizontal, crenulate furrow, rugulose anteriorly and 
rugose-reticulate behind; mesopleura shagreened, with an arcuate 
crenate groove near the upper anterior angle and a similar one along its 
posterior edge. Abdomen as long as the head and thorax, curved 
downwards and obovate when seen from above; sessile, the first segment 
as long as broad at tip, the base somewhat over twice as broad as the 
apex. First and basal two-thirds of second segment longitudinally 
aciculate, the striz becoming finer apically; beyond to the apex smooth 
and shining, with broad rufous margins on the second to fifth segments; 
sixth entirely castaneous. Second segment with a fine impressed line - 
across its middle and traces medially of a second groove just behind 
this line. Legs slightly thickened on the femora; sparsely pilose with 
pale hairs. Wings subhyaline, the stigma narrowly triangular, emitting 
the radius at its center; cubitus arising near the top of the basal vein, 
first transverse cubitus barely discernible, interstitial with the recurrent 
nervure; second one weak, but distinct; first section of the radius three- 
fourths as long as the second; submedian cell slightly longer than the 
median; subdiscoidal vein interstitial, the second discoidal cell wide 
open. Hind wing with a closed basal cell, but without a radius. Ovipos- 
tor as long as the abdomen, fulvous, black at tip; its sheaths piceous. 
One female from Ceara-Mirim, Rio Grande do Norte, 
Brazil, collected by Mr. Wm. M. Mann. ~ 
This species approaches H. nigrescens Ashm. from the 
Island of St. Vincent, but has no white ring at the base of the 
antenne, and the ovipositor is twice as long. : 
Heterospilus dubitatus sp. nov. 
Female. Length 2 mm., ovipositor 0.6 mm. Piceous, varied with 
rufous; legs testaceous, wings subhyaline. Antennz with the scape 
yellow, except at tip; flagellum piceous, fuscous toward the base; palpi 
whitish; collar, mesonotum and mesopleura black; remainder of thorax 
rufous; abdomen black beyond the transverse groove on the second 
segment; rufous basally; ovipositor yellow, with black tip; legs pale 
testaceous, blackened on the tips of the tarsi. 
Resembles H. meridionalis very closely in structure, but the anten- 
ne are 23-jointed, the triangular area on each side of the metathorax at 
base is sharply defined, and not at all sculptured, except for a row of 
punctures around its edge, the first abdominal segment has a very 
distinct elevated median portion defined by a pair of carine that con- 
verge somewhat from the anterior angles to near the tip of the segment; 
the second segment bears two complete, approximate transverse furrows 
near the middle, this segment being considerably longer than wide 
instead of quadrate; and the first section of the radial vein is fully as 
long as the second. 
One female from Ceara-Mirim, Rio Grande do Norte, 
Brazil. (W. M. Mann). 
