1912] Brazilian Ichneumonide and Braconide 213 
37-jointed; scape short, obliquely truncate at tip, less than twice as 
long as thick; flagellar joints all about one-half longer than broad, the 
first longer, twice as long as thick. Face smooth, with a slight convexity 
below the antennez. Clypeus deeply impressed along its upper margin 
and with the lower edge narrowly reflexed. Head behind smooth, 
cheeks sparsely punctulate. Palpi slender. Eyes four times as long as 
the malar space. Mesonotum not noticeably trilobed; parapsidal 
furrows distinct, complete, scarcely convergent posteriorly; its surface 
smooth and shining. Scutellum nearly flat anteriorly, with a transverse 
crenate furrow across the base. Metanotum with a very much abbre- 
viated median carina posteriorly which is continued in front as a very 
finely impressed line. Pleurze shining; mésopleura with a small median 
circular impression. Metapleura with a deep horizontal sulcus just 
below the small circular spiracle. Abdomen short, ovate. First seg- 
ment with a pair of divergent grooves that define a triangular elevation 
medially on the segment behind. Second segment with a pair of small 
oval, very deep and sharply defined impressions anteriorly near the 
median line and also on each side with a much more feebly impressed 
and irregular longitudinal depression. Third segment on each side 
basally with a somewhat oblique transverse impression that does not 
reach the lateral margin however; fourth and fifth segments with similar 
transverse impressed grooves at the middle of the segment, these are 
not oblique and reach the sides of the abdomen, simulating additional 
intersegmental sutures. Legs slender, sparsely clothed with pale 
testaceous hairs as is the entire body in an irregular way. Wings with 
the stigma lanceolate, black, as are also the veins. First section of the 
radius as long as the width of the stigma; second segment twice as long; 
second cubital cell with parallel upper and under sides, the first trans- 
verse cubitus very oblique and the second vertical; recurrent nervure 
received just before the tip of the first cubital cell. 
One female collected by Mr. Wm. M. Mann at Para, Brazil. 
In general appearance this is very much like the nearctic 
Microbracon mellitor and its alies, but the sculpture of the 
abdomen is of an entirely different type. 
Iphiaulax xantothorax Brullé. 
Hist. Nat. Ins. Hyménop., Vol. IV, p. 393 (1846). (Bracon). 
There is a female from Porto Velho, Rio Madeira, Brazil, 
which agrees well with Brullé’s description. The specific name 
is evidently intended to be xanthothorax, but the spelling given 
above appears in the original. 
Bracon crassitarsis sp. nov. 
Female. Length 10-11 mm.; ovipositor 7-7.3 mm. Pale ferru- 
ginous with head, most of legs and abdomen beyond fifth segment, 
black; wings blackish, yellow at base. The black is as follows; head 
except base of mandibles and tip of last palpal joint; antenna; prothorax, 
except upper hind angles; metathorax; fifth abdominal segment (some- 
