(312 NEW SPECIES OF BRACONIDyE. 



smooth, convex and triangularly rounded behind ; metathorax rounded 

 posteriorly, smooth and polished. The abdomen is longer than the 

 head and thorax together; the 1st segment, laterally, with broad, 

 deep grooves, forming a broadly oval central plate; on the 2d is a large 

 lo/cngoidalshaped shield, extending almost to the tip of the segment, 

 and laterally on each side of this shield are distinct longitudinal de- 

 pressions; the 3d segment is separated from the 2d by a distinct, slightly 

 crennlated suture; the following segments are not distinctly separated, 

 and all are smooth and polished. 



The wings when folded extend slightly beyond the apex of the abdo- 

 men; the venation as in typical species in the genus Bracon; there is a 

 pale stripe across the middle of first submarginal cell and another clear 

 spot behind the first discoidal cell. 



JI«l>it<it,— Cv\ster County, Colorado. 



Described from one female specimen, sent to the Department by Mr. 

 T. D. A. Cockerell, West Cliff, Custer County, Colorado. 



This is the first species in this interesting genus to be detected in our 

 fauna, and may at once be recognized from the Braconids by its rostri- 

 form head and peculiar color. 



It might easily be mistaken for an Agathis, but the venation will 

 readily separate it from that genus. 



BRACON Fabrichls. 



Bracon agrili n. sp. 



Female.— Length 7t nim ; ovipositor 2f" im . Head, labial and maxillary 

 palpi, antennas, thorax, exceptiug metathorax, legs, and ovipositor, 

 black; abdomen orange red. 



The head and thorax are smooth, polished, covered with sericeous 

 pile, the face densely covered, so that the sculpture can not be seen. 

 Head almost as long as wide; a deep longitudinal groove extends from 

 first ocellus to between the antennae; ocelli arranged in a triangle on a 

 rounded convex surface; antennas very long, black, inserted on promi- 

 nent tubercles, the scape not as long as the width between the eyes, 

 the apex obliquely truncate and slightly angulated at outer side. Tho- 

 rax trilobed, the middle lobe prominent; scutellum polished, rounded 

 behind; teguhe black, polished; the surface just beneath the insertion 

 of anterior and posterior wings, reddish. 



The wings are black with a hyaliue streak across the first submargi- 

 nal cell, connected with a largehyaline spot back of the posterior angle 

 of the first discoidal cell. Abdomen broadly ovate, with the segments 

 deeply constricted, the 2d and 3d being cremilate; on the 1st segment 

 is a raised oval plate, on either side of which are broad, deep, lateral 

 grooves; at the base of the 2d is a small lunate shield connected be- 

 hind with a delicate longitudinal keel, the surface on either side being 

 rugose with lines and ridges, and two broad, deep, oblique lateral 

 grooves. Legs entirely black, covered with rather dense, long sericeous 



