BEACON. 325 



The group of B. alticola. 



Abdomen aciculate, the second segment in the middle rugosely punctured. Metanotum 

 keeled in the middle, rugose on either side of the keel. Eyes oblong, reaching to the 

 base of the clypeus. 





21. Bracon alticola. 



Niger; mandibulis, abdomine pedibusque rufo-testaceis ; tibiis intermediis, tibiis tarsisque posticis, nigris, 

 tarsis anticis fuscis ; artieulatione suturiformi recta ; alis fere fuscis, stigmate et nervis testaceis, cellula 

 cubitali 2 a quam 3 a breviore. $ . 



Long. 4*5 millim. ; terebra fere 2 millim. 



Ha b. Mexico, Ciudad in Durango 81 00 feet (Forrer). 



Antennae stout, scarcely attenuated towards the apex ; the flagellum densely covered 

 with a microscopic pile. Head shining, the face aciculate, bearing some pale hairs ; 

 clypeus at the base almost transverse ; trophi large, dull testaceous. Thorax shining, 

 im punctate, the pleurae and metanotum covered with longish white hair ; parapsidal 

 sutures large, deep ; a wide, transverse, longitudinally keeled furrow in front of the 

 scutellum. Petiole vertical, deeply excavated at the base, aciculate, the inner furrow 

 wide and deep and rounded at the base and apex ; the petiole above and the punctured 

 central part of the second segment black ; the base of the second segment distinctly 

 margined. The cubital nervure is but slightly curved, the recurrent nervure is 

 interstitial ; the first transverse cubital nervure is very oblique, so that the upperside of 

 the second cubital cellule is much shorter than the lower. The legs are densely covered 

 with pale hairs ; the spurs are testaceous ; the anterior coxse are black at the base. 



The smallest species of Bracon known from our region. 



ii. Abdomen punctured. 



The group of B. hebes. 



Abdomen finely and closely punctured all over. Head shining, the face obscurely 

 aciculate. Eyes oval, not reaching to the base of the clypeus. 



Differs from the other groups with punctured abdomen in the punctuation being 

 very close and fine. 



I Et 



22. Bracon hebes. 



Bufo-testaceus ; flagello antennarum nigro ; alis fumatis, stigmate sordide testaceo ; artieulatione suturiformi 



recta. $ . 

 Long. 4*5 millim. ; terebra 1*5 millim. 



Hab. Mexico, Presidio (Forrer). 



Antennee 3 9-41 -jointed, longer than the body, microscopically pilose. Head sparsely 



