326 HYMENOPTERA. 



pilose; frontal furrow narrow, shallow; palpi longish, pale testaceous. Parapsidal 

 furrows not deep ; a shallow, not very distinct, furrow runs down the centre of the 

 metanotum. Petiole semiperpendicular, shining, impunctate. The abdomen is about 

 the length of the head and thorax united. The recurrent nervure is nearly interstitial ; 

 the second cubital cellule shorter than the third. The hind tarsi are more or less 

 blackish. 



The group of B. democraticus. 



Abdomen irregularly, longitudinally punctured ; central part of the petiole shield-shaped, 

 not narrowed at the apex, the apex transverse ; second segment without any depres- 

 sions, and with a smooth, triangular area at the base; suturiform articulation 

 wide, deep, longitudinally striated. Abdomen {in the female) shorter than the head 

 and thorax united, and wider than the thorax. Eyes oval, reaching to the apex of 

 the clypeus. 



1 (2) . Head and legs luteous blandicus. 



2 (1). Head and legs black, wholly or in part. 



3 (4) . Head and legs entirely black ; the area on second segment shield- 



shaped, as broad as long democraticus. 



4 (3) . Head and legs partly black ; the area on second segment much longer 



than broad (males only are known). 



5 (6) . Abdomen much longer than the head and thorax united ; suturiform 



articulation not striolated ; ocelli not enclosed in black .... comparatus. 



6 (5) . Abdomen scarcely longer than the head and thorax united ; suturi- 



form articulation striolated ; ocelli broadly surrounded with black, crudelis. 



Y\ 23. Bracon blandicus. (Tab. xiii. fig. 17.) 



EMo-testaceus ; antennis nigris; apice tibiarum posticarum tarsisque fuscis; alis fuseescentibus, stigmate 



' fusco ; terebra corporis longitudine. 

 Long. 7 Tnillim. ; terebra fere 7 millim. 



Eab. Mexico, Northern Sonora (Morrison). 



Antennae originating from distinct tubercles, scarcely so long as the thorax and 

 abdomen together ; basal joint dilated at the apex, slightly curved on the lower side, 

 about three times as long as the second ; third and fourth joints subequal. Face shining, 

 impunctate ; front but slightly dilated above the antennae ; central furrow indistinct. 

 Metanotum with a gradual slope to the apex. Petiole smooth, impunctate ; the central 

 part broad and depressed at the base ; inner furrow broad and deep, its outer margin 

 acute, the outer furrow narrower, situated lower down than the inner, and becoming 

 narrower towards the base. Segments 2-4 irregularly reticulated, the apical ones 

 impunctate ; first furrow narrow, moderately deep, nearly straight. The recurrent 

 nervure is interstitial ; the second cubital cellule much shorter than the third. 



