322 HYMENOPTEEA. 



punctured ; clypeus not projecting, and not separated by a furrow from the face ; 

 the front is excavated, the excavation moderately deep and separated from the ocelli 

 by a space greater than its own length. Thorax impunctate, shining ; mesonotal 

 sutures obsolete ; pleurae and metanotum but sparsely pilose. Petiole perpendicular, 

 the central part almost straight, the furrows broad. The suturiform articulation 

 narrow, shallow, transverse. The abdomen somewhat shorter than the head and thorax 

 together. 



16. Bracon chontalensis. 



Niger, abdomine rafo ; alis fuscescentibus ; oculis basin mandibularum attingentibns. 

 Long. 6'5 millim. 



Edb. Nicaragua, Chontales (Janson). 



Antenna? somewhat longer than the body, black, the flagellum dull brownish beneath, 

 microscopically pilose. Head narrower than the thorax, shining, impunctate, nar- 

 rowing considerably behind the eyes ; the central furrow in the front broad, deep ; face 

 sparsely pilose; tips of the mandibles reddish; eyes large, oval, reaching nearly to 

 the base of the mandibles; the orbits externally on the lower side dull reddish. 

 Thorax shining, impunctate, the sides sparsely pilose; the oblique furrow on the 

 metapleurae deep. Abdomen a little shorter, and, if anything, broader than the 

 thorax. Petiole perpendicular. 



Similar in coloration to B. excelsus, but easily known from that species by the eyes 

 reaching nearly to the base of the mandibles. 



The specimen described below (also from Chontales) is probably the male : — 



Antennae a little longer than the body, the pedicel very short ; first joint of nearly 

 equal width throughout, and about the length of the third; the flagellum closely 

 pilose, fuscous on the lower side. Face densely covered with longish white hair, 

 impunctate, smooth ; clypeus slightly projecting, separated from the face by a not very 

 distinct furrow. Front slightly depressed in the centre ; a furrow leading into it from 

 the ocelli. Thorax shining, the metathorax covered with long white hair. Abdomen 

 shorter than the thorax and head together, becoming gradually narrower from the base 

 of the second segment ; petiole almost perpendicular, the central part widening towards 

 the apex, its sides straight; suturiform articulation straight, minute. The second 

 cubital cellule shorter than the third; the recurrent nervure interstitial. Length 

 6 millim. 



17. Bracon evolans. 



Niger; tarsis anticis palpisque albis ; abdomine rufb, articulatione suturiformi sinuata; alis fuliginosis. tf- 

 Long. 7 millim. 



Hah. Mexico, Presidio (Forrer). 



Antennae longer than the body, 41-jointed, microscopically pilose'; first joint a little 



