8 HYMENOPTEBA. 



8. StTOngylogaster pilicornis. (Tab. II. fig. 1, $ ; la, head, from the side; 

 lb, from front; 1c, claws.) 



Niger, nitidus, pilosus, antennis longis, pilosis ; facie, pronoto, metapleuris, abdomine (apice excepto) 

 pedibusque luteis ; tarsis posticis tibiarumque apice nigris ; alis flavo-hyalinis, apice fusco, costa et 

 stigmate testaceis. 



Long. 11 millim. 



Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 



Head not transverse in front, sutures on vertex deep, frontal area small but deep, 

 broader at apex than base, with a clear suture round the ocellus at the sides. Antennal 

 tubercles large, projecting, lateral fovea small ; central deep in the centre, from which 

 it projects sharply before and behind. The antennse are long, filiform, densely pilose, 

 attenuated at the apex ; basal joint with a short pedicle, which is white, more than 

 double the length of the second; third joint a little longer than the fourth, the last 

 joint longer and thinner than the eighth. Face from the antennal fovea, labrum, clypeus, 

 and mandibles (except at apex) testaceous. The mesopleurse are black, except a spot in 

 front, below the wings, the metapleurse yellowish ; metanotum black ; the three apical 

 segments of abdomen and sheath, which is hairy, black. Wings large ; nervures fuscous, 

 darker at apex ; the transverse radial nervure is received a little in front of the middle 

 of the third cubital cellule ; there is a bulla on the transverse radial and second and third 

 transverse cubital ; the transverse median nervure is received a little beyond middle of 

 the cellule ; a single spurious vein proceeds from the radial bulla, and a double one from 

 that on the second transverse cubital, through the bulla on the third to the apex of the 

 wing. The claws are bifid, the spurs a little more than one third of the length of 

 the metatarsus, the posterior fuscous. 



The largest of the Central- American species. 



9. Strongylogaster pilipennis. 



Luteus, capite (ore excepto), antennarum apice, mesonoto fere toto, sterno abdominisque apice nigris ; alis 



nigris, medio flavo-hyalinis, stigmate luteo. 

 Long. lOi millim. 



Hob. Chiriqui, David (Champion). 



The sutures on the vertex are deep and wide, the frontal narrower and not so deep ; 

 the frontal area is not depressed ; there is only an indistinct furrow round the lower 

 ocellus; the central fovea is large, roundish, and shallow. The clypeus is almost 

 transverse ; it, as well as the labrum, is white ; the apex of the mandibles piceous. The 

 eyes project considerably, converge towards the lower side, and reach close to the 

 mandibles. The head is large, retreats slightly in front and considerably so behind. 

 The middle lobe of the mesonotum is testaceous ; the lateral lobes are black, as is also the 

 scutellum, except at the apex, where it becomes brownish. The metanotum is brownish 

 testaceous. The transverse radial nervure is received in the apical third of the cellule ; 



