74 HYMENOPTERA. 



segments not so shining, almost alutaceous, and punctured; pygidial area keeled 

 laterally, bluntly acute at the apex, bearing deep elongated punctures, and sparsely 

 pilose. Ventral segments with scattered punctures ; the last strongly and closely punc- 

 tured, rufous, black at the extreme base. Legs sparsely pilose ; black behind ; the 

 tibiae lined with yellow in front ; the femora (the posterior pair narrowly) dull rufous 

 in front ; the tarsi reddish-testaceous ; the tibial and tarsal spines and calcaria pale. 

 The clypeus, a line along the inner orbits of the eyes (extending to about three- 

 fourths of the length of the eye), the pronotum, tubercles, a larger spot behind them, 

 scutellum and postscutellum, two large ovate spots on the middle segment, the tegulae, 

 the tubercles and a mark behind them, and the edges of the abdominal segments, 

 yellow ; the base and sides of the petiole rufous. Wings clear hyaline ; the radial 

 cellule entirely, a spot at the apex of the subcostal cellule touching the costa, a small 

 cloud in the apex of the first cubital cellule, and the top of the second cubital cellule, 

 blackish ; stigma rufo-testaceous ; nervures blackish ; cubitus very faint beyond the 

 third cubital cellule. Tibiae spinose, the spines pale ; the fore tarsi with the brush 

 rather long. 



V 7. GrOryteS punctifrons. (Tab. V. figg. 13, head from in front; 13 a, antenna.) 



Niger, punctatus ; segmento mediali rugoso-punetato ; ore, orbitis oculorum, scapo subtus, margine pronoti, 

 tegulis, fascia scutelli, tibiis tarsisque anterioribus, marginibus abdominis segmentis, flavis ; alis hyalinis, 

 fascia substigmatali fusca. 5 . 



Long, fere 6 millim. 



Bab. Mexico, Presidio (Forrer). 



Antennae covered with a close pale pubescence ; the scape yellow ; the flagellum 

 brownish beneath ; the third joint about one quarter longer than the fourth ; the basal 

 joint a little longer than the third and fourth united ; the joints projecting beneath ; the 

 ninth with a blunt projecting point at the apex. Head sparsely covered with a fuscous 

 pile, the clypeus with silvery-white hair ; shining ; the front and vertex bearing rather 

 long widely-separated punctures ; a wide, but not very deep, furrow below the ocelli ; 

 there is a sharp keel above the antennae. Clypeus waved in the middle, the edges with 

 a thick tuft of hair ; palpi testaceous, blackish at the base. Eyes large, very slightly 

 converging beneath. The clypeus, the mandibles (except at the tips, which are fuscous), 

 and the inner orbits of the eyes to near the top, broadly yellow. Thorax clothed with 

 a short, close, pale pile, longest on the breast; bearing large, distinctly separated 

 punctures, which are larger on the middle segment; metapleurae shining, almost 

 impunctate, broadly hollowed ; base of the median segment in the middle longitudinally 

 striolated, the striolated part being margined and produced to a point in the centre ; 

 the edge of the pronotum, the tubercles, a larger mark behind, the tegulae and the 

 scutellum, clear yellow ; the centre of the posterior region of the middle segment is 

 hollow and keeled, the keel striolated on either side. Abdomen as long as, but 

 narrower than, the thorax, shining, punctured, the punctures becoming closer and 



