Bepooi iqion Aculeate Hymenoptera. 283 



5. Body black. 



Plate of first segment sparsely punctate, with a median crenate 

 furrow posteriorly, the second segment smooth, less than half 

 the length of the third, with oblique lines laterally ; ovipositor 

 as long as the abdomen ; two basal joints of antennae, the 

 tegula), the legs and ventral segments 1 and 2 and membranous 

 margins of dorsal segments 1 and 2 pale yellowish-white. 

 (8) U. leucopus, n. sp. 



Plate of first segment smooth, polished, impunctate, with a median 

 grooved line posteriorly, the second segment about half as long 

 as the third, with oblique, lateral, grooved lines ; ovipositor not 

 much longer than half the length of the abdomen ; basal joint 

 of antennae, the tegulaj, the legs, ventral segments 1 to 4 and 

 membranous margins of dorsal segments 1 to 4 brownish-yellow 

 the yellow of the third dorsal segment extending inwardly on 



to the disk of the segment {^) U. xcmthopus, n. sp. 



Thorax, abdomen and legs honey-yellow ; head, except face, black. 



Plate of first segment feebly sculptured, the second segment smooth, 

 a little shorter than the hind ; ovipositor hardly much longer 

 than half the lengtli of the abdomen. (10) U. imitator, n. sp. 



6. All coxa3 pale, or at most with the hind coxae dusky at base 



only 9 



Hind coxfc alone black 8 



All coxae black. 



Trochanters pale, except sometimes the first joint of the pos- 

 terior 7 



Trochanters, or at least the first joint, black or fuscous. 

 Plate of first abdominal segment polished, not sculptured, or at most 

 feebly alutaceous, with a few sparse punctures ; second segment 

 very short, about one-third the length of third, with two oblique 

 furrows, one on each side ; legs brownish-yellow, the middle and 

 hind femora black or embrowned, the tips of hind tibiae and 

 their tarsi, fuscous or subfuscous ; stigma and veins whitish or 

 hyaline ; ovipositor the length of the a'ldomen, or only about 

 half its length (11) ZJ. leucostigmus, n. sp. 



7. Plate of first segment polished, impunctate, the second segment 



very short, with oblique furrows at sides ; legs brownish-yellow, 

 the middle and hind femora, tip of tibia; and their tarsi more or 



less embrowned or fuscous (12) U. hijalinus, n. sp. 



Plate of first abdominal segment finely sculptured, the second 

 two-thirds the length of the third, aciculated and with two 

 oblique, grooved lines ; legs ferruginous, the hind knees, tips of 

 liind tibiae and their tarsi fuscous ; stigma, costac and the branch 

 of the radius brown. 9 (i;5) U. acici(latvs,r\.ST^. 



