HYMENOPTERA 1 69 



EXOLYTUS RUBROCINCTUS sp. nov. 



Male. — Length 6.5 mm. Polished black ; palpi yellowish ; the 

 third dorsal abdominal segment, except sometimes at apex, ventral 

 segments 2 and 3 and the legs, except coxae, basal joint of trochanters, 

 more or less of femora and the hind tarsi which are black, are red or 

 rufo-testaceous. Antennae 26-jointed. Wings hyaline, the stigma and 

 veins brown, the epitegulae and the svibcostal vein pale yellowish, the 

 areolet open. 



Type. — Cat. No. 5571, U. S. Nat. Museum. From Popof Island, 

 July 8. Two specimens. 



EXOLYTUS UNGENSIS sp. nov. 



JPevtale. — Length 5 mm. Black ; the tegulce and legs pale ferru- 

 ginous, the front and middle coxte and trochanters yellowish ; abdo- 

 men with the venter at apex and dorsal segments 2 and 3, except the 

 former narrowly at base and the latter at apex, red. Antennce? 

 broken. Wings hyaline, the stigma and veins brown, the epiteguljE, 

 subcostal, median and submedian veins pale yellowish. Abdomen 

 smooth and polished, the petiole with a few irregular, longitudinal 

 wrinkles, but not distinctly striated. 



Type. — Cat. No. 5573, U. S. Nat. Museum. From Unga, July 

 21. One specimen. 



Genus Atractodes Gravenhorst. 



ATRACTODES YAKUTATENSIS sp. nov. 



Male. — Length 3.5 mm. Black, coriaceously opaque ; mandibles, 

 sutures of trochanters and knees rufo-testaceous ; tegulas and tibial 

 spurs pale yellowish. Wings hyaline, the stigma and veins brown, 

 the areolet open behind. 



The head is transverse, at least thrice as wide as thick antero-pos- 

 teriorly, the temples only about half the width of the eyes, the eyes 

 being large, oval. The mctathorax is long, areolated, the areola com- 

 plete, hexagonal. The abdomen is scarcely the length of the thorax, 

 finely coriaceous, the petiole striate, a little longer than the second 

 segment. 



Type. — Cat. No. 5574, U. S. Nat. Museum. From Yakutat, June 

 21. One specimen. 



