HYMENOPTERA I97 



Genus Lissonota Gravenhorst. 

 LISSONOTA ALASKENSIS sp. nov. 



Fe?nale. — Length 7.5 mm. Black, coriaceous; apex of second 

 dorsal abdominal segment, base of third, and the legs, except coxae, 

 basal joint of trochanters and the hind tarsi, red. Wings hyaline, the 

 stigma and veins brown, the areolet oblique, petiolate, the disco-cubital 

 nervure curved but show^ing a faint trace of a stump of a vein at its 

 basal third (so small as to be easily overlooked), the submedian cell a 

 little longer than the median, while the transverse median nervure in 

 the hind wings is not quite straight, very obtusely angularly broken a 

 little below the middle. 



Type. — Cat. No. 5614, U. S. Nat. Museum. From St. Paul Island 

 (Fur Seal Commission). One specimen. 



LISSONOTA RUFICOXIS Schmiedeknecht. 



Lissonota sulferifera Gravenhorst, var. ruficoxis Schmiedeknecht, Zool. 

 Jahrb. Jena, xiii, p. 360, 1900. 



Kukak Bay, July 4. One female specimen. 



The single specimen taken, so far as the description goes, agrees per- 

 fectly, in size and color, with the brief description of this European 

 species as given by Dr. Schmiedeknecht, who defined it as a varieiy 

 of the European species Lissonotiis sulferifera Gravenhorst. I have 

 no European specimens of this variety for comparison, but if our speci- 

 men is identical with Schmiedeknecht's then I cannot agree with him 

 in considering it a variety of L. sulferifera.^ since in comparison with 

 European specimens of this species, besides a difference in the color 

 of the legs, I find a difference in venation, and it should be considered 

 a distinct species. The venation of the front wings is exactly as in 

 L. rifnaior Thomson, and it is much closer related to that species than 

 to L. sulferifera. 



* Genus Pimplopterus Ashmead. 



PIMPLOPTERUS YAKUTATENSIS sp. nov. 



Female. — Length 6 mm. Black opaque, coriaceous , clypeus yel- 

 lowish and distinctly separated from the face ; legs, except the coxae, 

 basal joint of trochanters and hind tibiae and tarsi red. Wings hyaline, 

 the stigma and veins brown, the areolet oblique but sessile, receiving 

 the second recurrent nervure beyond the middle, the submedian cell 



Proc. Wash. Acad. Sci., May, 1902. 



