211 THK CANADIAN ENT«1MOI.OOIBT. 



entire insect shining, impunctate ; sheath straight above, obliquely trun- 

 cate, and then tapering to the broadened base ; stigma rounded on the 

 lower margin, broadest a little basad of middle ; transverse radius obhque 

 and received at the apical third of the cell ; upper discal cell slightljr 

 exceeding the lower on the outer margin. Entirely reddish -yellow, the 

 antennae above a little darker. Wings creamy hyaline, iridescent ; vena- 

 tion pallid-hyaline. 



Male : Length, 4-4.5 "^'"- Hypopygidiiim much longer than wide, 

 truncate at the apex. Agrees with the above description of the female. 



Type locality : Mt. Hood, Oregon. Collector unknown. 



Type: No. 12841. U. S. N. M. 

 Jloplocatnpa (Macgillivrayella) xanthura, n. sp. 



Male : 4.75 mm. Very like Oregonensis, but the following differences 

 are to be noted : Antennae somewhat longer, cmarginalion of the clypeus 

 shallower, middle fovea smaller and almost wanting, a depressed area in 

 front of the anterior ocellus, the sculellum with some small punctures, 

 transverse radius short, perpendicular and received near the middle of the 

 cell, parallel with the third transverse cubitus, tergum mostly black, vena- 

 tion, except the stigma, j)alc brown, stigma narrower and gently rounded 

 beneath, hypopygidium with the lateral angles more strongly rounded and 

 a narrow notch in the middle. 



Type locality : Montana. Collector unknown. 



Type: No. 12842. U. S. N. M. 



Hoplocampa (Macgillivrayella) /acteipennis, n. sp. 



Female : Length, 4.5 mm. Clypeus very shallowly emarginate ; 

 supraclypeal line distinct, well defined ; antennal foveae not as large as in 

 Oregonensis ; antennal furrows complete to the ocelli ; middle fovea 

 elongate and connected with the ocellar furrow ; posiocellar furrow present, 

 but not well defined ; antennae a little lunger than in Oregonensis ; meso- 

 nolum with a few scattered, small punctures ; end of the abdomen mashed 

 so the characters of the sheath cannot be made out ; stigma broad, as in 

 Oregonensis ; transverse radius nearly perpendicular and received in about 

 the middle of the third cubital cell; upper discal cell of the hind wings 

 slightly exceeding the lower on the outer margin. Reddish yellow with a 

 brownish tint ; wings milky-hyaline, veins pallid-hyalinc. 



Type locality : .Mass, Collector unknown. 



Type: No. 12S43. r. S. N. M. 



[Note, — The subgenus Hoplocampa will be treated in the next paper 

 of this series. 



