286 THE CANADIAN ENTOMOLOGIST. 



5. Third antennal joint almost as long as fourth ; no yellow at corners of 



face ; side^s of abdomen with suffused black marks. (April). Clarkii. 



Third antennal joint distinctly shorter than the fourth \ no yellow at 



corners of face ; sides of abdomen without black .... Kincaidiana. 



6. Base of abdomen with a black mark in middle, or with black right 



across. 



Third antennal joint not much shorter than fourth. (May, 



June) Oregonica. 



Third antennal joint distinctly shorter than the {owxih. Hoodta?ia. 



Base of abdomen without a black mark in the middle ; third antennal 



joint much shorter than the fourth. (May, June) ultima. 



7. Yellow at lower corners of face. 



Third antennal joint not more than one-half the length of the 

 fourth; sides of abdomen inclined to be black spotted. (May, 



June) Astori. 



Third antennal joint nearly as long as fourth ; sides of abdomen 



not at all black spotted . Fowleri. 



No yellow at lower corners of face. 



Third antennal joint at least as long as fourth ; abdomen dark red, 



its sides without black marks. (May) . . Corvallisensis. 



Third joint distinctly shorter than fourth, but more than half as 



long erythrochroa. 



Nomada nigrocincta, Sm., new spec. — Hym. Brit. Mus., 99, (^ . 

 Corvallis, Or., 3rd June, 1899. (Cordley.) 



Nomada Cressoni Trevoriana, Ckll.. n. subsp. 



No subdiscal cuneate spot on fourth abdominal segment. 



Olympia, Wash., 22nd April, 1894. (T. Kincaid.) 



Nomada Lewisii, Ckll. — Ann. & Mag., N. H., XII, 205, 1903. 



Corvallis, Or., 7th May, 5th June. (Cordley.) 



Nomada gibbosa, Vier., n. sp 



Type Acad. Nat. Sci., Phila, Type locality, Oregon. 



Received through the courtesy of Mr. J. H. Lovell. 



Nomada vicinalis infrarubens, Ckll. — Bull. 94, Colo. Expt. Sta., 

 p. S4. 



Labrum very hairy ; ends of linear upward prolongation of lateral 

 face-marks slightly bending from orbits ; flagellum bright red, the last 

 joint pointed, the first five joints black above ; hair of upper part of 

 thorax (especially scutellum) strongly brownish ; tubercles reddish, with a 



