THE CANADIAN ENTOMOLOGIST 271 



Toronto, Ottawa, 6, VI. 

 Antenna? simple, ventral segments 1 and 2 with median apical 

 spine, coat somewhat long. 



Momimetha Cr., 2047, argentifrons Cr. ( — albifrons Kirby). 

 Ontario to British Columbia, Ottawa, 6, VI. 



13. Pollen brush black 14. 



Pollen brush white 15 . 



14. Brilliant metallic green Chlorosmia, 205Q,fulgida Cr. 



British Columbia. 

 Skin entirely black, abdomen black-haired, with lateral apical 

 hair patch on segment 1, narrowing on the following segments 



Momimetha, 2048, argentifrons Cr. ( =borealis Cr.). 



Ontario to British Columbia, Ottawa, VI. 



15. Mandibles very large, head wider than thorax, upper part of 



clypeus with longitudinal median impression, lower part 

 with large upstanding tooth, a low longitudinal carina be- 

 tween antenna?, first recurrent and first transverse cubital 

 nervures interstitial, labrum long and sheathlike, much longer 

 ' than wide, maxillary palpi three-jointed, labial palpi four- 

 jointed, the 3rd and 4th joints not divergent, 4th as w' ie as 

 long, wider than 3rd, 3rd joint pale, 4th dark; insect scantily 

 clothed with whitish hair, which forms narrow apical fringes 

 on segments 2 to 4, and on sides of segment 1, length 8 to 9 

 mm Formicapis n.g., 2055, dypeata n.sp. 



Aweme. Man., 6, VII.— One specimen, N. Criddle, 1915. 



Waterhole, Alta., 18, VIII. — One specimen, E. H. Strickland, 

 1915. 



Head no wider than thorax, clypeus normal 16. 



16. Larger, length 10 to 12 mm., clypeus not more coarsely punc- 



tured than vertex, length of cubital nervure between first 

 transverse cubital and first discoidal much longer than half 

 that of the first transverse cubital nervure, pollen brush 

 yellowish, mandibles 4-dentate. 



Andronicus, 2054, cylindricus Cr. 



Nova Scotia to Manitoba, VI, VII. 

 Smaller, length 7 to 8 mm., clypeus more coarsely punctured 

 than vertex, cubital nervure between first transverse cubital 



