1914 ENTOMOLOGICAL SOCIETY. 125 



* Sphecodes hudsoni Ckll. Hudson Bay; Can. Ent. Vol. XLV, 13. 

 Halictus lerouxii Lep. Ottawa, May, July, Aug., (Sladen). 

 Halictus coriaceus Sm. Ottawa, June, Aug., (Sladen). 

 Halictus truncatus Eo'bt. Ottawa, April, Aug., (Sladen). 

 Halictus provancheri D. T. Ottawa, May, July, Aug., (Sladen). 

 Halictus pilosus Sm. Ottawa, Aug., Sept., (Sladen). 

 Halictus lineatulus Crawf. Ottawa, Sept., (Sladen). 

 Halictus zephyrus Sm. Ottawa, May, Sept., (Sladen). 

 Andrena vicina Sm. Ottawa, May, (Sladen). 

 Andrena radiatula Ckll. Ottawa, April 23, (Sladen). 

 Andrena cocherelli Grsn. Ottawa, April, 1911, (Beaulne). 

 Andrena cratwgi Eobt. Ottawa, June 2, (Sladen). 

 Andrena hippotes Eobt. May 28, 1911, (Beaulne). 

 Andrena illinoiensis Eobt. Ottawa, April 21, (Sladen). 

 Andrena flavoclypeata Sm. Ottawa, June 23, (Sladen). 

 Andrena thraspii Graen. Ottawa, June 26, (Sladen). 

 Andrena robertsonii D. T. Ottawa, June 23, (Sladen). 

 Andrena nubecula Sm. Ottawa, Aug. 13, (Sladen). 

 Andrena nivalis Sm. Ottawa, June 18, (Sladen). 

 Andrena hirticincta Prov. Ottawa, AxLg. 13', (Sladen). 

 Andrena canadensis D.T. Ottawa, Aug. 12, (Sladen). 

 Perdita octomaculaia Sav. Ottawa, Aug. 15, 1912, (Beaulne). 

 Calliovsis andreniformis Sm. Ottawa, June to Oct., (Sladen). 

 Melissodes aurigenia Cr. Thompson Eiver, B.C., August 13, on "wild sun- 

 flower" (Tom Wilson); Ottawa, July 15 to Aug. 8, on RudbecUa and 

 Coreopsis; Guelph, Ont., Aug. 27, (Sladen). 

 Melissodes obliqua Say. Chatham, Ont., Aug. 22, (Sladen). 

 Melissodes cnici Eobt. Ottawa, July 11 to Aug. 8, on Canada Thistle, 



(Sladen). 

 Ceratina dupla Say. Ottawa, June to Sept., (Sladen). 

 Xylocopa virginica Dru. St. Catharines, Ont., June 3, (G. J. Spencer). 

 Megachile wootoni Ckll. Ottawa, June, 1912, (Beaulne) ; June, July, 



(Sladen). 

 Megachile lativianus, Say. Ottawa, July, Aug., (Sladen). 

 Megachile pugnata Say. Ottawa, Aug. 20, 1912, (Beaulne) ; June-August, 



(Sladen). 

 Megachile infragilis Cr. Ottawa, June to Sept., (Sladen). 

 Megachile vidua Sm. Hull, Que., Aug. 31, (Hewitt) ; Montreal, Que., (A. 



Willey). 

 Megachile generosa Cr. Ottawa, June- Aug., (Sladen). 

 Megachile brevis Say. Ottawa, June- Aug., (Sladen). 

 Cadioxys ribis Ckll. Ottawa, July, (Sladen). 

 Coelioxys alternata Say. Ottawa, July, (Sladen). 

 Coelioxys lucrosa Cr. Ottawa, June 14, (Sladen) ; Montreal, Que., (A. 



Willey). 

 Coelioxys octodentata Say. Ottawa, June 27, (Sladen). 

 Coelioxys rufitarsus Sm. Ottawa, July-Oct., (Sladen). 

 Osmia atriventris^Cv. Ottawa, April 25 to June 5, (Sladen). 

 Osmia canadensis Cr. Ottawa, May 4 to June 5, (Sladen). 

 Heriades carinatus Cr. Ottawa, June 28 to July 31, (Sladen). 



