THE CANADIAN ENTOMOLOC.IST 205 



THE PANURGINE BEES OE NORTH DAKOTA AND 

 A NE:W EPEOLUS. (HYM.) 



JJV (>. A. STK\KNS, AGRICULTURAL C:OLLEGIi, N. DAK. 



Since 1910 the writer has spent as much time as other duties would permit 

 collecting and studying the flower-visiti/ig insects, chiefly bees, of this state. 

 A list of the wasps had been published (Ent. News, Vol; 28, pp. 419-423, 1917) 

 Records of some of the bees have been published as follows: 



C^ockerell— Can. Ent. Vol. 43, p. 390, 1911. —Neopasites {Holcopasites) 



robertsoni Cwfd. and Andrena hirticincta Prov. 

 Crawford— Can. Ent., Vol. 45, pp. 155-156, 1913. — Prosopis stevensi, n. sp. 

 — Proc. U. S. Mus., Vol. 48, p. 579, 1915. — species of Panur^inus. 

 — Insec. Ins. Menst.. Vol. 3, pp. 125-126, 1915.— Holcopasites 

 stevensi, n. sp. 

 Franklin —Ent. News, Vol. 26, pp. 413-415, 1915.— species of BombidcB. 

 Swenk — Univ. Nebr. Studies, Vol. 12, No. 1, 1912.— species of Nomada 

 (3 new). 

 — Ibid., Vol. 15, No. 2, 1915. — ^species of Nomadidce (8 new) and 

 Stelididce. 

 The present paper presents records of the Pannrgidce of Ashmead, and also 

 a new Epeoliis. Prof. Cockerell has kindly suggested that these described 

 species were new and has looked over the descriptions. The types will be 

 placed in the U. S. National Museum. 



Family Macroptd^. 

 - Macropis morsei Robertson, (det. Crawford). 



Fargo, Kensal, New Rockford, Deering, Kenmare, Pleasant Lake and 

 Granville. Mostly at flowers of Steironema; at one time many of both sexes 

 were found sucking nectar at Lactiica pulchella (which was growing near a 

 quantity' of Steironema). Occasional specimens at Apocymim androscemifolium 

 and A. hypericifolium (males), Petalostemon oligophyllum, Onagra strigosa, 

 Solidago canadensis, Symphoricarpos occidentalis and Taraxacum taraxacum; 

 June 26 to Aug. 11. 



Family Dufoureid^. 

 Halictoides marginatus (Cresson). (det. Crawford). 

 Fargo, Valley City, Lakota, Rugby, Monango (J. F. Brenckle). Mott 

 (J. R. Campbell), Dickinson (C. H. Waldron). A rather common bee, mostly 

 at sunflowers {Heliunthus petiolaris, H. scaberrimus and H. tuberosus), also at 

 Grindelia squarrosa; Aug. 9 to Sept. 18. 



Halictoides maurus (Cresson). (det. Crawford). 

 Cavalier, Valley City, Mandan, Glen Ullin, Leeds, Minot, Marmarth. A 

 fairly common bee at flowers of Campanula rotundifolia; June 30 to Aug. 5. 



Family Panurgid^. 

 Perdita canadensis Crawford (det. Crawford). 

 Sheldon, Pleasant Lake. W'illiston and Dickinson (C. H. Waldron). At 

 flowers of Helianthus petiolaris and H. scaberrimus; July 25 to Aug. 21. Some 

 twenty of each sex and several pairs taken in copula. The male has not been 

 described. The more strongly marked ones agree quite closely with the de- 

 scription of that sex of P. lacfeipennis Swenk and Cockerell. In others the yel- 

 low markings are almost entirely absent. The mandibles are usually yellowish- 

 August. 1919 



