492 HYMENOPTERA OF AMERICA NORTH OF MEXICO 



mum, Rhus, and Verbena. Hosts: ? Megachile (M.) centuncularis 

 (L.) and Chalicodoma (Chelostomoides) campanulae wilmingtoni 

 (Mitch,). 



moesta Cresson. N. S. to Alaska, south to Va., Ind., Colo. On flowers of 

 Solidago. Hosts: Megachile (M.) centuncularis (L.) and M. (M.) 

 relativa Cr. Transfer tristis Provancher to syn. of sodalis Cres- 

 son. 

 Coelloxys banksi Crawford (syn. by Mitchell, 1962, loc. cit. supra, p. 

 213). 



novomexicana Cockerell. Host: Megachile gentilis Cr. 



octodentata Say. New England States and Que. to B. C, south to Fla. in the 

 East, and to Calif, in West. Visits many flowers, particularly of 

 Compositae and Leguminosae. Hosts: Megachile (M.) centuncu- 

 laris (L.), M. (Litomegachile) b. brevis Say and M. (L.) mendica 

 Cr. 



pierce! Crawford. N. C. to Fla., west to Tex. On flowers of Oenothera. 

 Host: 1 Megachile (Megachiloides) oenotlierae ('Mitch.). 



porterae Cockerell. N. S. to N. C, west to Alta. and Wis. On flowers of 

 Baptisia, Coreopsis, Galax, Geranium, Houstonia, Hydrangea, Po- 

 lygala, Pyncnanthemum, Rubus, and Vaccinimn. Host: Megachile 

 (M.) relativa Cr. 



ribis Cockerell. Syn. of sodalis Cresson. 



rufitarsis rufitarsis Smith. N. S. south to Ga., west to B. C. and Calif. On 

 flowers of Asclepias, Aster, Baptisia, Blephilia, Helianthus, Lobe- 

 lia, Melilotus, Monarda, Petalostemum, Rudbeckia, Solidago, Spi- 

 raea, Verbesina, and Vicia. Hosts: Megachile (Delomegachile) 

 melanophaea Sm., M. (Xanthosarus) latimanus Say and M. (X.) 

 perihirta Ckll. 

 Coelioxys dubitata Smith (syn. by Mitchell, 1962, loc. cit. supra, p. 229). 



salinaria Cockerell. Host: Megachile (Litomegachile) brevis Say. 



sayi Robertson. Ont. south to Fla. and Tex., west to B. C. Visits many 

 flowers, specially Compositae and Leguminosae. Host: Megachile 

 (Litomegachile) mendica Cr. 

 Coelioxys mendacina Cockerell (syn. by Mitchell, 1962, loc. cit. supra, 

 p. 222). 



sculptifrons Crawford. Syn. of immaculata Cockerell. 



slossoni arenicola Crawford. Tex. to Ga. and N. C. On flowers of Helianthus, 

 Phaseolus, and Strophostyles. 



slossoni slossoni Viereck. On flowers of Bidens. 



sodalis Cresson. N. S. to N. W. T. and B. C, south to N. Y. and Wis. On 

 flowers of Rhodora and Rubus. Host: Megachile (Delomegachile) 

 melanophaea wootoni Ckll. 



Coelioxys tristis Provancher. Transf. from syn. of moesta Cresson (teste 

 Mitchell, 1962, loc. cit. supra, p. 226). 



Coelioxys ribis Cockerell (syn. by Mitchell, 1962, loc. cit. supra, p. 226). 



texana texana Cresson. Fla. and Minn, to Tex., Ariz.; Mexico. On a number 

 of flowers, predominantly Compositae and Leguminosae. 



wisconsinensis Cockerell. A subsp. of alternata Say. 



Family APIDAE 



Mitchell (1962. N. C. Agr. Expt. Sta. Tech. Bull. 152) raises the three 

 subfamilies of the Catalog (Anthophorinae, Xylocopinae, and Apinae) to 

 family rank. 



