the mount desert regiox 445 



Megachilidae 



Andronictjs Cresson 



A. CYLiNDRicus Cress. Bar Harbor; S. W. Harbor, June 8- 



July 11. 

 A. PEODUCTUS Cress. Bar Harbor, June 7. 



Alcidamea Cresson 



A. PRODUCTA Cress. Bar Harbor, June 7. Nests in the pith 



of plants such as sumac. 

 A. TRUNCATA Cross. Bar Harbor, July 10-25. 



Caelioxys Latreille 



C. soDALis Cress. Bar Harbor, July 19-20. These live as 



social parasites in the nests of Megachile. 

 C. sp. Bar Harbor, July 10. 

 C. sp. Section 28, July 23. 



Heriades Spinola 



H. cARiNATus Cress. Eden, July 24. 



Megachile Latreille. The Leaf-cutting Bees 



M. iNFRAGiLis Cress. Common, July 12-Sept. 23. 



M. LATiMANus Say. Eden, Aug. 11, 1926. 



M. MENDicA Cress. Southwest Harbor, Sept. 6. 



M. MuciDA Cress. Common, June 21-July 26. 



M. RELATiVA Cress. S. W. Harbor; Echo Lake; Bar Harbor, 



June 27-Sept. 13. 

 M. VIDUA Smith. Bar Harbor; S. "W. Harbor; Echo Lake, 



June 7-July 20. 

 M. (Anthemois) inermis Prov. Indian Point on flowers, July 



28; S. end of Eagle Lake on Solidago, Aug. 16. Scarce. 

 M. (Delomegachile) melanophea Smith. Common on wild 



roses, etc., June 9-July 25. 

 M. (Litomegachile) brevis Say. Section 28, July 23. Not 



common. 



