158 BIOLOGICAL SURVEY OF 



CuPHOPTERUS Morawitz 



C. MACULiPENNis Smith. Echo Lake; N. E. Harbor, July 12- 



Aug. 10. 



Apoidea 



Halictidae 



Halictus Latreille 



H. LEROuxi Le Pel. Common, July 6-Sept. 6. 



H. provancheri D. T. Bar Harbor; S. W. Harbor, Aug. 15. 



Subgenus Evylaeus Eobertson 



H. ARCUATus Robts. Bar Harbor; 'Narrows,' July 18- Aug. 14. 



H. Foxii Robts, Bar Harbor, June 7-13. 



H. QUADRiMACULATus Robts. S. W. Harbor, July 13. 



H. TRUNCATUs Robts. S. W. Harbor, Sept. 6. 



Subgenus Lasioglossum Curtis 



H. coriaceus Smith. Common, June 22-Sept. 7. 

 H. siMiLis Smith. Common, July 6-Aug. 17. 



Subgenus Chlorolictus Eobertson 



H. cREssoNi Robts. Bar Harbor; Green Mt. ; Echo Lake, 



June 11-July 25. 

 H. NYMPHAEARUM Robts. Narrows, Aug. 13. 

 H. VERSATus Robts. Bar Harbor ; Long Pond ; Narrows, June 



15-Aug. 21. 

 H. ZEPHYRUs Smith. S. W. Harbor; Echo Lake, July 10-17. 



Andrenidae 



Andrena Fabricius 



A. cocKERELLi Graeii. Bar Harbor ; Salisbury Cove, June 7-9. 

 A. HiRTiciNCTA Prov. S. W. Harbor, Aug. 23. On flowers of 



goldenrod. 

 A. LATA Vier. Bar Harbor, June 8, 1921. Type locality. 

 A. MiLWAUKENsis Gracu. Bar Harbor; Echo Lake, June 8- 



July 12. Stylopized. 

 A. NUBECULA Smith. Bar Harbor, Sept. 9-11. 

 A. THASPii Graen, Echo Lake; N. E. Harbor (Minot), June 



18-July 8. Stylopized. 



