DIPTERA. 171 



N. globosa var. albipes Bigot. 



Conn. — New Haven, May 26; Darien, June 12; Cheshire, July 8. 



Rhingia Scopoli. 



R. nasica Say. 



Me.— 1,4, 5, 6, 8, 9. N. H.— 11, 13, 14, 15. Vt.— 16, 17, 19, 21. 



June 9-July 25. 

 Mass.— 23, 25, 27, 28. R. L— 33. Conn.— 34, 35. May 22- 



Sept. 1. 



Hammerschmidtia Shummel. 



H. ferruginea Fallen. 



Me.— 5, 8. N. H.— 11, 14. Vt.— 21. June 9-July 3. 



Mass. — 23 (Great Barrington), 



Brachyopa MeigeH. 



B. perplexa Curran, 22-249. 



N. H.— 11, 14. June 9-July 15. 



Mass.— 26, 27. May 14. 



Common, and breeding in the fermenting sap oozing from 

 stumps and trees. 



B. notata Osten Sacken. 



Me.— 5. N. H.— 11, 14, 15. June 9-July 24. 



Mass.— 27 (Wellesley, A. P. Morse). May 13. 



B. flavescens Shannon, 15-144. 



N. H. — Bretton Woods, June 24; Glen House, June 14; Jaffrey, 



June 23. 

 Mass. — Mt. Greylock (summit), June 15. 



B. vacua Osten Sacken. 



Mass. — Cohasset, June 5, 1904 (Bryant) ; North Saugus. 



B. diversa Johnson, 17-361. 



Me.— Bar Harbor, June 8, 1921. N. K.— Jaffrey, June 18, 1917. 



Volucella Geoflfroy. 



V. bombylans var. lateralis Johnson, 16-162. 

 Me.— 5, 8, 9. N. H.— 11. June 7-July 8. 



V. bombylans var. evecta Walker. 



N.H.— 11. 



Mass.— 23, 26, 27. Conn.— 34. June 14- July 25. 



V. bombylans var. americana Johnson, 16-162. 



Me.— 9, 10. N. H.— 12. June 29-Julv 24. 



Mass.— 23, 24, 25, 27. Conn.— 34. June 15-July 14. 



The larvae of this species of Volucella live, in both Europe 

 and North America, in the nests of the various species of bum- 

 ble-bees (Bomhus). The American forms are not specifically 

 distinct from the European V. bombylans Linne. 



