DIPTERA. 197 



Subgenus Parexorisla Brauer and Bergenstamm. 



Z. affinis (Fallen) {Exorista affinis of authors). 

 Me.— i, 5, 8, 9. N. H.— 11, 15. June 16-Sept. 22. 

 Mass.— 24, 26, 27, 28. July 16-Aug. 1. 



Z. cheloniae Rondani {Exorista cheloniae of authors). 



N. H. — Franconia {Mrs. Slosson). 



Mass.— Melrose Highlands, May 17-22; Coffin's Beach, May 30. 



Conn. — Portland {Zappe). 



Bred from the American Tent Caterpillar, etc. 



Z. confinis (Fallen) {Exorista confinis of authors). 

 Me.— 4, 6, 8. N. H.— 11, 14, 15. Vt.— 21. June 18- Aug. 20. 

 Mass.— 24, 26, 27, 28, 29, 32. R. I.— 33. Conn.— 35. June 9- 

 Sept. 6. 



Z. fronto Coquillett. 



N. H. — Mt. Washington {Mrs. Slosson). 



Subgenus Etisisyropa Townsend, 08-97. 



Z. blanda blanda Osten Sacken {Exorista boarmiae Coquillett). 

 Me.— 8. N. H.— 11, 13, 14, 15. July 8-Aug. 16. 

 Mass.— 25, 26, 27, 29. R. I.— 33. June 14-Aug. 28. 

 Parasitic on Vanassa cardui, Thanaos brizo, etc. 



Z. blanda virilis Aldrich and Webber, 24-40. 



Mass. — Gipsy Moth Laboratory (Melrose Highlands). 



Z. blandita (Coquillett) {Exorista blandita Coquillett), 

 N. H. — Franconia {Mrs. Slosson). 



Mass. — North Saugus, Aug. 1; Auburndale, Aug. 28. R. I. — 

 Buttonwoods, June 22. 



Z. futilis (Osten Sacken) {Exorista futilis Osten Sacken; Euex- 



orista futilis Townsend, 12-166). 

 Me.— 9. N. H.— 14, 15. Vt.— 18. June 27-Sept. 10. 

 Mass.— 23, 24, 25, 27, 32. R. I.— 33. Conn.— 35. June 5- 



Oct. 21. 



Parasitic on Vanassa atalanta, etc, 



Phorocera R.-Desvoidy. 

 Subgenus Phorocera R.-Desvoidy. 



P. slossonae Townsend, 08-108 {Enphorocera cinerea Coquillett, 



1897, not Van der Wulp, 1890). 

 N. H. — Franconia {Mrs. Slosson). 

 Mass. — Norwood, Apr. 3 {Reiff); Duxburj^, Aug. 12 {Preston). 



Conn. — Lyme, Apr. 3 {Champlain). 



