52 SYRPHICI. 



perboreus Stseger. Greenland. Stseger, Greenland's Antliater. 



interrogans Walk. North America. Walker, Dipt. Sannd. Ill, 238, 



laclirymosus Say (?not described in Say's works). Harris, Cat. Ins. 



Mass. 

 lapponicus Zett. Greenland. Zetterstedt, Ins. Lapponica. Stseger,, 



Grcenl. Antliater. 



latrans Walk. Huds. Bay. Walker, List, etc. Ill, 575 (Cheilosia). 



Lesueurii Macq. Philadelphia. Macq. Dipt. Exot. II, 2, 92, 10. 



Mem. de Lille, 1841, p. 152. 

 limbatus Fab. West Indies. Fab. Syst. Antl. p. 251, 10. Wied. 



Auss. Zweifl. II, 133, 30. 

 maculosus Meig. Europe (autores) ; Huds. Bay (Walk.). Meigen, 



etc. Walker, List, etc. Ill, 588. 

 marginatus Say. U. States (Say) ; Mass. (? Harris Cat.). Say, J. 



Acad. Phil. Ill, 92, 6 (Scaeva). Wied. Auss. Zweifl. II, 146, 52. 

 menthastri Lin. Europe (aut.); Nova Scotia, Huds. Bay, New York 



(Walk.). Linne, Fabricius, Meigen, etc. Walker, List, etc. Ill, 



593 (Sphaerophoria). 



mutuus Say. Mexico. Say, J. Acad. Phil. VI, 164, 2. 



Naso Walk. Huds. Bay. Walker, List, etc. Ill, 587. 



obliquus Say. U. States (Say); Mass. (Harris Cat.). Say, J. Acad, 



Phil. Ill, 89, 2 (Scaeva). Arner. Ent. I, tab. viii. Wied. Auss. 



Zweifl. II, 138, 39. 

 obscurus Say. Pennsylvania, Virginia (Say). Say, Amer. Ent. I, 



tab. xi. Wied. Auss. Zweifl. II, 131, 27. 



oestriformis Walk. Huds. Bay. Walker, List, etc. Ill, 573 (Chei- 

 losia) . 



Pacilus Walk. North America. Walker, Dipt. Saund. Ill, 240. 



philadeiphicus Macq. Philadelphia. Macq. Dipt. Exot. II, 2, 93, 



11. Mem. de Lille, 1841, p. 152, tab. xvi, fig. 2. 

 politus Say. Penna. Say, J. Acad. Phil. Ill, 88, 1 (Scaeva). Amer. 



Ent. I, tab. xi (Syrphus). Wied. Auss. Zweifl. II, 132, 28. 



profusus Walk. Georgia. Walker, List, etc. Ill, 578. 



pulchellus Macq. St. Domingo. Macq. Dipt. Exot. ler Suppl. p. 



138, 36. Mem. de Lille, 1844, p. 266, tab. xi, fig. 12. 

 quadratus Say. U. States, Massachusetts (Harris Cat.). Say, J. 



Acad. Phil. Ill, 90, 4 (Scaeva). Wied. Auss. Zweifl. II, 135, 32. 



Quintius Walk. North America. Walker, Dipt. Saund. Ill, 239. 



Radaca Walk. Florida. Walker, List, etc. Ill, 590. 



ribesii Fab. Europe (aut.); Nova Scotia, Huds. Bay (Walk.); Am. Bo- 

 real. (Kirby). Fabricius, Meigen, etc. Walker, List, etc. Ill, 581. 



scalaris Fab. Europe (aut.); Ohio, New York, Trenton Falls (Walk.). 



Fabricius, Meigen, etc. Walker, List, etc. Ill, 588. 



scriptus Lin. Europe (autores); Nova Scotia (Walk.). Linne, Fa- 

 bricius, Meigen, etc. Walker, List, etc. Ill, 592 (Sphaerophoria). 

 securiferus Macq. Am. Sept. Georgia. Macq. Dipt. Exot. II, 2, 100, 



22, and ler Suppl. p. 139. Mem. de Lille, 1841, p. 160, tab. xvi, 



fig. 1, and 1844, p. 267. 



