86 MELANOSTOMA 



(1822); MACQ., Recueil Soc. Sci. Agricult. Lille, 1828. 236. 

 18. [Syrphus] (1829) ot Suit, a Buffon, I. 544. 34. [Syrphus] 

 (1834); WALK., List Dipt. Brit. Mus., III. 588. [Syrphus, 

 Scaeva] (1849) ; SCHIN., Verb, zool.-bot. Ver. Wien, VII. 356. 

 77. [Syrphus] (1857). 



scalare PANZ. (nee FABR.) = mellinum L. 



stegnum SAY, Journ. Acad. Nat. Sci. Pliilad., VI. 163. 1. [Syrphus] America. 

 (1829) et Compl. Writ., II. 358. 1. [Syrphus] (1859) ; WILLIST., 

 Biolog. Central. Amer., Dipt., III. 10. 1. (1891) ; SNOW, Kansas 

 Univ. Quart., I. 35. (1892) ; WILLIST., Entomol. News Pliilad., III. 

 145. (1892) ; GiGL.-Tos, Mem. R. Accad. Sci. Nat. Torino, ser. 

 2. XLIII. 354. 91. (1893); SNOW, Kansas Univ. Quart., III. 229. 

 (1895); TOWNS., Psyche, VIII. No. 260., 148. 4. (1897); OSBURN, 

 Canad. Entomol., XXXVI. 217. 11. (1904) ; ALDR., Catal. North 

 Amer. Dipt., 361. (1905). 



fenestratum MACQ., Dipt, exot., II. 2., 103. 27. tab. XVII. fig. 

 6. [Syrphus] (1842) ; BLANCH, in GAY : Hist. fls. y polit. de 

 Chile, Zool.,VII. 413. 9. [Syrphus] (1852); PHIL., Verh. zool.- 

 bot. Ges. Wien, XV. 746. 9. [Syrphus] (1SQ5); SCHIN., Novara 

 Reise, Dipt., 351. 31. (1868); WILLIST., Trans. Amer. Entom. 

 Soc.Philad., XIII. 311. (1886); BIG., Miss. Sclent. Cap Horn, 

 VI. Zool., 26. 38. [Syrphus] (1888) ; WILLIST., Biolog. Central. 

 Amer., Dipt, III. 10. 2. (1891); F. L. ARRTB., Anal. Soc. Cient. 

 Argent., XXXII. 309. 1. (1891) et XXXIV. 259. 1. (1892); 

 ALDR., Catal. North Amer. Dipt., 360. (1905). 

 punctulatwn v. D. WULP, Tijdschr. v. Entomol., XXXI. 375. 15. 

 (1888) ; F. L. ARRIB., Anal. Soc. Cient. Argent, XXXII. 310. 

 2. (1891). 



?rostratum BIG., Annal. Soc. Entom. France, ser. 6. IV. 80. 9. 

 (1884); WILLIST., Bullet Unit. Stat. Nat. Mus., No. 31., 53. 

 (1886). 



tigrinum OST.-SACK., Bullet. Unit. Stat. Geolog. Surv., III. 323. 

 (1877) ; WILLIST., Proc. Amer. Philos. Soc., XX. 310. (1882) 

 et Bullet. Unit. Stat. Nat. Mus., No. 31., 47. (1886). 

 trichopus THOMS., Eugenies Resa, Dipt., 502. 97. [Syrphus] 

 (1869); WILLIST., Bullet. Unit. Stat Nat. Mus., No. 31., 51. 

 (1886) ; COQUILL., Proc. Washington Acad. Sci., II. 428. (1900) 

 et in HARRIMAN : Alaska Exped., IX. Pt. II., 42. (1904). 

 tigrinum OST.-SACK. stegnum SAY. 



transfugum ZETT., Insecta Lapponica, Dipt., 607. 37. [Scaeva] (1838), Europa sept. 

 Dipt Scand., II. 756. 59. [Scaeva] (1843) et VIII. 3153. 59. [Scaeva] 

 (1849) ; SCHIN., Verh. zool.-bot. Ver. Wien, VII. 353. 62. (1857) ; 

 BONSD., Finlands tvaving. Ins., I. 254. 56. [Scaeva] (1861). 

 trichopus THOMS. = stegnum SAY. 

 unicolor MACQ. mellinum L. 

 unicolor ROND. = ? dubium ZETT. 



