Syrphidae of Nebraska 47 



Helophilus conostomus Williston. Synop. N. A. Syrph., 193 (1886). 



Two 9 5 taken at South Sioux City, Dakota County, and 

 West Point, Cuming County, in June and July. 



Helophilus similis Macquart. Dipt. Exot., ii, 2, 64 (1842); Williston, 

 Synop. N. A. Syrph., 189 (1886). 



Five s s and six 9 9 collected at Lincoln, Lancaster 

 County; Cedar Bluffs, Saunders County, and Hardy, Nuckolls 

 County, in April and August. 



Helophilus latifrons Loew. Cent., iv, 73 (1863); Williston, Synop. 

 N. A. Syi-ph.. 188 (1886) ; Hunter, Canad. Ent, xxix, 138 (1897). 



Thirty-six $ s and thirty-nine 9 9 taken at Omaha, Doug- 

 las County ; Louisville, Cass County ; South Bend, Cass County ; 

 Wabash, Cass County; Lincoln, Lancaster County; Cedar 

 Bluffs, Saunders County; Ashland, Saunders County; Hardy, 

 Nuckolls County; West Point, Cuming County; Neligh, Ante- 

 lope County; Niobrara, Knox County; Concord, Dixon County; 

 Cams, Keyapaha County ; Halsey, Thomas County ; Valentine, 

 Cherry County; Haigler, Dundy County; Bridgeport, Morrill 

 County; Mitchell, Scottsbluff County; Gering, Scottsbluff 

 County; Gordon, Sheridan County; Crawford, Dawson 

 County; Glen, Sioux County, and Bad Lands, mouth of Mon- 

 roe Canyon, Sioux County, between May 8th and October 6th. 



Helophilus chrysostomus (Wiedemann). Auss. Zweifl. Ins., ii, 174 

 (1828); Wiliston, Synop. N. A. Syrph., 190 (1886). 



Five s $ taken at Lincoln, Lancaster County, and Mitchell, 

 Scottsbluff County in July and September. 



Helophilus integer Loew. Cent., iv, 76 (1863) ; Williston, Synop. N. A. 

 Syrph., 195 (1886) ; Hunter, Canad. Ent., xxiv, 139 (1897). 



Two s $ and twelve 9 9 taken at Omaha, Douglas 

 County; Lincoln, Lancaster County; West Point, Cuming 

 County, and Mitchell, Scottsbluff County, between June 13th 

 and August 12th. 



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