200 



Allotype. — 9: Dongola, Illinois, May 12, 1917 (C. A. Hart and J. R. 

 Malloch). 



Paratypes. — £ and 9: Dongola, Illinois, May 12, 1916, May 9, 10 and 

 12, 1917 (C. A. Hart and J. R. Malloch); Dubois, Illnoi?, May 24, 3917 

 (C. A. Hart and J. R. Malloch); Carlinville, Illinois, May 18 (C. 

 Robertson). 

 Helina nigrita Malloch 



Trans. Amer. Ent. Soc, Vol. XLVI, June 12, 1920, p. 139. 



Type.— (J : Monida, Montana, July 27, 1913. 

 Helina spinilamellata Malloch 



Trans. Amer. Ent. Soc, Vol. XLVI, June 12, 1920, p. 140. 



Type. — <J : Bozeman, Montana, July 17, 1916. 

 Helina tuberculata Malloch 



Can. Ent., Vol. LI, No. 12, December, 1919, p. 277. 



Type.— ,J: Rigolet, Labrador, July IS, 1906. 



Allotype.— 9: Alberta, Canada, Lake Louise, July 15, 1908 (G. S. Minot). 

 Hydrophoria collaris Van der Wulp 



Biol. Centrali-Americana, Insecta-Diptera, Vol. II, May, 1903, p. 333. 



Cotype. — 9 Omilteme, Guerrero, Mexico, 8000 feet elevation, July (H. H. 

 Smith). 



Malloch (1921) has transferred this species to the genus Pcgomyia R. — 

 Desvoidy. 

 Hydrophoria flavipalpis Van der Wulp 



Biol. Centrali-Americana, Insecta-Diptera, Vol. II, May, 1903, p. 334. 



Cotype. — (5 : Sierra de las Aguas Escondidas, Guerrero, Mexico, 7000 feet 

 elevation, July (H. H. Smith). 



Malloch (1921) has transferred this species to the genus Emmesomyia 

 Malloch. 

 Hydrophoria nigerrima Malloch 



Trans. Amer. Ent. Soc, Vol. XLVI, June 12, 1920, p. 169. 



Paratypes. — <$ and 9 : Mt. Rainier, Washington, on snow, 7000-9000 feet 

 elevation, August, 1917 (A. L. Melander) ; Mt. Rainier, Washington, 

 Paradise Park, August, 1917 (A. L. Melander) ; Mt. Rixtord, California, 

 on snow, 12000 feet elevation, August 12, 1914 (R. L. B.). 

 Hydrophoria polita Malloch 



Trans. Amer. Ent. Soc, Vol. XLVI, June 12, 1920, p. 170. 



Type. — ,5 : Bozeman (Copperopolis), Montana, elevation 5400 feet, July 

 "23, 1902 (J. M. Aldrich). 



Allotype. — 9 Bozeman (Copperopolis), Montana, 5400 feet elevation, July 

 23, 1902 (J. M. Aldrich). 



Paratype.— 5 : Wells, Nevada, July 12, 1911 (J. M. Aldrich). 



Nothing remains of paratype but part of thorax and wings. 

 Hydrophoria proxima Malloch 



Trans. Amer. Ent. Soc. Vol. XLVI, June 12, 1920, p. 171. 



Paratype.— Princeton, Maine, July 12, 1909 (C. W. Johnson), 

 Hydrophoria subpellucida Malloch 



Trans. Amer. Ent. Soc, Vol. XLIV, October 28, 1918, p. 296. 



Paratypes. — 5 and 9: Alamogordo, New Mexico, June 30 and May 15, 

 1902. 

 Hydrophoria transversalis Van der Wulp 



Biol. Centrali-Americana, Insecta-Diptera, Vol. II, May, 1903, p. 334. 



Cotypes. — $ and 9: Sierra de las Aguas Escondidas, Guerrero, Mexico, 

 7000 feet elevation, July (H. H. Smith); Omilteme, Guerrero, Mexico, 

 8000 feet elevation, July (H. H. Smith). 



In poor condition. Stein has sunk this species as a synonym of ■pictipes 

 Bigot and placed it in the genus Taeniomyia Stein. Malloch (1921) con- 

 siders that this species belongs in the genus Pegomyia R. — Desvoidy. 



