143 



4. Thorax bluish, subshiuing, thiuly gray polliiiose, and marked with 

 four bhick vitte; abdomeu blackish, strongly tinged with blue, 

 first joint of arista scarcely longer than wide; length, 10 to 15 

 mm. White Mountains, New Hampshire; Beverly, Mass.; New 

 York, N. Y. ; District of Columbia; Virginia; North Carolina; 

 Florida; Tifton, Ca. ; Holly Springs, Miss.; Cadet, Mo., and 

 Keokuk, Iowa. (Essai sur les Myodaires, p. 35; 1830; Junnia. 

 Jurinia leucostonia Desvoidy, loc. cit., p. 37. Jioinia smaragdina 

 Macquart, Bipteres Exotiques, Vol. II, Part III, p. 196; 1842. 

 Tachina atra Walker, lusecta Saundersiana, Vol. I, p. 273; 1856. 

 Archytas aterrima Desv., Brauer and Bergenstamm in litt.) 



aterrima Desv. 

 Thorax with a bronze tinge, subopaque, gray pollinose and marked 

 with four black vittfiB; abdomen black, with a bluish tinge, the 

 sides broadly reddish, first joint of arista usually twice as long- 

 as wide; length, 11 to 15 mm. Massachusetts, North Carolina, 

 Georgia, Florida, and Colorado. (Dipteres Exotiques, Vol. II, 

 Part II, p. 199 [42] ; 1842. Tachina candens Walker, List of 

 Dipterous Insects, Part IV, p. 720; 1849. Tachina iterans Walker, 

 1. c, p. 727. Jurinia apicaUs Jaennicke, Neue Exot. Di])t., p. 82 

 [39(» I ; 1867. Echinomyia victoria Townsend, Annals Mag. Nat. 

 Hist., Vol. XIX, p. 148; February, 1897.) lateralis Macq. 



Genus ECHINOMYIA Dumeril. 



Echinomyia Dumeril, Exposit. Metliode Natiirelle Class. Insectes; 1801. 

 F.ibricia Desvoidy, Essai sur les Myodaires, p. 42; 1830, (Non Blaiuville, 1828.) 

 Mikia Kowarz, Wiener Ent. Zeituug, Vol. IV, p. 51; February 1, 1885. 

 I'areudora Waclitl, Wiener Ent. Zeitung, Vol. XIII, p. 140; April 20, 1894. 

 Nowiekia Waclitl, loc. cit. 

 Pararchyias Brauer and Bergenstamm, Zweif. Kais. Mus. Wien, VII, p. 614; 1894. 



The two genera of Wachtl are stated by Brauer and Bergenstamii^ 

 to be identical with Echinomyia, and they place Fabricia, Mikia, and 

 Pararchytas as subgenera of it.' Our species have four postsutural 

 and usually three sternopleural macrochictie : 



1. Small crossvein never clouded with brown 2. 



Small crossvein distinctly clouded, sides of mesonotum, scutellum, 

 and abdomeu, except sometimes a dorsal vitta, yellowish red; 

 base of wings brown; length, 11 to 13 mm. Toronto, Canada; 

 White Mountains, N. H.; New Jersey; Colorado, and southern 

 California. (List of Dipterous Insects, Part IV, p. 715; 1849: 

 Tachina. Jurinia echiriata Thompson, Kongliga Sveuska Fre- 

 gatten Eugenies Resa, Diptera, p. 516; 1868. Tachinodes decim 

 Walk., Brauer and Bergenstamm in litt.) decisa WalU. 



'Zweif. Kais. Mus. Wien, VII, p. 614; 1894. 



