64 



Genus MACaUARTIA Desv. 



Macquartia Desvoidy, Essai siir les Myodains, p. 204; 1830. 



Amedea Dosvoitly, loc. cit., p. 207. 



Albinia Desvoidy, loc. cit., p. 209. 



Aporia Maequart, Dipteres Exotiques, Snpp. I, p. 1G8; 1846. [Xon Huebuer; 1816.) 



This syuouymy, with the exception of the last one, is given by Schi- 

 uer;' the name of Aporia having previously been emijloyed in the 

 Lepidoptera, the species heretofore placed in this genus may with pro- 

 priety be placed in Macquartia, to which genus our species has been 

 referred by Brauer and Bergenstamm in litt. Our single species is 

 '^J/- black, tlte- baoc of the an tennre'; palpi, and apex of pr eboisdbs, yellow; 

 three postsutural and two sternopleural macrocluetic ; length, 8 to 10 

 mm. Mount Washington, N. H.; JSTew Bedford, Mass.; District of 

 Columbia; Aurora Mills, Oreg., and Siskiyou County, Cal. (List of 

 Dipterous Insects, Part IV, p. 841; 1849: Dexia. Aporia Umacodis 

 Townsend, Psyche, Vol. VI, p. 275; June, 1892. Macquartia sp., Brauer 

 and Bergenstamm in litt. ) y/^priatis Walk. 



, ^"^nus HYALURGUS Br. and Berg. '^• 



Hyalurf/its Brauer and Bergcustauim, Zweif. Kais. Mus. Wieu, VI, p. 136; 1893. 



Our species is black, the base of antennte, palpi, apex of proboscis, 

 scutellum, tibiic, and tarsi, yellow; three postsutural and three sterno- 

 pleural macrochjetai, last three segments of abdomen bearing discal and 

 marginal macrochwtie, middle tibi.e each bearing three macroch;etie on 

 the front side near the middle; length, 7 mm. Illinois. (Can. Ento- 

 mologist, Vol. XXIV, p. 81 ; April, 1892 : Macquartia.) . .johnsoni.Town. 



Genus POLIDEA Macq. 



Harrisia Meigen, System. Bescb. Eur. Zweif. Insekten, Vol. VII, p. 260; 1838. {Xo7i 



Desvoidy; 1830.) 

 Po/irfea Maequart, Auuales Soc. Eut. Frauce, p. 92; 1848. 

 ,Sowio/e/a Eondaui, Atti Soc. Italiaua Sci. Nat., Vol. VIII, p. 35; 1865. 



Polidea was proposed for the genus Harrisia of Meigen, the latter 

 name haviug been previously used in the Diptcra. According to Brauer 

 and Bergenstamm, Harrisia of Meigen is identical with Somoleja of 

 Rondani.- Our single species has the body and sides of the front 

 shining black, with a tinge of bronze, almost destitute of pollen; three 

 postsutural and three sternopleural macrochtet*, last three segments of 

 abdomen bearing discal ones, third vein bristly at least halfway from 

 base to small crossvein, middle tibi;e each bearing two or more macro 

 chaette on the front side near the middle ; length, 5 to 7 mm. Georgetown, 

 Canada; White Mountains and Franconia, N. H.; Xew Bedford, Mass. ; 



1 Fauua Austriacn, Vol. I, p. .528; 1862. 

 ^Zweif. Kais. Mus. Wien, VI, p. 231; 1893. 



