64 
Genus MACQUARTIA Desv. 
Macquartia Desvoidy, Essai sur les Myodaires, p. 204; 1830. 
Amedea Desvoidy, loc. cit., p. 207. 
Albinia Desvoidy, loc. cit., p. 2<>i>. 
Aporia Macquart, Dipteres Exotiques, Supp. I, p. 16S; 1846. (Non Huebner; 1816.) 
This synonymy, with the exception of the last one, is given by Schi- 
ner; 1 the name of Aporia having previously been employed 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 lift. Our single species is 
black, the base of the antenna', palpi, and apex of proboscis, yellow; 
three postsutural and two sternopleural macrochaetae; length, 8 to 10 
mm. Mount Washington, N. H.; New Bedford, Mass.; District of 
Columbia; Aurora -Mills, Oreg., and Siskiyou County, Cal. (List of 
Dipterous Insects, Part [V, p. 841; 1849: Dexia. Aporia limacodis 
Townsend, Psyche, Vol. VI, p. U75; June, 1892. Macquartia sp., Brauer 
and Bergenstamm in litt.) jwistis Walk. 
Genus HYALURGUS Br. and Berg. 
Hyalurgu* Brauer and Bergenstamm, Zweif. Kate. Mna. Wieu, VI, p. 136; 1893. 
Our species is black, tin- base of antenna', palpi, apex of proboscis, 
seutellum, tibia 1 , and tarsi, yellow; three postsutural and three sterno- 
pleural macroeliata', last three segments of abdomen bearing diseal and 
marginal maeroch;et;e. middle tibia' each bearing three inacrochsetse on 
the front side near the middle; length, 7 mm. Illinois. (Can. Ento- 
mologist, Vol. XXIV, p. 81 ; April. 1892 : Macquartia,). .johmoni Town. 
Genus POLIDEA Macq. 
Harrisia Meigen, System. Beach. Eur. Zweif. Inaekten, Vol. V.II, p. 260; 1838. (Xon 
DesYoidy; 1830.) 
J'oHden Macqaart, Anna Irs Sue. Ent. France, p. !>2; 1818. 
Somoleja Rondani, Atti Soc. Italiaua Sri. Nat., Vol. VIII, p. 3."); 1865. 
Polidea was proposed for the genus Harrisia of Meigen, the latter 
name having been previously used in the Diptera. According to Brauer 
and Bergenstamm, Harrisia of Meigen is identical with Somoleja of 
Eondani. 2 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 inacrochreta', last three segments of 
abdomen bearing diseal ones, third vein bristly at least halfway from 
base to small crossvein, middle tibiae each bearing two or more macro 
elneta' on the front side near the middle ; length, 5 to 7 mm. Georgetown, 
Canada ; White Mountains and Francoiiia, N. H. ; Xew Bedford, Mass. ; 
] Fauna Austriaca, Vol. I, p. 528; 1862. 
-Zweif. Kais. Mus. Wien, VI, p. 231: 1893. 
