CATALOGUE OF NORTH AMERICAN DIPTERA, 53 I 



Hough, Biol. Bull, i, 22, figs. ; comparison with aids. 



Generally distributed throughout the United States and Eastern Canada; 

 it reached Idaho in 1901 ; the larvae are found in fresh cow-dung. 



HEMICHLORA. 



Van der Wulp, Biologia, Dipt., 11, 303, i8y6. 

 vittigera Bigot, Bull. Soc. Zool. France, 1887, 613 (Cyrtoncura).— Mexico. 



? Wiedemann, Auss. Zweifl., 11, 354 (Idia viridis).—^. A. 



GiGLio-Tos, Ditt. del Mess., iv, 13 (Cyrtoneurina). — Mex. 



Van der Wulp, Biologia, Dipt, 11, 303, pi. vii, f. 21, oc. and notes. — Guer- 

 rero, Mex.; Guatemala. 



WiLLiSTON, Manual, 143, may be Idia viridis Wied. 



Brauer, Sitzungsber. d. K. Akad., cviii, 526, notes on Bigot's type,— re- 

 fers it to the Anthomyidse. 



Hough, Biol. Bull, i, 22, syn. of viridis, with a little doubt. 



MYIOSPILA. 



RoNDANi, Dipt. Ital. Prod., i, 91, 1856 (Myospila). 



Schiner, Fauna Austr., i, 598, 1862 (id.). 



Brauer and Bergenstamm, Zweifl. d. Kaiserl. Mus., iv, 156, 1889; vi, 179, 

 1893. 



Van der Wulp, Biologia, Dipt., 11, 303, 1896. 

 meditabunda Fabricius, Spec. Ins., 11, 444 (Miisca) ; Syst. Antl., 297 (id.).— 

 Europe. 



Meigen, Syst. Beschr., v, 79 (Mitsca). 



Schiner, Fauna Austr., i, 598. 



? Thomson, Eugen. Resa, 549 (Cyrtoneura quadrisctosa). ~Cal [Hgh., 

 with a doubt] 



Osten Sacken, Berl. Ent. Zeitsch., xxxi, 22, note on eggs, from Portchin- 

 sky. 



Van der Wulp, Biologia, Dipt., 11, 303, oc— Durango, Orizaba and Guer- 

 rero, Mex. 



Coquillett, Proc. Wash. Acad. Sci., 11, 441, oc. in Alaska. 



Hough, Biol. Bull., i, 23, figs. 



Howard, Proc. Wash. Acad. Sci., 11, 576, figs, and habits; reared from 

 human excrement; Canad. Ent., xxxiii, 44, oc. in Va. ; breeds abund- 

 antly in cow-dung. 



Common throughout the United States. 



MUSCINA. 

 Desvoidy, Myodaires, 406, 1830. 

 Brauer and Bergenstamm, Zweifl. d. Kaiserl. INIus., v, 391, 1891; vi, 179, 



1893 (both Pararicia) ; syn. in index, vi, 235. 

 Van der Wulp, Biologia, Dipt., 11, 304, 1896. 

 Hough, Biol. Bull., i, 24, 1899; table of species. 

 assimilis Fallen, Muscides, 56 (Musca). — Europe. 

 Meigen, Syst. Beschr., v, 76 (Musca ccesia). 



Desvoidy, Myodaires, 408 (Miiscina fungivora and perhaps concolor). 

 Macquart, Dipt Nord France, 11 {Cyrtoneura apcrta). 

 Zetterstedt, Ins. Lapp., 660 {Musca borealis) ; Dipt. Scand., iv, 1350 



{Cyrtoneura assimilis and ccesia). 

 Schiner, Fauna Austr., i, 597, 598 (id.). 



