CATALOGUE OF NORTH AMERICAN DIPTERA. 53! 



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., u, 303, 1896. 

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



?WIEDEMANN, Auss. Zweifl., ii, 354 (Idia viridis). N. A. 



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



VAN DER WULP, Biologia, Dipt., n, 303, pi. vii, f. 21, oc. and notes. -Guer- 

 rero, Mex. ; Guatemala. 



WILI.ISTON, Manual, 143, may be Idia viridis WIED. 



BRAUER, Sitzungsber. d. K. Akad., cvm, 526, notes on Bigot's type, re- 

 fers it to the Anthomyidae. 



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., n, 303, 1896. 



meditabunda FABRICIUS, Spec. Ins., 11, 444 (Musca) ; Syst. Antl., 297 (id.). 

 Europe. 



MEIGEN, Syst. Beschr., v, 79 (Musca). 



SCHINER, Fauna Austr., i, 598. 



? THOMSON, Eugen. Resa, 549 (Cyrtoncura quadrisetosa). Cal. [Hgh., 

 with a doubt.] 



OSTEN SACKEN, Berl. Ent. Zeitsch., xxxi, 22, note on eggs, from Portchin- 

 sky. 



VAN DER WULP, Biologia, Dipt., n, 303, oc. Durango, Orizaba and Guer- 

 rero, Mex. 



COQUILLETT, Proc. Wash. Acad. Sci., n, 441, oc. in Alaska. 



HOUGH, Biol. Bull, i, 23, figs. 



HOWARD, Proc. Wash. Acad. Sci,, n, 576, figs, and habits; reared from 

 human excrement ; Canad. Ent., xxxni, 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. Mus., v, 391, 1891; vi, 179, 



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

 VAN DER WULP, Biologia, Dipt., n, 304, 1896. 

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

 assimilis FALLEN, Muscides, 56 (Musca). Europe. 

 MEIGEN, Syst. Beschr., v, 76 (Musca cccsia). 



DESVOIDY, Myodaires, 408 (Muscina fungivora and perhaps concolor). 

 MACQUART, Dipt. Nord France, 11 (Cyrtoncura apcrta). 

 ZETTERSTEDT, Iris. Lapp., 660 (Musca borcalis) ; Dipt. Scand., iv, 1350 



(Cyrtoneura assimilis and ccesia). 

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



