332 



NORTH AMERICAN DII'TKRA. 



The above definition will, in most cases, distinguish 

 the members of this large family of inconspicuously col- 

 ored flies. Its limits, however, are net sharp; with the 

 true muscids it is connected by Muscina and allied forms; 

 with the Cordyluridae by Fuccllia, etc. When one has 

 become tolerably well acquainted with the allied fa mi- 



Fig. 136, Anthomyidae. I, Hyetodesia {Phaonia) Ittcorum, head, 

 from front; 2, Schcenotnyza chrysostonta, head, from in front; 3, Cae- 

 fiosiu cinerea, head; 4, Lasiops spiniger, wing; 5, Lasiops spiniger', 

 head; 6, Phyllogaster cordyluroides, head; 7, Homalotnyia [Fannia) 

 scalaris head; 8, Homalotnyia scalar is, wing; 9, Ophyra aenescens, 

 head; 10, Spilogaster, species, head; 11, Spilogasler, winy; 12, Leuco- 

 melina, species, winy; 13, Leucomelina, antenna; 14, /./.v/><; uliginosa, 



head; 15, Lispa, species, head from in front; 16, LintOpkOTQ exul, head. 



