No. i.] SOME MUSCINAE Ol- .VfVv'/V/ AMERICA. 



2 7 



FIG. 9. 



l^scndopvrcllia (I r ig. 9). --Our only known species is /'. 

 cornicina Fabr. I consider Lucilia carolincnsis Desv., L. coin- 

 par Desv., and L. Hcraea 

 Walk., as synonyms. 



Pyre Ilia (Fig. 10). - 

 The only North American 

 species that I have seen 

 is P. cyanicolor Zett. The 

 specimens agree perfectly 

 with the description and 

 with European specimens 

 from Prof. G. Strobl and 

 others. P. sctosa Lw. is a 

 synonym ; I have com- 

 pared the types in the 

 Agassiz Museum with my 

 American and European specimens. Occasionally one finds 

 a specimen which is of a rather bright metallic green instead 

 of the usual dark steely blue, but I can find no structural or 

 other color differences. Musca occidcntis Walk., Dipt. Saund, 



p. 347, is probably this 



same species. 



P. cadavcrina L. may be 

 distinguished from cyani- 

 color by the entire absence 

 of any trace of hoary coat- 

 ing on the thorax even at 

 the cephalic border, while 

 cyanicolor has three broad 

 hoary stripes, a median 

 and two humeral, which 

 are specially distinct at 

 the cephalic border. 

 Mesembrina. - There is but one known North American 

 species, which we must call M. latrcillii Desv. (Fig. 11) be- 

 cause no other species is known. Desvoidy says : " Tout a 

 fait semblable au M. mcridiana ; un pen plus petite; antennas 

 brunes ; la face est d'un argente brillant sur les cotes." Now 



FIG. 10. 



