Il6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 51 



XANTHOZONA, gen. nov. 



This genus is proposed for Tachina melanopyga Wiedemann. 

 Two female specimens in U. S. N. M., Campinas, Brazil (A. Hem- 

 pel), and Sao Paulo, Brazil (Ad. Lutz), labeled "parasitic on Brass- 

 olis astyra." 



The ventral plates (female) only narrowly showing, overlapped 

 by edges of corresponding dorsal plates, exposed portion being 

 wider behind and narrowed anteriorly owing to the posteriorly 

 rounded-off shape of edges of dorsal plates overlapping them, the 

 posterior ones showing more widely than anterior ones, all widen- 

 ing successively from anterior to anal segments. 



Family MUSCIM 



Subfamily Calliphorix.E 



Genus Calliphora Robineau-Desvoidy 



Girschner and Hough have paved the way for a clearer under- 

 standing of Calliphora and its allies, and the genera as established 

 by them are accepted in this paper, with the addition of two new 

 ones. 



Calliphora texensis, sp. nov. 



Two males, three females, Paris. Texas. A. A. Girault, Coll. 



Length, 9 to 11 mm. Differs from C. coloradensis Hough in the 

 third posterior intra-alar bristle being absent and without a trace. 

 The male front at vertex is about one-fifth of head width, and nar- 

 rows very noticeably in front of vertex in an even curve, widening 

 at same curve on anterior portion. The male parafrontals and para- 

 facials are conspicuously pale brassy. The female parafrontals are 

 obscure brownish, the parafacials light russet and unicolorous with 

 facialia and facial plate, which are also this color in male. In one 

 female the anterior reddish portion of buccal (hairy part of cheeks) 

 looks almost black in some lights, but the reddish tinge can be dis- 

 tinctly seen, and the specimen should be included with this species. 

 The color of abdomen varies from metallic green to purplish blue. 



Type'.— Cat. No. 10,883, U. S. N. M. 



Calliphora rubrifrons, sp. nov. 



Two females, one male, Stickeen River, British Columbia, H. F. 

 Wickham, Coll. ; two females, one male, Kaslo, British Columbia, 

 H. G. Dyar, Coll. 



