TAXONOMY OF MUSCOIDEAN FLIES — TOWNSEND 120, 



more or less pollinose, pollen being grayish with a hardly brassy 

 tinge. 



Veracruz and Nicaragua. 



Tribe Xanthomelanodini 

 Genus Xanthomelanodes Townsend 

 Syn. Xanthomelana van der Wulp preocc. 



The name used by van der Wulp was applied by Bonaparte to a 

 genus of birds in 1850. 



Xanthomelanodes arcuata Say. — Only a single vibrissa on each 

 side. 



Male. — Front and face deeply golden, especially parafrontals. 

 Abdomen usually with a well-defined black median vitta, last seg- 

 ment and last half of penultimate segment black. 



Female. — Front and face silvery-white. Abdomen all black ex- 

 cept yellow on sides of second and third segments, only covering 

 anterior half of third segment, but some specimens show less black. 



New Hampshire, Kansas, Veracruz. 



Xanthomelanodes atripennis Say. — One vibrissa on each side. 



Male. — Front golden. Abdomen golden, with only some brown- 

 ish shading for the median vitta. Wings quite smoky on inner 

 border. 



Dixie Landing, Virginia (Townsend). 



Xanthomelanodes californica, sp. nov. 



Two vibrissas on each side. 



Male. — Front and face almost silvery, with only a faint suggestion 

 of golden, in some specimens quite silvery-white. Abdomen ferru- 

 ginous, more or less dusky, the brown markings not well defined as 

 a rule, consisting of a broken median stripe and the usual dark 

 markings of last two segments. 



Female. — Face and parafrontals silvery-white. Abdomen nearly 

 same as in arcuata. 



Colorado, Nevada, California. 



Type. — Cat. No. 11,654, U. S. N. M. (male, Los Angeles county, 

 California, Coquillett). 



Tribe Trichopodini 



The following is a table of the genera of this tribe : 



I. Hind tibiae without flattened cilia, with only a row of short appressed 



bristles and one or two stronger bristles among them 2 



Hind tibiae ciliate with the usual flattened cilia 3 



