86 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5 1 



with a few bristles at base only, costal spine present. Type, the 

 following species : 



Acronarista mirabilis, sp. nov. 



One female, Palm Beach, Florida. Dr. H. G. Dyar, collector. 



Length, 4 mm. Blackish, with gray pollen. Antennae reddish 

 brown, becoming more or less reddish yellow at base. Face, front, 

 thorax, and scutellum silvery gray pollinose. Abdomen blackish, 

 narrow anterior margin of second and third segments and all of 

 fourth segment silvery gray pollinose. Legs quite blackish. Teg- 

 ulse whitish. Wings faintly tawny at base. 



Type.— Cat. No. 11,685, U. S. X. M. 



It is strongly probable that the male of Acronarista has the third 

 antennal joint much more elaborate in structure than that above de- 

 scribed for the female, and it will be very interesting to look for the 

 male in South Florida material. 



In Talarocera female the location of the arista approaches in a 

 measure that of Acronarista female, but is not nearly so apical. 

 Acronarista female seems to be a farther development of Talarocera 

 female in this regard, in that the ramus of third antennal joint bear- 

 ing the arista has become elongated and enlarged into almost the 

 counterpart of the other ramus, the elongation taking place at the 

 base of the ramus, and thus making the arista subapical thereto. It 

 is probable that in the male of Acronarista the arista will be found 

 to be apical to one of many rami, as in the male of Talarocera. 

 However, this would indicate no near relationship, since Talarocera 

 is a large form belonging to the Hystriciinse. 



LIXOPHAGA, gen. nov. 



Differs from Gymnostylia by having macrochsetae of abdomen 

 only marginal ; parafacials and parafrontals bare except for the 

 frontal and orbital bristles. Male cheeks hardly one-fourth eye 

 height : no orbital bristles in male, but a row of six or seven minute 

 bristles between frontalia and eye margin on the parafrontals. 

 Apical cell closed in margin just before wing-tip. Hind crossvein 

 in middle between small crossvein and bend of fourth vein, the latter 

 rounded and bent at an obtuse angle. Front about one-third head 

 width, widening on anterior portion. Face fully one-half head 

 width. Type, the following species. 



Lixophaga parva, sp. nov. 



One male bred from Lisas scrobicollis. Hunter No. 219, Dallas. 

 Texas, issued August 15, 1907. 



