jiBT. 7 AMERICAISr MUSOOID FLIES I^^T VrENNA MUSEUM ^ALDEICH 19 



a slight pubescence in well-preserved specimens. Vibrissae slightly- 

 above oral margin, face not much receding, long and narrow, the 

 ridges bare; palpi yellow, ordinary; cheek about one-third the eye 

 height; proboscis short, fleshy. 



Thorax considerably damaged; its ground color is black, the dor- 

 sum yellow pollinose, on which stand out the narrow intermediate and 

 broad interrupted lateral stripes in black, also a black basal semi- 

 <3ircle on scutellum. Chaetotaxy, as far as can be made out: acros- 

 tichal ( ? ) ; dorsocentral, 2, 3 ; humeral, 2 ; notopleural, 2 ; posthu- 

 meral, 1 ; presutural, 1 ; supraalar, 3 ; intraalar, 3 ; postalar, 2 ; scutel- 

 lum with two lateral, one long apical; sternopleural, 2, 1; no ptero- 

 pieural ; hypopleural, 6. Postscutellum well developed. 



Abdomen yellow in ground color, tip of third segment and all but 

 base of fourth black ; bases of segments narrowly yellow-pollinose, in 

 a very flat view the pollen grows much more extensive ; first and sec- 

 ond segments with one pair of median marginals, third and fourth 

 with marginal row, no discals on any segment. Genital segments 

 very small. 



Legs black ; claws and pul villi a little elongated ; middle tibia with 

 a single bristle on outer front side ; hind tibia not ciliated. 



Wings quite uniformly infuscated, the veins on apical half bor- 

 dered by a deeper shade, as Wiedemann says, fourth vein with oblique 

 curve, then concave, the first posterior cell open not far before the 

 apex ; third vein with only two or three hairs at base. 



Length, 8.6 mm. 



The species is not in the National Museum. It is not the type of 

 any genus. 



98. NEOMINTHO MACILENTA Wiedemann 



TacMna macilenta Wiedemann, Auss. Zweifl., vol. 2, 1830, p. 305. 

 Neomintho macilenta Bkaxjek and Beegenstamm, Denk. Wien, Akad. Wiss., 

 vol. 58, 1891, p. 339 ; vol. 60, 1893, p. 120. 



Two males, " Brazilien," and " macilenta, Coll. Winthem." They 

 agree with the descriptions except that the white pollen of the 

 scutellum and the two slender black lines on the anterior part of 

 the mesonotum are visible from behind, not in front. Undoubtedly 

 the types. The genus was established by Brauer and Bergenstamm 

 (1891, p. 339) for this species and two others. Townsend designated 

 'macilenta as type in 1916,^* carrying out the apparent intention of 

 the authors, who mentioned only this species in their 1893 paper 

 (p. 120). Wiedemann's description is fairly recognizable, especially 



^* Ins. Ins. Menst., vol. 4, p. 8. 



