522 PROCRElilNGS OF TBE NATIONAL MUSEVM. vol.44. 



brown on the costa and along the veins, and at the same time is 

 large enough (12 mm) to answer this description. It agrees very 

 well with the Mexican Trimicrje. 



GNOPHOMYIA LUCTUOSA Oslen Sacken. 



Gnophomyia luctuosa Osten Sacken, Proc. Acad. Nat. Sci. Phila., 1859, p. 224, 



male; Monographs, vol. 4, 1869, p. 174; Cat. Dipt. N. Amer., 1878, p. 30; 



Berl. Ent. Zcit., vol. 31, 1887, p. 198.— Johnson, Proc. Acad. Nat. Sci. 



Phila., 1895, p. 320.— Kertesz, Cat. Dipt., vol. 2. 1902. p. 210.— Aldrich, 



Cat. N. Amer., Dipt., 1905, p. 87. 

 Limnohin nigricola Walker, Trans. Ent. Soc. Lond., 1860, p. 333. 



One female from Guatemala, Central America (Sept., 1902) 

 (Coll. G. Eisen.). 

 Length, 6 mm.; wing, 6.3 mm. 

 Specimen in U. S. National Museum collection. (See fig. 29.) 



S 



GNOPHOMYIA RUTITHORAX Wiedemann. 



Limnobia rufithorax Wiedemann, Auss. Zweifl. Ins., vol. 1, 1828, p. 548, male. 

 Furina rufithorax J-ennieke, Abhandl. Senckenber. Ges., vol. 6, 1867, p. 318, 



pi. 43, fig. 1. 

 Gnophomyia rufithorax Osten Sacken, Berl. Ent. Zcit., vol. 31, 1887, p. 198.— 



Hunter, Trans. Amer. Ent. Soc, 1900, p. 291.— Kertesz, Cat. Dipt., 



vol. 2. 1902, p. 211. 



Male. — Somewhat injured, head missing. 



Thorax: pronotum black, reddish along the caudal margin. 

 Mesonotum: j-ellowish-orange, darker, brownish, behind. Pleurae 

 orange, the meso- and meta-coxae orange at the bases. Legs black. 



Wings brown, posterior cells paler. (See fig. 32.) 



Abdomen black. 



Male, wing 1 1 ..5 mm. 



Chapada, Matto Grosso, Brazil (March) (IT. H. Smith, coll.) (speci- 

 men in American Museum of Natural History). 



GNOPHOMYIA MAGNIFICA, new species. 



Head, legs and wings black; thora.x and alxlomen orange-yellow. 



Female. — Length 14 mm.; wing, 13 mm. 



Head: rostrum and palpi dark brownish-black. E3-es rather 

 approximated; antennaj entirely black. Front, vertex and gense 

 black, occiput dull orange-yellow; front shiny. 



Thorax: pronotum, scutum bright orange-yellow, darker in front, 

 paler behind; scutellum naiTOw, transverse, pale yellow. Meso- 

 notum: pra>scutum deep orange-yellow without stripes, a row of 

 hairs along either side of the middle prominence, passing mesad of 

 the pscudosutural fovea, a rounded whitish spot occupying the 

 region of the pseudo-suture, lateral margins of the sclerite paler, 

 light yellow; scutum, scutellum and post-notum orange-yellow, the 

 latter slightly sulTused with brown, cspecialh' medially. Pleurce 



