68 DIPTERA OP NORTH AMERICA. [PART IV. 



with yellowish and with brown stripes ; the pleurae with a serice- 

 ous, yellowish reflection. Halteres brownish, pale at the root ; 

 abdomen brown, genitals paler ; feet brownish, coxas paler. Tip 

 of the auxiliary vein nearly opposite the origin of the praefurca ; 

 the subcostal cross-vein is at a distance from the tip of the 

 auxiliary vein which is not much less than the length of the 

 stigma ; the cross-vein at the inner end of the discal cell is but 

 very slightly arcuated ; discal cell closed. 



Sab. Florida. 



This species is very like D. stulta in general appearance, but 

 easily distinguished by the great distance between the subcostal 

 cross-vein and the tip of the -auxiliary vein. I brought six 

 specimens from Florida with me (caught in March, 1858) ; but 

 I have only two left now. The rostrum seems to be of a pale 

 color ; but I cannot perceive it distinctly. 



10. U. stulta 0. S. % and £ . — Brurmea, humeris pleurisque pallidi- 

 oribus ; antennis palpisque nigris ; venula transversa subcostalis apici 

 vense auxiliaris approximata ; venula transversa quae cellulain discoi- 

 dalem a cellula basali prima separat, valde arcuata ; alse irnmaculatse, 

 stigmate pallido. 



Brown, humeri and pleurse pale ; antennse and palpi black ; subcostal 

 cross-vein near the tip of the auxiliary vein ; the cross-vein separating 

 the discal cell from the first basal cell is strongly arcuated ; wings im- 

 maculate, stigma pale. Long. corp. 0.22 — 0.3. 



Syn. Dicranomyia stulta 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1859, p. 210. 



Palpi and antennas black ; joints of the flagellum oblong ; front 

 and vertex grayish. Thorax yellowish tawny ; stripes brown, 

 more or less shining, almost confluent ; the intermediate one ex- 

 tends over the collare and has sometimes a pale longitudinal line 

 in the middle ; the lateral ones are extended beyond the suture ; 

 scutellum and metathorax brown ; halteres infuscated, pale at the 

 base ; feet brownish, pale at the base. Abdomen brown ; forceps 

 of the male but little paler ; the rostriforni appendage is small 

 and has two erect bristles ; ovipositor ferruginous. Wings some- 

 what tinged with grayish, stigma pale gray ; the tip of the aux- 

 iliary vein is nearly opposite the origin of the second longitudinal 

 vein ; the cross- vein is very near its tip (the distance is slightly 



