DICRANOMYIA. 67 



is not paler on the under side, but uniformly brown ; the stigma 

 seems to be slightly longer ; otherwise they agree with D. brevi- 

 vena, and I am in doubt about their identity. 



8. D. fioridana, n. sp. % and 9 • — Brunnea, fronte albomicante, 

 rostro brevi, fusco; antennis nigro-fuscis ; vense auxiliaris apex prae- 

 furcae initio anterior ; praefurca brevi ; cellula discoidali aperta. 



Brown, front with a whitish reflection, rostrum short, brown ; antennae 

 brownish-black ; the tip of the auxiliary vein is anterior to the origin 

 of the prsefurca ; the latter short ; discal cell open. Long. corp. 0.2 — 0.3. 



Head including rostrum and palpi brownish, antennae black; 

 front with a whitish yellow reflection. Ground color of the 

 thorax dark tawny, almost concealed by the three brown stripes; 

 the intermediate one moderately shining, the lateral ones prui- 

 nose with grayish; humeral region finely sericeous with yel- 

 lowish ; metathorax brown, sericeous with brownish-yellow ; 

 pleural sericeous with gray. Abdomen brown, genitals sub- 

 ferruginous. Halteres with a fuscous knob. Feet dark tawny, 

 coxae and basis of the femora yellow. Wings somewhat tinged 

 with cinereous ; stigma pale ; venation like that of D. brevivena 

 and rostrifera, only the distance between the tip of the auxiliary 

 vein and the subcostal cross-vein is nearly equal to the whole 

 length of the stigma. 



Hab. Florida ; two male and three female specimens caught 

 by me in the spring of 1858 ; a pair of them were in copulation. 



9. D. distans 0. S. % and 9 • — Brunnea ; humeris pleurisque pallidi- 

 oribus ; antennis palpisque nigris ; venae auxiliaris apex initio praefurcae 

 plus minusve oppositus ; venula transversa subcostalis ab apice venae 

 auxiliaris remota ; venula transversa quae cellulam discoidalem a cellula 

 basali prima separat, parum arcuata ; alae immaculatae ; stigmate pallido. 



Brown, humeri and pleurae pale ; antennae and palpi black ; tip of the 

 auxiliary vein nearly opposite the origin of the praefurca ; subcostal 

 cross-vein at some distance from the tip of the auxiliary vein ; the cross- 

 vein, separating the discal cell from the first basal cell, is very little 

 arcuated ; wings immaculate ; stigma pale. Long. corp. 0.23 — 0.3. 



Syn. Dicranomyia distans O. Sacken, Proc. Ac. Nat. Sc. Phil. 1859, p. 211. 



Palpi and antennas black ; joints of the flagellum subglobular ; 

 front and vertex grayish-brown. Thorax dark tawny, sericeous 



