EMPEDA. 183 



venter yellow ; male forceps yellow, with black horny appendages 

 (Tab. IV, fig. IT). Wings with the cross- veins and the inner 

 ends of the basal cells, and of the second submarginal and second 

 posterior cells clouded ; the stigma and the portion of the anterior 

 margin between it and the tip are blackish ; the prsefurca, strongly 

 arcuated at the basis, is parallel, during the remainder of its course, 

 to the first longitudinal vein ; the tip of the anterior branch of the 

 second longitudinal vein is coincident with the tip of the first 

 longitudinal vein ; the origin of the prsefurca is a little anterior 

 to the tip of the auxiliary vein ; the second submarginal cell is 

 longer than the first posterior ; generally there is a stump of a 

 vein near the origin of the praefurca, and an indication of a second 

 stump at the inner end of the second posterior cell ; discal cell 

 open ; the great cross-vein is a considerable distance before the 

 inner end of the discal cell. 



Hob. Washington, D. C. ; Trenton Falls, N. Y. ; South Caro- 

 lina (Berlin Museum). 



Gen. XXIV. EMPEDA. 



Two submarginal cells ; the first rather short, owing to the shortness 

 and the oblique direction of the anterior branch of the second longitudinal 

 vein ; a distinct marginal cross-vein connecting the first and second longi- 

 tudinal veins is inserted a considerable distance before the inner end of 

 the first submarginal cell ; four posterior cells ; discal cell closed or open ; 

 when open, it coalesces with the second posterior cell. Wings glabrous. 

 Antennae 16(?)-jointed. Tibise without spurs at the tip, tarsi with distinct 

 empodia. 



This genus is undoubtedly allied to Goniomyia, as the general 

 appearance, the coloring, and in part also the venation of the 

 species show. Dr. Schiner (Fauna Austriaca, Diptera, II, p. 542) 

 gave a wider definition to Goniomyia, so as to embrace this group 

 of species also. I think, however, that it is sufficiently distinct, to 

 be introduced as a separate genus, leaving Goniomyia with its. 

 former definition (as adopted by me in 1859). Empeda differs 

 from Goniomyia in the following characters : 1. The marginal 

 cross-vein is present ; but owing to the shortness of the anterior 

 branch of the second longitudinal vein, it is not this branch, but 

 the petiole of the first submarginal cell, which the cross-vein 

 connects with the first vein ; the cross-vein is thus placed between 

 the origin of the third longitudinal vein and the fork of the 



