OF WASHINGTON, VOLUME XIX, 1917 23 



known to have this habit are Biomyia (/cmy'iie B. and B., and B. 

 lachnosternae Town., EuhaUdaya (Hi-nnnjid) genalis Coq., de- 

 scribed by me as E. severinii, arid parasitic on Diapheromera 

 (Orthoptera) is of course not a Biomyia in any sense but repre- 

 sents, in my opinion, a valid genus very close to Holiday a of 

 Egger. 



Eleodiphaga new genus. 



Moderately robust, head (pi. 5, fig. 1) large, wider than thorax, dis- 

 tinctly conical, much thicker at insertion of antennae than at vibrissae. 

 Wings rather short, legs robust. 



Front abruptly produced, antennae inserted distinctly above the 

 middle of eye, face sloping downward in a gentle convex curve to vibrissae 

 which are inserted slightly below the oral margin. Cheeks equal in width 

 to at least two-thirds height of eye. Front at vertex nearly twice as wide 

 as eye, the vitta occupying one-third or more of its width. The frontalia 

 thickly sprinkled with macrochaetae. Parafacials more than half as wide 

 as facial depression, their lower half plentifully sprinkled with irregularly 

 arranged bristles. Facial depression deep, its sides almost parallel, 

 carina nearly obsolete. Fascialia bearing bristles on approximately the 

 lower two-thirds. Antennae, in the male, very long, first two segments 

 elevated above the level of the front, third segment slightly longer than 

 the face, its long sides nearly parallel, at least six times longer than broad 1 

 and of a velvety texture. Arista inserted at extreme base of third seg- 

 ment and thickened to its tip, second joint only slightly longer than broad. 

 Vibrissae short, rather weak, not decussate, and directed downward. 

 "Transverse depression" of face not transverse but running almost verti- 

 cally from corner of eye to oral margin, the cheeks proper merging immedi- 

 ately with inferior occipital surface. Eves absolutely bare, small and 

 oval in shape. Frontal macrochaetae arranged in two rows, the upper 

 ones not noticeably stronger than the lower, descending well below in- 

 sertion of arista. No true orbitals present in male. Occllar bristles well 

 developed arid widely divergent but directed forward. Ocellar triangle 

 unusually large. Proboscis very short, fleshy; palpi, normal. Wings 

 (pi. 5, fig. 2) with the apical cell long-petiolate, ending in the costa, well 

 before tip of wing, the petiole about twice as long as small crossvein. 

 Costal spine obsolescent but distinguishable. All veins bare excepting 

 base of the third which bears two or three ordinary bristles. Front claws 

 of male not elongated, the hind tibiae coarsely pectinate but not ciliate, 

 with coarse bristles. The tarsi all rather Ninall and weak. 



This genus seems to be related to both Phasmophaga, Town., 



and Hypcrecteina (Admontia) Schiner. 

 Type of the genus, E. caffreyi new species. 



