NORTH AMERICAN DIPTEKA. 12] 



subdiscal and marginal. Third vein bristly at base; apical cell open, 

 ending just before tip of wing; fourth vein at most with a vcrv 

 slight stump at bend. Type, E. enmyothyroides n. sp. 



Einphaiiopter} X oiimyolliyroides n. sp. % (?)._Eyes light brown, 

 frontal vitta light brown, more or less silvery in some lights; sides of front, 

 face and cheeks silvery cinereous: front pair of oeellar bristles strongest, directed 

 forward and outward; two orbital bristles; antenna* and arista brownish, first 

 two antennal joints brownish rufous, second joint very bristly and with a strong 

 bristle on front edge; proboscis brown, paljti pale brownish yellow: occiput sil- 

 very cinereous, gray-hairy below, black -bristly above. Thorax silvery cinereous, 

 with four heavy black vittae which become obsolete before reaching scutellum ; 

 scutelhini silvery-cinereous. Abdomen blackish or dark brown, almost wholly 

 silvery-cinereous pollinose, except posterior margins of segments; first segment 

 with a lateral pair and a median marijinal pair of macrochretae ; second with a 

 lateral, median marginal, median submarginal and discal pair; third with a 

 discal pair and eight or ten marginal; fourth with marginal, submarginal and 

 discal macrochsetae. Legs brownish rufous, tarsi blackish, femora somewhat 

 silvery, femora and tibiae bristly, especially latter; pulvilli .somewhat elongate, 

 fuscous. Wings grayish hyaline; teguke nearly white, edges slightly tawny, 

 halteres tawny. Length of body 8.5 mm. ; of wing 8.5 mm. 



Described from one specimen ; Ithaca, N. Y., May 21st (J. H. 

 Comstock). 



EU.MYOTHYRIA u. gen. 



Medium sized species, grayisli or pale ocheroiis, somewhat resein- 

 bling Pseudatradocero., but readily distinguished from that genus by 

 the much longer wings. Belongs in Phytoinse. Head quadrilateral 

 in profile, the frontal longer than the oral profile; front prominent, 

 about one-tliird width of head in middle (S ?), narrower at verte.x, 

 wider before, face about twice as wide ; frontal bristles in a sinorje 

 row, descending to ba.se of third antennal joint, the vertical bristles 

 longest, and, with the next pair, directed backward ; two orbital 

 bristles ( ?- ?) directed forward. Face receding, epistoma hardly 

 prominent ; facial depression fully one-half width of face, wider 

 below, moderately shallow ; facial ridges bare, except a few bristles 

 next vibrissae, constricted below ; sides of face rather wide, bare ; 

 cheeks wide, one-half eye-hight, nearly bare ; vibrissie quite strong, 

 decussate, inserted well above oral margin. Eyes bare, extending 

 three-fourths as low as oral margin. Antenme shorter than face, in- 

 serted high, second joint rather elongate, third joint about three 

 times as long as second, rather narrow ; arista long, nearly bare, 

 thickened on basal third or more, o-jointed, second joint short. Pro- 

 boscis shorter than hight of head, stout, fleshy, labella large; palpi 



TRANS. .\M. ENT. -SOC. XIX. (16) M.\Y, 189*2. 



