AMERICAN DIPTERA. 299 



fuscous. Hypopysrium concolorous, small, clavate, closed, the middle lamellse 

 ascending, oblong-ovate, with very short pubescence. Coxse pale testaceous, 

 black pilose. Legs long, slender, testaceous, black pilose ; apex of the tibiae fus- 

 cous; anterior tarsi black, except the base; the last joint of the posterior tarsi 

 black. Halteres yellowish. Wings long, subhyaline, cinerascent, faintly tinged 

 with fuscous, stigma obsolete, veins fuscous. 3.5 mm. 



District of Columbia (Osten Sacken). 



Empis abcirus Walker. 

 List Dipt. Ins., iii, p. 494. 



Male. — Fulvous, hoary. Head hoary, thinly clothed beneath with black hairs; 

 hypostoma black ; lip tawny for more than half its length, black thence to the 

 tip, nearly as long as the body ; eyes bright red ; feelers black ; first and second 

 joints dark tawny; chest and breast hoary with a tawny tinge; chest adorned 

 with four gray stripes, between which are rows of short black bristles; the 

 hinder border of the chest is beset with longer black bristles; abdomen black 

 shining; legs tawny, beset with short black hairs and bristles; hips black; feet 

 piceous towards the tips; foot-cushions and claws tawny ; wings colorless; wing- 

 ribs and poisers bright tawny ; veins piceous, tawny towards the base and along 

 the fore borders. 5 mm. 



Georgia (Abbot). 



Empis eiidaniidas Walker. 

 List Dipt. Ins., iii, p. 493. 



Male. — Fulvous, head cinereous, narrower than the thorax, clothed with short 

 black hairs; eyes red ; mouth tawny, with a black tip, as long as the chest; 

 feelers tawny, black towards their tips, longer than the head ; chest paler on 

 each side, beset with short black hairs, adorned on the back with four gray 

 stripes; abdomen fulvous, apically black ; legs tawny, clothed with short black 

 hairs; hips and trochanters gray; knees black ; tips of the feet piceous; a short 

 black stripe on each of the four front thighs; wings nearly colorless, tawny 

 towards the base. 6 mm. 



Enipis amytis Walker. * 



List Dipt. Ins., iii, p. 493. 



Male. — Fulvous. Head black, much narrower than the chest; eyes dark red ; 

 mouth tawny, with a black tip, much shorter than the chest; feelers black; 

 chest and breast tawny; disc of the former black; abdomen black, dull, tawny 

 along each side; legs tawny, clothed with short black hairs; knees and tips of 

 feet black ; wings colorless ; wing-ribs and poisers tawny; veins piceous. tawny 

 towards the base. 5 mm. 



New York. 



Empis olliiis Walker. 

 List Dipt. Ins., iii, p. 493. 



Female. — Fulvous. Head gray, thinly coated beneath with black hairs; hypo- 

 stoma black, shining; lip dark tawny, piceous at the tip, shorter than the body ; 

 eyes bright red ; feelers black ; chest and breast dull tawny ; chest adorned with 

 four brown stripes, between which are rows of short black bristles; the hinder 



TRANS. AM. ENT. SOC, XXVIII. AUGUST, 1902. 



