g PSYCHE [Oct. -Dec. 



7. Nemotelus carneus Walker. 



7V^;«^^e//^5 c«;v/e«5 Walker, Barnston'sMSS, List dipt, ins., 3, p. 521- W 



ir,;„«/,. Black, antennae black, legs yellowish, femora black, tibiae striped w,th black, 



wings whitish. {Translation.) 



Body black, shining; head a little narrower than the chest; eyes piceous; mouth and 



feelers black; scutcheon unarmed; abdomen much broader, but not longer than the chest; 



legs tawny; hips and thighs black ; tips of thighs tawny; shanks striped with black; wings 



whitish ; wing-ribs tawny ; veins and poisers pale yellow. 



Length of body i^ lines (3 mm.) of the wings 3 lines. 



St. Martin's Falls, Albany River, Hudson Bay, (G. Barnston). (■' 



8. Nemotelus pallipes Say. 



Nemotelus faUtpes Say, Journ. acad. nat. sci. Phila., vol. 3, 29. (0 

 Ed. Lee, vol. 2, p. 52. (2) 

 Wiedemann, Auss. zweifl. ins., ii, 45, 2. (3) 

 Male. Greenish black, thorax tinged with green ; nervures white. 



Rostelliform process blued black; polished; antennae brown, at the base of the rostelli- 

 f orm process ; front with a triangular white spot above the antennae ; thorax punctured, a 

 testaceous line before the wings and another each side on basal edge; poisers and scale pure 

 • yellowish white; costal nervure whitish ; feet yellowish, base of thighs and middle ot pos- 

 terior edges of the segments of the venter rufous. 



Length §js inch (3-8 '^i"'')- 

 Pennsylvania, (''--s' 



9. Nemotelus polyposus Say. 



Nemotelus poh'posus Say, Journ. acad. nat. sci. Phila., vol. 6. 160. (■) 

 Ed. Lee, vol. 2, 356. W 



Williston, Biol. Centr.-Amer. Dipt. Suppl., 251. (3) 

 Male. Black, feet yellowish; thighs black at base. 



Body black, with slight tinge of purplish, polished; wings white; costal and basal ner- 

 yures yellowish; poisers white; feet honey yellow; thighs except at tip black; tarsi with 

 the terminal joint black; posterior tibiae black in the middle; venter immaculate. 



Length not more than ^^^r inch (3.7 mm.). 

 Mexico (''2); Mexico City. (3) 



