584 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Subgenus ERIOPTERA .Meigen. 

 1803. Erioptera Meigen; Illiger's Magazine, vol. 2, p. 262. 

 Erioptera (Erioptera) dorothea sp. n. 



Cell 1st Mo closed, but without a spur as in Hoplolahis; wings 

 spotted. 



Female, length, 4.5-4.6 mm.; wing, 5.6-6.8 mm. 



Rostrum and palpi dark brown. Antennae with the basal segments 

 brown, flagellar segments dull yellow, the apical segments brown. 

 Head gray. 



Thoracic dorsum light gray, the praescutum narrowly margined 

 with pale in front, area in front of the pseudosutural fovese pale, 

 tuberculate pits dark brown. Pleurae light gray. Halteres light 

 yellow, the knob scarsely darker. Legs with the coxae thinly dusted 

 with gray, trochanters brownish yellow, femora dull yellow, the tip 

 narrowly brown, tibiae dull brownish j'ellow, the apex browned, 

 tarsi brown. Wings light gray with brqwn markings as follows: 

 a series of six large blotches along the costal margin, the second at the 

 origin of Rs, third at Sd, fourth, large -t, at tip of Sci and on cross- 

 vein r, fifth at the tip of Ri and the last at the tip of R2; brown 

 seams along the cord, outer end of cell 1st M-i and at the ends of the 

 longitudinal veins; venation (PI. XXVI, fig. 13) : cross-vein m present 

 less than one-half as long as the outer deflection of M3. 



Abdomen grayish brown, the apical tergites and the valves of the 

 ovipositor reddish yellow; the apical margins of the sclerites pale. 



Holotype, 9 , South Fork of Eagle Creek, White Mts., N. Mex., 

 alt. 8,000 feet, August 16 (C. H. T. Townsend). 



Paratype, 9 , topotypic. 



The wing-pattern is very similar to E. (Hoplolahis) armata O. S. 

 of the Eastern States, but the venation is quite different. 



Erioptera (Erioptera) lucia sp. n. 



Cell 1st M2 closed and very small; pleurites of the male hypo- 

 pygium bearing a triangular flattened lobe at the tip. 



Male, length, 4.5 mm.; wing, 6 mm. 



Female, length, 4.5 mm.; wing, 6.3 mm. 



Rostrum light yellow, palpi brown. Antennae light yellow, the 

 flagellum broken. Head light gray. 



Thoracic dorsum yellow without darker markings. Pleurae 

 yellow, the ventral sclerites darker and with a sparse grayish bloom. 

 Halteres light yellow. Legs, coxae and trochanters dull yellow, 

 femora and tibiae brownish yellow, tarsi brown. Wings hyaline or 

 nearly so, the veins brown; venation (PI. XXVL fig. 14, which shows 



