224 



much shorter, single row; fore and mid tibiae with a series 

 of short setulae on the postero-dorsal surface from base to 

 apex; hind tibia with two such rows, one on the antero- 

 dorsal and one on the postero-dorsal surface ; hind tarsus 

 with the basal joint about two thirds as long as the tibia 

 and distinctly longer than the remaining joints together; 

 claws long, subequal, each Avith a sub-basal tooth (PI. XIII, 

 Fig. 5). Venation similar to that of longipennis, but the 

 third vein extends but slightly more than six sevenths of 



the distance to the tip of the wing. Length, 5 mm 



scliwarzi Coquillett. 



This species, originally described from specimens obtained from 

 Texas, is represented in the collection here by one specimen 

 from Algonquin (Nason), and by two specimens from 

 Urbana, May and June, 1887, and one specimen from 

 Champaign, July, 1887 (C. A. Hart). The last three speci- 

 mens were taken at electric lights. 



— Mesonotum gray pollinose, M'ith distinct brown spots on disc. 



{Longipennis has the bristles above the wing-base very much less 

 numerous than scliwarzi, and confined to a space just above the 

 anterior edge of the wing. I do not know how this character 



may be in slossonce as I have not seen the species) 13 



13. Apex of fore femur yellow, the central portion blackened (See No. 

 8) longipennis Loew. 



— Apex of fore femur blackened. 



Female. — Mesonotum gray pruinose, with a transverse row of 

 four brown spots near the middle and another a short 

 distance in front of the outer spots. Black, the base of 

 antennae, stems of halteres, and the legs yellow ; coxae, apices 

 of fore and mid femora and their tibiae, the hind femora and 

 their tibiae, also the apices of the joints of all tarsi, dark 

 brown. Scutellum reddish brown; pleurae gray pruinose; 

 abdomen polished. Femora rather slender, the fore pair 

 slightly thickened and spined on nearly the entire length of 

 their under surface ; mid and hind femora with 3-4 spines 

 on their apical halves ; first joint of tarsi longer than the 

 next three; last joint of tarsi spined below, claws large. 

 Wings hyaline, third vein five sixths of the wing length; 

 fourth vein forks slightly before the cross vein. Length, 

 4 mm. (N. H.) slossonce Coquillett. 



NOTES ON THE EAREY STAGES OF TAEPOMYIA 



The eggs of Palpoiuyia longipennis Loew are laid in groups on 

 leaves of plants in the water and covered with a gelatinous substance. 

 Those that were found were on submerged leaves, but whether the 



