297 



continued at middle of disc — being represented on the flattened pos- 

 terior half by a few scattered dots — and a row of confluent dots on 

 either side of this median series, forming a narrow line which skirts 

 the depressed posterior area laterally, and there are also, between this 

 line and the lateral margin, many irregularly arranged dots, some iso- 

 lated and others forming confluent groups; scutellum brown. Abdo- 

 men opaque brown, the surface with slight gray prninescence. Legs 

 obscurely yellowish, with ill-defined brownish suffusion on femora and 

 tibiae. Wings clear, costal, first, and third veins brown, the others vit- 

 reous. Halteres yellowish white. 



Eyes separated; antenna longer than head and thorax together, 

 apical five joints slightly elongated; antepenultimate joint of palpi 

 much swollen. Disc of mesonotum with short yellow hairs, each sit- 

 uated in one of the brown dots; scutellum with about 6 hairs. Legs 

 nr)rmal in strength and armature. Third vein ends slightly beyond 

 middle of wing, its apex and apex of costa swollen; first vein very 

 close to third, the connecting vein broad ; in other respects, except the 

 maculation, as sangiiisiigus. 



Length, i mm. 



Tvpe locaHtv, Urbana. Ill, October 2-3, 19 14. at light (C. A. Hart 

 and J. R. Malloch). 



2. CUUCOIDES HIEROGLYPHICUS, n. Sp. 



Female. — Dift'ers from multipiinctatiis in the thoracic ornamenta- 

 tion. The disc of the thorax is marked with large brown spots, as 

 shown in Figure 3, Plate XXIII, and much resembles in this respect 

 crepuscularis, from which the entirely unspotted wings readily sep- 

 arate it. 



The eyes are very narrowly separated. In other respects the spe- 

 cies agrees closely in structure with miiltipunctatiis. 



Length, 1-1.25 mm. 



Type localitv. Ash Creek, Graham Mountain, Arizona, altitude 

 3200 feet. May '30, 1914 (E. G. Holt). Type in collection of U. S. 

 Bureau of Biological Survey. Paratypes in collection of this Labora- 

 tory. 



3. CuucoiDES VARiPENNis Coquillett 

 Ceraiopogon varipennis Coquillett, Proe. U. S. Nat, Mns., 1902, Vol. 25, p. 94. 



Larva. — Not described. Aquatic. Vermiform. 



Pupa. — Length, 3.5 mm. Brownish yellow. Thoracic respiratory 

 organs long and slender, their length at least equal to distance from 

 anterior extremitv of head to wing-base, shaped as in Figure 17, Plate 



