Sept. igoo.l DOANE: NORTH AMERICAN TlPULID^. 183 



what darker than that of the femora ; tarsi brownish ahiiost blackish toward the tip ; 

 wings hyaline, stigma with a faint brownish tinge ; tip of the auxiliary vein some dis- 

 tance before the origin of the prcefurca, the distance being a little more than the 

 length of the prsefurca ; distance of the subcostal vein from the tip of the auxiliary 

 vein is greater than the length of the prtefurca ; no marginal cross vein perceptible ; 

 discal cell open, coalescing with the third posterior cell ; first posterior cell distinctly 

 narrowed at its outer end ; veins brownish, those at the base of the submarginal, the 

 first and the fourth posterior cells being much darker. Length, female 4.5 mm. ; 

 wing 5 mm. 



Habitat: Pullman, Wash., one female. (Piper.) Type no. 104. 

 .Wash. Agric. Coll. & S. of S. 



Dicranomyia citrina, sp. nov. (PI. VII, fig. 3.) 



Reddish yellow ; head and antennas somewhat lighter ; antennte infuscated to- 

 ward tip ; rostrum prolonged, two-thirds as long as head ; thorax wholly reddish yel- 

 low ; halteres pale, knob infuscated ; legs light tawny yellow ; tarsi slightly darker at 

 tip ; abdomen light tawny yellow ; tip of ovipositor more reddish yellow ; male gen- 

 italia large ; wings hyaline, stigma pale ; tip of auxiliary vein opposite the origin of 

 the prsefurca ; subcostal cross vein only a short distance from the tip of the auxiliary- 

 vein ; marginal cross vein at the tip of the first longitudinal vein ; veins yellowish ; 

 discal cell closed. Length, female 7 mm.; wing 7 mm. 



Habitat: Wawawai, Wash., one female. (Doane. ) Type no. 

 105. Wash. Agric. Coll. & S. of S. 



Resembles D. pudica O. S. but larger ; wings broader, veins more 

 yellowish and tip of auxiliary vein opposite instead of slightly anterior 

 to the origin of the prjefurca. 



Dicranomyia helva, sp. nov. (PI. VII, fig. 4.) 



Yellow ; head yellow ; brownish above ; rostrum yellow ; antennae brown ; first 

 segment of palpi yellow, others brown ; thorax yellow with a brownish tinge, the 

 single median brown stripe but faintly indicated back of the suture ; pleurte somewhat 

 lighter yellow ; halteres rather long, infuscated, lighter toward base ; legs yellow, 

 last segment of tarsi infuscated ; abdomen brownish yellow ; ovipositor lighter yellow ; 

 wings hyaline, stigma pale ; tip of auxiliary vein opposite origin of pn^efurca ; distance 

 of the subcostal cross vein from the tip of the auxiliary vein equal to a little more 

 than the length of the stigma ; veins yellowish ; discal cell closed. Length, female 

 6 mm.; wing 6.5 mm. 



Habitat: Colorado, one female. (Morrison.) Type no. 106. 

 Wash. Agric. Coll. & S. of S. 



Dicranomyia isabellina, sp. nov. (PI. VII, fig. 5.) 



Ochraceous ; head yellowish brown ; rostrum yellowish ; palpi and antennae 

 yellowLsh, the latter somewhat infuscated ; thorax ochraceous ; halteres pale, knob 

 infuscated ; abdomen brownish yellow, edge darker brown ; ovipositor yellowish ; 



