ZooL— Vol. II.] WHEELER— DOLICHOPODID^. 65 



juncture of the first vein with the costa. The pulvilH are 

 enlarged. The face of the female is scarcely wider than 

 that of the male, narrowed above and covered with brown- 

 ish ochraceous dust. The halteres are black in both sexes. 



65. Hydrophorus philombrius Wheeler. 



Plate IV, Figs. 126 and 127. 



This species was described^ from a male specimen taken 

 in Wisconsin. Another male recently received from Jack- 

 sonville, Texas (Nov. 20, 1895), enables me to add the fol- 

 lowing to my former description: — 



Cheeks broad, flap-shaped, dependent, covered with gray dust. Fore 

 femora with two rows of pointed black spines on the lower side; the upper 

 row running the full length of the femur and consisting of short spines, the 

 lower row consisting of four or five graduated spines near the base, the more 

 distal ones being unusually long. Tip of fore tibia drawn out into a distinct 

 blunt projection, the spines on which are rather small, like the other spines in 

 the series on the lower surface of the fore tibia. The white pulvilli and 

 empodia distinctly larger than they are in the male of H. agalma. Veins of 

 the wings black nearly to their roots; costa somewhat thickened beyond the 

 tip of the first vein, which ends near the middle of the wing. Hypopygial 

 appendages projecting more than in other North American species; a slender 

 anterior pair with rounded tips project forwards; the posterior appendages 

 are short, thick and blunt and covered with short white hairs. 



H. philombrius is readily distinguished from the other 



species by the four distinct metallic crimson vittae on the 



thorax, the unusually long spines on the base of the fore 



femur, the blunt elongation of the tip of the fore tibia, and 



the well developed and projecting hypopygial appendages. 



66. Hydrophorus eldoradensis, sp. nov. 



Plate IV, Fie. 125. 



Male. Length 2.5-3 mm.; length of wing 4.5-5 mm. Proboscis and palpi 

 fuscous. Face thickly covered with silvery white dust. Antennae of the 

 usual form, black; arista short, black, with a pale tip. Front dull olive green 

 or brown, covered with white dust, thickest along the orbits. Occiput bluish 

 metallic green dusted with white. Cheeks broad, lobe-shaped, dependent, 

 thickly covered with white dust. Body and legs metallic blue-green covered 

 with a thick coating of snow-white dust. Disc of thorax cupreous, with a 



iPsyche, July, i8go, p. 378. 



(5) Sept. 21, 1899. 



