136 PROCEEDINGS OF THE NATIONAL MVSEUAI. vol.49. 



Abdomen elongate, reddish at base, gradually becoming black 

 near tip, opaque throughout, with pale pile. 



Legs yellow, femora more or less reddish or brown; tarsi some- 

 times yellow to the tip, sometimes more or less infuscated on apical 

 segments; middle coxa with a striking long black curved thorn as in 

 securifera, but even larger, composed of at least a dozen bristles 

 closely united, and of jet black color, contrasting 

 strongly with the rest of the coloration. 



Wing rather uniform yellow, veins yellow, stigma 

 dark yellow. 



Length, 7.6 mm. 



Three specimens, Palo Alto, California, July 5, 



Fig. S.— Outer SIDE OF ,, ^ , , ' _^_ .^ .^ , , 



LEFT ANTENNA OF s. 1895; CQllcctcd by R. W. Doauc. (lype returned 

 PiLosA,MALE. X20. to Prof cssor Doauc) . 

 I strongly suspect that the specimens have been faded from pro- 

 longed exposure to light, and the colors are not quite as they would 

 be in fresh specimens; it may even be that the reddish pile will be 

 found to be normally black. In any event, the species will be readily 

 recognized by the pale antennae with concave third joint, thorn on 

 middle coxa, etc. 



The female is unlaiown. 



SYMPHOROMYIA PLAGENS Williston. 



Symphoromyia plagens Williston, Trans. Amer. Ent. See, vol. 13, 1886, p. 287, 

 male. Washington; Mount Hood, Oregon. ^ — Bigot, Bull. Soc. Zool. France, 

 vol. 12, 1887, p. 12, female (as male, latipalpis); p. 13, male (picticomw). 

 Washington. 

 Reported from Ormsby County, Nevada (Baker) ; Beulah, New Mexico (Skin- 

 ner); and British Columbia (Hine). 



Male. — Black, including first two joints of antennae, arista, palpi, 

 knobs of halteres, and femora; third joint of antenna orange yellow; 

 tibiae and base of tarsi pale yellow. Eyes barely contiguous in 

 the middle of the front, front destitute of hairs except in the ocellar 

 triangle and behind it, above the antennae whitish pollinose and 

 bare; first joint of antenna long (double the two following combined), 

 moderately thickened, cinereous pollinose, with dense and long black 

 hair which is slightly longer above; second joint concolorous, very 

 short; third joint small, bare, about the same in vertical diameter 

 as the first joint, orange yellow with a blackish arista, below which 

 it is convex; sides of face hairy about up to the middle (not shown 

 in the figure, as the hairs are sparse and delicate); palpi cylin- 

 drical, long, with bushy black hair; labella small, proboscis shorter 

 than the palpi; occiput not much protuberant, above with a row of 

 long, erect black hairs, on the lower part the hair is slightly mixed 

 with paler. Thorax cinereous opaque above, denser in front, the 

 hairs black except about the humeri; scutellum concolorous; pleura 



