142 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



ing to black near the tip; beard pale; behind the compound eyes 

 above is a considerable fringe of erect black hairs, about 15 each side 

 of the vertical triangle; proboscis short, labella fleshy. 



Thorax cinereous, with three well-developed dark-brown stripes, 

 the middle one three or four times as wide as the gray space sepa- 

 rating it from the lateral stripe; pile blackish, but much of it pale in 

 some lights; pleurae cinereous, with pale pile above, that on meso- 

 pleura kinky; scutellum cinereous, brownish on disk, with long 

 coarse quite black hair; halteres with brownish-yellow stem and 

 dark-brown knob. Abdomen wholly densely pollinose except where 

 the segments are a trifle pulled apart, more yellowish in color than 

 the thorax, pile nearly all yellowish-white. Femora black, the tips 

 narrowly yellow; tibiae yellow, but little darkened toward the tips; 

 anterior tarsi a little yellow at base only; coxae black, front and hind 

 ones with only pale hair, middle with black hair but no thornlike 

 group of setae. Wings evenly subinfuscated, veins brown, stigma 

 brown. 



Length, 8 mm. 



Besides the types of Bigot and Coquillett, a single specimen each, 

 and both of them males from Colorado, the only material I have seen 

 of this species is a set of four males collected by Osten Sacken at 

 Webber Lake, California, July 27, 1876. The female must be very 

 similar to that which I have described under montana, new species. 



SYMPHOROMYIA TRUCIS Coquillett. 



Symphoromyia truds Coquillett, Journ. N. Y. Ent. Soc, vol. 2, 1894, p. 55, male. 



Southern California. 



The entire original description by Coquillett is as follows: 



Male. — Black, including the palpi and knob of halteres, only the tibiae sometimes 

 yellowish. Pile of head and thorax largely black, that of the abdomen yellowish- 

 white. Face bare; proboscis retractile, scarcely one-half as long as the palpi. Head 

 and body opaque, gray pollinose, thorax marked with three lighter vittae. Hind 

 coxae produced near the apex in front in the form of a rounded knob ; pile of middle 

 coxae short, not forming pencils. Wings grayish, stigma brown. Length. 7 mm. 

 Southern California, in April and May. 



I can add from examining the types that they are rather dirty 

 specimens ; the one with the yellowish tibiae is teneral, and I should 

 say that dark brown or black is the normal color of the tibiae; the 

 mesonotum has such wide blackish vittae that the intervening gray 

 color is a narrow line; the middle stripe of blackish is divided by a 

 gray line in the best-preserved specimen, so that the mesonotum 

 might be called blackish, with three gray lines and gray edges. I 

 had no males that would match this species. 



