1909] Rohherfiies of the Genus Asihis 165 



Asilus midas Brauer. 



Entire body and legs velvety black, pulvilli on all the feet pale 

 brown, hairs and bristles everywhere black except in the male there 

 is a tuft of white hairs on each cheek below the eye. Wings rich 

 brownish yellow all over. The species cannot be confused with any 

 of the others of its subfamily. Brauer called attention to its close 

 resemblance to a species of Midas from the same locality in Mexico 

 where the type was taken. 



Specimens from New Mexico and from Oak Creek Canyon, Arizona, 

 taken in August by Dr. F. H. Snow are in the museum of the Univer- 

 sity of Kansas at Lawrence. 



Asilus nitidifacies Hine (Figs. 37 and 38). 



Black, wings slightly fumose, face just beneath the antennae shin- 

 ing black; female with conical oviduct. Length, 12 to 15 mm. 



Facial gibbosity rather prominent, and clothed with black bristles 

 above and white bristles below; face just beneath the antennae shining 

 black, otherwise clothed with gray dust, which is most pronounced 

 along the entire margins of the eyes; third segment of the antenna 

 rather narrow and a little longer than the first two together, arista 

 only about half as long as its segment, beard white; occipito-orbital 

 bristles all black. Ground color of the thorax black, but thinly cov- 

 ered with gray dust, four to six black bristles on the margin of the 

 scutellum; wings slightly fumose, almost hyaline on basal parts. 

 Femora all black, with fine white hair and black bristles; tibiae 

 and tarsi more or less dark red, approaching black in parts. Hind 

 tibiae each with three or four black bristles on the front side near the 

 middle. Abdomen black above, with gray hind borders to the seg- 

 ments, but not preceded by bristles that differ from those on the other 

 parts of the abdomen. 



A male specimen collected in the Hope Mountains of British Colum- 

 bia by R. S. Sherman, July 16, 1906, and a female collected on Van- 

 couver Island, July 2, 1903, by R. V. Harvey. Also specimens in the 

 United States National Museum from Mt. Hood, Oregon, taken by 

 H. K. Morrison. 



Asilus cacopilogus n. sp. 



Gray, wings rather narrow and hyaline. Upper forceps of the male 

 genitalia not protruding beyond the other part, which is terminated 

 by a distinct pencil of long white hairs. Length 15-18 millimeters. 



Facial gibbosity not prominent, mystax composed of numerous 

 white bristles, antennae, palpi and broboscis black, palpi and first two 

 segments of each antenna with black hair, otherwise bristles and hairs 

 of the whole head white, third antennal segment distinctly shorter 

 than the first two together, rather wide, arista fully as long as its seg- 

 ment, front and face clothed with gray dust. Thorax gray, above 

 with two brown stripes on the anterior part; legs largely black, base 

 and apex of each femur and basal half or more of each tibia reddish, 

 the posterior side of each may be partly or entirely reddish, and there 



