June, 1918] Seven Species of Asil us 321 



appearance, the uniform gray color of the body, white bristles 

 everywhere and the row of numerous white bristles on the margin 

 of the scutellum are amply sufficient to identify the species. 



Holotype male from Las Cruces, New Mexico, collected 

 by J. M. Aldrich June 1(), 1917 and deposited in his collection. 

 He procured two males and four females from the same place 

 on the same date. 



Asilus formosus n. sp. 



Body yellowish gray ijollinose all over, legs all red except each 

 femur has a large darker spot on its anterior surface, wings clear hyaline, 

 total length IS mm. 



Mystax pale yellowish, antenna:, palpi and proboscis black, beard 

 white, "postorbital bristles white, hair and bristles of the thoracic dorsum 

 black, posterior margin of the scutellum with two black bristles, legs 

 red with black bristles, each femur with a darkened patch on its anterior 

 surface. Wings clear hyaline, bristles of the abdomen pale. 



Holotype male from Clary County, Kansas, August 29, 

 1911, and another male from Stanton County, Kansas, July 29, 

 1911, both collected by F. X. Williams; in the author's collection. 

 One male from Garden City, Kansas, August, 1895, H. W. 

 Menke, collector. 



Asilus citus n. sp. 



Body dark, abdomen with alternate dark and gray bands, thorax 

 thinly gray pollinose, middle of the dorsum with two black stripes 

 very narrowly separated; femora, except base and apex, black; other- 

 wise legs red with black bristles; genitalia red. Total length 12 mm. 



Mystax white with a few black bristles above, beard white, post- 

 orbital bristles largely white, a few black ones near the vertex. Bristles 

 of the thoracic dorsum black, scutellum with two black bristles on its 

 posterior margin, wings hyaline, apex and posterior margin faintly 

 gray. 



Holotype male from Santa Rita Mountains, Arizona, taken 

 in July; F. H. Snow; in the author's collection. Fifteen males 

 and females from the same locality. 



The banded abdomen and the dark red genitalia of both 

 sexes, together with the small size suggest this species. 



Asilus compositus n. sp. 



Body slender, dark brown in color, legs yellowish brown, antennal 

 bristles about twice as long as the third segment which bears it. This 

 species is related to gracilis, which has the long antennal bristle also. 

 Total length 17 mm. 



