104 PROCEEDINGS OF THE NATIONAL MUSEUM. 



eithor .side of middle of facial depression, hairs of face and of chi^eks 

 white; niesonotuni and scutellum opaque, bluish gra}^ pruinose, the 

 hairs black, a stripe of white ones above each wing, those of the pleura 

 also white except a cluster of black ones near the upper edge; dor- 

 sum of first three abdominal segments polished, the sides, venter, and 

 entire fourth segment densely gray pruinose but leaving several, 

 mostly circular, polished spots; on l)ases of the second and third seg- 

 ments the gra}" pruinosity encroaches considerably on the dorsum, 

 hairs of abdomen black; basal half of femora and tibiee largely, also 

 extreme apices of tibia^, grayish pruinose, hairs black, a few white 

 ones on upper side of middle femora and many on posterior side of 

 front ones; wings and calj'pteres dark brown; length, 18 mm.; width 

 of vertex, 3 mm.; width of head. 8 mm. A female specimen collected 

 by Dr. A. Duges. 



Habitat. — Guanajuato, Mexico. 



Tyjje.—Cvit. No. 61l»9, U.S.N.M.^ 



Family TACHINID.E. 



MEIGENIELLA, new genus. 



Near Onjptomelgenla Init the first vein ])eyond apex of auxiliary is 

 distinctly bristl}^ and the vibrissaj are nearer to the anterior edge of 

 the oral margin. Head at vibrisste much shorter than at base of 

 antenna\ ocellar bristles directed obliquely forward, frontals in a 

 single row each side, descending to base of third antennal joint, sides 

 of face each about one-third as wide as the median depression, bearing 

 a few short hairs, antenna^ four-lifths as long as the face, the third 

 joint nearly four times as long as the second, arista thickened on the 

 basal fourth, the penultimate joint slightly longer than broad, facial 

 ridges bristly on the lowest fourth, cheeks about one-fourth as wide 

 as the eye height, eyes bare, proboscis short and robust, palpi clavate, 

 well developed; first posterior cell open, ending at the wnng tip, l)end 

 of fourth vein rounded, without an appendage, hind crossvein much 

 nearer the bend than t6 the small crossvein, last section of tifth vein 

 less than one-third as long as the preceding section; hind tibia3 not 

 ciliate with bristles. T^-pe, the following species: 



MEIGENIELLA HINEL new species. 



Head yellow, occiput and sides of front black, l)luish gray pruinose, 

 frontal vitta dark brown, face whitish pruinose, antenna? and base of 



' Caterehra lepivora Coquillett. Suspecting that the types of this species, a male and 

 a female, were injured by "greasing," they were immersed for twenty-four hours in 

 chloroform, and this had the effect of restoring most of the normal markings. The 

 head of the male, instead of being "destitute of light-colored pollen," as described, 

 has spots of this kind almost as in the male of C. americana, while the pollen of the 

 face and cheeks of the female is whitish instead of being brownish, as stated in the 

 original description. 



