314 Annals Entomological Society of America [Vol. VIII, 
hairs, each of which is situated in a shallow puncture. Legs normal in 
form. Venation as in Figure 6 except that the third vein is more 
elongate and furcate. 
Length, 2.5 mm. 
Female.—Differs from the male in having the antenne and the iegs, 
especially the tarsi, paler, and the halteres yellow. 
Eyes separated by one-third the head-width; frons with three dis- 
tinct longitudinal grooves, the central one deep and broad, the lateral 
pair shallow; ocellar region humplike; antennz noticeably larger than 
in male; face and frons, in profile, receding at about the same angle 
from base of antenna; posterior orbits narrow; profile as in Figure 14. 
In other respects as the male. 
Length, 3.5 mm. 
Type locality, Lafayette, Ind., July 18, 1913 (J. M. Aldrich). 
Allotype locality, Victoria, Texas, April 9, 1914, Bishopp: 
No. 3266; submitted by Prof. J. M. Aldrich from material 
belonging to the U.S. Bureau of Entomology. 
I have named the genus in honor of Mr. C. W. Johnson, 
who has done much good work on Stratiomyiide, as well as on 
other families, and the species in honor of the collector, whose 
efforts resulted in my obtaining for examination the paratype 
material of Pachygaster from the Loew collection in Cambridge, 
Mass. 
Nothing is known of the early stages of this species. 
Pachygaster Mecigen.* 
The genus Pachygaster has as its type atra Meigen, and as at 
present limited includes one North American species, pulcher 
Loew. The eyes of the male are contiguous above for a con- 
siderable distance, the antenne are short, the third joint disc- 
like, the scutellum is without a distinct rim, unspined, and not 
noticeably swollen, and the third vein is furcate. The female 
bears a closer resemblance to that of Zabrachia than to Neo- 
pachygaster, but the furcate third vein readily separates it 
from the former, while the difference in the profile of the head 
separates it from the latter. The structure of the head of 
pulcher differs considerably from that of atva, as is shown by 
Verrall’s figure, but I consider the difference insufficient to 
warrant their generic separation. 
*Tllig. Mag., Vol. 2, 1803, p. 266. 
