-228 
The Ohio Naturalist. 
[Vol. II, No. 5 , 
NEW OR LITTLE KNOWN DIPTERA. 
Jas. S. Hike. 
Nemotelus pallipes vSay. 
This species was described by Say in 1823, but so far as I am 
aware has not been recognized since. A half dozen specimens 
taken near Cincinnati, June 12, of last } T ear seem to be this 
species. There is slight variation, but some of the characters 
which Say mentioned are conspicuous ; in all, the coloration 
agrees in general and the size corresponds exactly with Say’s 
measurements. Some differences that might be mentioned are 
the coloration of the legs and ventral segments. The basal three- 
fourths of all the femora are black, and the middle and posterior 
tibiae, except at base and apex, are usually a very dark brown, 
although there is some variation in the latter case. The front 
tibiae are usually yellow, but even here a shade of brown is some- 
times present. The rufous coloration of the posterior edges of 
the middle of the ventral segments is not evident, but the whole 
venter is a uniform black. 
I am inclined to believe that this is Say’s pallipes, for it seems 
that the conspicuous, triangular, white spot above the antennae 
is a convincing character. It might be mentioned that this spot is 
genimate, being separated in the middle by a narrow, black space. 
Paciivgaster macueicorxis n. sp. 
Black ; lower part of front, and face next the eyes with an edging of sil- 
very white pollen ; antennae yellow, third joint on its inner surface with a 
conspicuous brown spot from which the species is named, also the third joint 
is transverse, the perpendicular diameter being much the longest, and the 
slender arista appears to spring from the upper front part, although techni- 
cally speaking it is apical ; as all the extension of this joint is above, the 
antennae have the appearance of being turned upward at the tips. Femora 
except at base and apex, black, remainder of legs and knobs of lialteres 
entirely pale yellow ; thorax above clothed with yellow, recumbent pile, 
giving a metalic appearance if viewed without the aid of a lens ; wings hya- 
line, venation as in Pachygaster pulchfr, stigma pale ; abdomen with short, 
white hairs. Length 2*4 mm. Habitat, Onaga, Kansas. Three female 
specimens. t 
We have three specimens procured by exchange from F. F. 
Crevecoeur. By reading the description of Zabrachia polita Coq., 
I conclude that the species resembles that insect, but the third 
vein is branched and of the nsual length. Again it suggests 
Cynipimorpha, but the scutellum is rounded at the apex. I 
would place it in Pachygaster without hesitation were it not for 
the antennae, which seem to agree with Williston’s description of 
the antennae of Cynipimorpha minuta, and are therefore quite 
different from these organs in Pachygaster pulcher. I place it 
here provisionally. 
