114 PROCEEDINGS OF THE NATIONAL MUSEUM YOu. 97 
yellow line on each side, passing over the origin of the wings .. . 
abdomen pale yellow, tips fuscous.” The coloration of the proboscis 
agrees with that of Leskiomima depilis and sharply disagrees with 
that of Genea aurea. Under low magnification the thorax of L. depzlis 
might well be seen as Say described it, and the abdomen tends to be 
darkened at the apex; in G. aurea, on the other hand, the heavily dusted 
thorax, with its paler ground color, would hardly appear that way, 
and the abdomen is yellow, with median posterior spots on the individ- 
ual segments. Moreover, in LZ. depilis the palpi are decidedly elongated 
in comparison with those of Dexia vertebrata Say (Zelia vertebrata 
(Say) ) described in the same paper as D. analis. At best, some ele- 
ment of doubt concerning the identity of Say’s species remains, and 
since this can never be resolved by examination of a type specimen, 
it is best to let Coquillett’s species, of the identity of which we can be 
positive, remain. 
GENEA TRIFARIA (Wiedemann) 
Stomorys trifaria WiEDEMANN, Analecta Ent., p. 41, 1824; Aussereuropaische 
zweifliigelige Insecten, vol. 1, pp. 250-251, 1830. 
Genea maculiventris RoNDANI. Nuovi Aun. Sci. Nat. Bologna, ser. 3, vol. 2, 
pp. 173-174, 1850.—AtpricH, Proc. U. S. Nat. Mus., vol. 74, p. 18, 1929.— 
TOWNSEND, Rev. Ent., vol. 1, p. 90, 19381 (synonymy). 
Genea trifaria (Wiedemann) TOWNSEND, Rev. Ent., vol. 1, p. 90, 1931. 
Length, 6 to 7 mm. Head in ground color yellow except lateral 
occipital plates, which are blackish on approximately upper half; 
pollen brownish on frontalia, yellowish on larger part of parafrontals, 
and whitish with a yellowish tinge elsewhere. Parafrontals bare or 
with a very few black hairs; pile of occiput concolorous with ground 
color, the pale pile being of fine texture. Outer verticals weak in male. 
Antenna yellow, third segment infuscated except on basal two-fifths 
ventrally and inwardly; arista yellow, darkened on thinner part, the 
hairs concolorous. Haustellum 1.1 to 1.3 head height, cylindrical on 
basal half, then suddenly constricted, the apical part slightly though 
distinctly bowed backward; color yellow, apical half blackish above, 
the setulae on that part arising from pigmented pores. Palpus 1.7 
‘to 1.9 length of third antennal segment, as robust as haustellum in 
female, somewhat more slender in male. 
Mesonotum, except humeri and sides, and certain pleural areas of 
variable extent blackish in ground color; pollen of mesonotum, humeri, 
and uppermost parts of pleura yellowish, that of remaining parts of 
pleura whitish; inner vitta of mesonotum as wide as diameter of a 
trichopore of a dorsocentral bristle. Pile of mesonotum, scutellum, 
and upper parts of humeri black, of lower parts of humeri and of 
pleura whitish. Legs yellow, tarsi blackish; coxae whitish pollinose, 
