213 
a less pronounced central projection than in harti; female genital plates 
as in harti; hind tibia frequently with 1 or 2 weak postero-dorsal 
ROUUN LC Ce ter eat ettcsinictara aed ctecceay opi tavcaete Syaitie ei shasta re valas< shy ocevols jurors ersle 0.8% agrella. 
Scutellum distinctly longer than broad, with a more or less distinct impunc- 
tate longitudinal central line; yellow margin of wing extending mesad 
of cubitus; female genital plates similar to those of harti but more 
broadly punctate; male hypopygial plate similar to that of pulicaria but 
regularly punctate on entire surface and not so much reflexed laterally; 
anterior abdominal spiracular puncture in lateral carina except in basal 
Serres: (Col ,Utab, Dak., ATiz.,,Ore.. MEXICO)! Fe . 2. sp ciieieane ces mene extensa. 
CoRIMELAENA ANTHRACINA Uhler 
Corimelaena anthracina Uhler, Bul. U. S. Geol. and Geogr. Surv. Terr., Vol. 
1, No. 5, sec. ser., p. 270. 1876. 
Despite the black color of this species it belongs to Corimelaena and 
is separable from its allies as indicated in key. It has not been taken in 
Illinois as far as our records show, but we have a specimen labeled “L. 
Sup.” (Lake Superior), and it is possible that it occurs in the northern 
part of the state. 
CORIMELAENA POLITA, Sp. 11. 
Female—Similar in color to lateralis, the two segments anterior to 
genital plates with pale yellow border. 
Structurally similar to lateralis, differing as follows: the head is more 
narrowed anteriorly, the sides in front of eyes are more noticeably sin- 
uated, the tylus is slightly longer than the juga, its stirface convex ante- 
riorly, glossy and almost impunctate; dorsum of pronotum with large 
punctures on lateral margins, in transverse depression, and on disc behind 
the latter, otherwise with small subobsolete punctures. Scutellum more 
sparsely punctate than in lateralis. Genital plates as in Figure 65, Plate 
XIX. For other details see key. 
Length, 4 mm. 
Type, Brownsville, Tex., July 10, 1908. 
I have no males of this species before me. 
CoRIMELAENA LATERALIS Fabr. 
Tetyra lateralis Fabricius, Syst. Rhyng., p. 142. 1803. 
Widely distributed but usually not abundant; not as common as puli- 
caria. N. J., Md., D. C., Ohio, Okl., Tex. (V. D.); Brownsville, Tex. 
(Hart) ; Chicago, Algonquin, Rock Island (N. Ill.) ; Arenzville, Homer, 
and Muncie (C. Ill.) ; Grand Tower, Carbondale, Makanda, and Pulaski 
(S. Ill.). April 24 to September 11. ; 
The chitinized portions of wings have an even, narrow ivory-white 
border. In seven of the specimens this border is widely interrupted at 
middle and nearly obsolete anteriorly, only the posterior fourth remaining 
evident. 
