208 
1. THyreocorts Schr. 
I have before me several specimens of the genotype of Thyreocoris, 
which, as shown in synopsis in this paper, differs from all the other 
groups now listed under the same generic name. 
2. CYDNOIDES, gen. n. 
Differs from all other genera in the group in having the lateral 
margins of pronotum and of the greater portion of chitinized parts of 
wings fringed with long hairs; the femora of at least the fore and hind 
legs have bristly hairs on their antero-ventral surface but, no stout spines ; 
the chitinized portion of wings is broad to apex, the tip obtuse. 
Genotype, Corimelaena ciliata Uhler. 
Besides the genotype there are in our collections two other species, 
renormata Uhler and sayi V. D.;. obtusa Uhler belongs to this genus, but 
I have not seen it. 
Kery TO SPECIES 
Entirely black species with bronzy tinge, the surface of scutellum subopaque; 
mid femur with a few very short antero-ventral spines.............. ciliatus. 
At least a portion of the chitinized part of wings yellowish white; mid femur 
with a few moderately long bristly hairs on antero-ventral surface. 
Head distinctly flattened on anterior half of dorsum; pronotum black; only 
the base of chitinized portion of wings white.................- renormatus. 
Head convex on dorsum; pronotum black with a brassy or greenish tinge, the 
lateral and posterior margins yellowish white; all of chitinized portions of 
Wings - Whibey (Lex) in ss stapayes aisle ete te re anes cteicta ipa eucusie tele seeps s Kata pe nae sayi. 
Cypnores crLiatus ( Uhl.) 
Corimelaena ciliata Uhler, Proc. Ent. Soc. Phil., Vol. 2, p. 156. 1863. 
Colorado, Kansas, Florida (V.D.). There is in Illinois a character- 
istic and very common species of the sand areas, taken at Bishop, Topeka, 
Havana, Meredosia, and Arenzville June 7 to October 29. In August it 
was often common on the stems of various plants, but its most curious 
habit was that of burrowing in the loose drifting sand about the roots of 
tufts of grass. Where there was no sign of individuals above ground, a 
single turn of the finger in the sand around a grass plant would frequently 
bring two or three to the surface. Nymphs were taken at Havana Sep- 
tember 20, 1911. 
Its finely wrinkled and punctate surface, make it very easily | recog- 
nizable. 
CypNofpEs RENORMATUS (Uhl:) 
Corimelaena renormata Uhler, Hemip. Col., Bul. 31. Col. Agr. Exper. Sta., 
p. 11. 1895. : 
Colorado (V.D.). One male example from northern Illinois (S. H. 
Peabody). 
= 
