173 
Osteole large, the auricle dark and well-developed; pronotum either broadly 
rounded at posterior lateral angles or rather sharply angulated, usually 
with small denticles; the paired plates at base of genital segments of female 
slightly convex or flat, their posterior margins not declivitous. 
Osteole not surrounded laterally by pale yellowish color; apical dorsal segment 
of female conspicuously emarginate posteriorly; large species, females 
averaging 18 mm. in length; color of dorsum as in the other species of the 
genus but there is a paler area at apex of scutellum and on base of each 
elytron that is not so evident in any other species before me; lateral margin 
of metathorax narrowly pale yellow from base to apex............-. cariosa. 
Osteole surrounded laterally by pale yellowish color; apical dorsal segment 
of abdomen of female transverse or slightly emarginate; lateral margins of 
WELAUNOTAK’ TOL MATL O WAY DAG tore cicjele cine sleveiaieicies ciple ayelalaye tele ole j-pustulata. 
[The above keys and the record of B. cariosa in text are by the editor. 
Mr. Hart’s key to imagines included only arborea and 4-pustulata which were 
separated on entirely different characters. ] 
BROCHYMENA ARBOREA Say 
Pentatoma arborea Say, Jour. Acad. Nat. Sci. Phil., Vol. 4, p. 311. 1825. 
This also is a widely distributed species, ranging from Canada into 
Mexico, and over nearly the whole of the United States. Its habits are 
very similar to those of the preceding species, but it seems to be most 
abundant later in the season. Examples determined by H. E. Summers 
were reported to us as spearing on their beaks larvae of the Colorado 
potato-beetle. Beach, Urbana, Twin Grove; Centralia, Dubois, Metropo- 
lis; March 18, May 9, June 10, July 3 (on apple), August 19, September 
6-14 (on apple), 20, 22, November 7. G. H. French reported to us that 
he found Brochymena in all stages on willow, apple, and grape, and also 
took adults on peach and pear, his localities being Centralia, Carbondale, 
Makanda, Cobden, and Villa Ridge, and the dates August 26, 28, and 
September 5, 12, 26. 
Riopavienk CARIOSA Stal 
Brochymena cariosa Stal, Enum. Hemip., Pt. 2, p. 17. 1872. 
One female which I found in the series of 4-pustulata is undoubtedly 
cariosa, agreeing in every respect with Texan examples so named by 
Mr. Hart. 
Locality, Whitesville, Saline Co., Ill., June 29, 1905. 
BROCHYMENA QUADRIPUSTULATA Fabr. 
Cimez quadripustulata Fabricius, Ent. Syst., sec. ed., Vol. 4, p. 100. 1794. 
This is our commonest species. It ranges from the eastern United 
States to California and is also found in Canada. It occurs in all sec- 
tions of Illinois, but is perhaps commonest in the southern part. It rests 
on the branches of trees, protected by its color. We have found it on elm 
and grape, but it has been noted especially in orchards, on apple and 
cherry trees. Sanderson has recorded it as preying on the tussock and 
brown-tail moths; but its abundance in-all stages on trees suggests that 
