192 
the inner apical angle slightly produced, the general habitus as in 
euschistoides. 
Length, 11.5 mm. 
Type, Anna, Ill., July 22, 1883. One specimen. 
This species differs from any other Euschistus known to me in hav- 
ing the dorsum very sparsely punctate. 
_ I found this specimen among some material that Mr. Hart had not 
incorporated in the collection. 
Euscuistus potitus Uhl. 
ELuschistus politus Uhler, Can. Ent., Vol. 29, p. 117. 1897. 
This species has been recorded by Uhler from Massachusetts, Rhode 
Island, Pennsylvania, Maryland, and the District of Columbia. It has 
been recorded by other workers from Ohio, New Jersey, and New 
Hampshire. 
In our collection ‘there is a male’ from Dubois—August 19; one 
female from Muncie—July 6; another from northern Illinois; and one 
without locality which is labeled “Euschistus pallidus Uhler MS.” 
In addition to these, there is a much darker female specimen from 
Minnesota, labeled by Mr. Hart “politus?” 
EUSCHISTUS TRISTIGMUS Say 
Pentatoma tristigma Say, Descrip. n. sp. Heter. Hemip. N. A., 1831; Compl. 
Writ. Ent. N. A., Vol. 1, p. 314. 
Recorded from northern Canada to southern Mexico. Distributed 
generally throughout Illinois but more common in the northern half of 
the state. Our specimens bear various dates ranging from April 11 to 
November 12, all the intervening months being represented. We have in 
, addition to Illinois examples, specimens from Wisconsin, District of 
Columbia, New York, and Minnesota. 
The editor is of the opinion that Iuwridus Dallas is distinct from 
tristigmus Say. The regularly rounded humeri of the former are very 
conspicuously different from the angular ones of tristigmus, and with the 
naked eye it is possible to recognize the forms very readily. The apical 
two antennal joints in /uridus are usually conspicuously darker than the 
others, but this character is not a dependable one. : 
The typical form of tristigmus is common in the southern half of 
Illinois, while /wridus is found in the northern portion, our localities 
including Algonquin, Chicago, and Savanna., We have specimens of Juri- 
dus from Buffalo, N. Y., Omaha, Neb., Duluth, Minn.; and Lone Rock, 
Wis. 
EUSCHISTUS PYRRHOCERUS H.-S. 
Cimex pyrrhocerus Herrich-Schaeffer, Wanz. Ins., Vol. 6, p. 71. 1842. 
’ 
This form is considered as a variety of tristigmus, and appears to 
replace it to a very large extent in the southern portion of the United 
States. I consider pyrrhocerus a distinct species. 
