810 
ANNUAL REPORT OF NEW-YORK 
say’s heteropterous hemiptera. 
thorax, lateral edge rectilinear: jpectus and postpectus yellow, 
with three broad black vittse, which become more dilated, 
brown and less obvious on the abdomen : feet obsoletely sub- 
annulate. 
Length two inches and one-fifth; greatest breadth less 
than nine-tenths of an inch. 
Occurs in various parts of the Union. I received a specimen 
many years since from Dr. F. V. Melsheimer labeled Nepa grisea, 
which name I retain. It differs from the preceding in magni¬ 
tude, in the form of the anterior part of the head, &c. It is 
much like the B. grandis, Linn, but is hardly half as large, and 
if Stoll’s figure of that insect has any pretensions to accuracy, 
it is in other respects quite distinct. In that figure the greatest 
breadth is at the base of the elytra, &c. 
It inhabits from Canada to Florida. 
3. B. dilatata, Dark grayish-brown, much dilated, ovate some¬ 
what depressed; head obsoletely varied with dull-yellowish: 
thorax with the lateral margin very distinct; anterior edge 
obviously elevated ; impressed line of the posterior submargin 
well defined, not abbreviated ; feet somewhat annulated; venter 
tinged with rufous. 
Inliab. Mexico. 
Length one inch and one-tenth. 
Resembles fluminea, Nob. but is much larger and proportion¬ 
ally much more dilated. It was found between Vera Cruz and 
Jalapa by Wm. Bennett and presented to me by Mr. Maclure. 
Corixia, Geoff, Latr. 
1. C. calva, Thorax eight or nine lined: lines of the hemelytra 
subequal. 
Inhab. U. S. 
Body above glabrous, polished, pale yellowish, with transvorse, 
black lines: head immaculate, the posterior angles distinct: 
thorax with eight or nine black transverse lines: hemelytra with 
numerous, undulated or angulated black transverse lines more 
or less bifid and inosculated ; those of the anterior inner portion 
not larger than the others; lateral grooves and all beneath ye’ 
lowish white. 
Length less than one-fifth of an inch. 
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