802 
ANNUAL REPQRT OF NEW-YORK 
sat’s heteropterous hemiptera. 
verse indentation: scutel transversely rugulous: hemelytra 
yellowish-white on the corium at tip of which is a large, trian¬ 
gular, blackish spot; membrane milky white : feet whitish; 
thighs, excepting their tips, black. 
Length more than one-twentieth of an inch. 
This is a very common little species in almost every part of 
the Union, on flowers. The largo triangular black hemelytral 
spots are very conspicuous. The antennae are rather short and 
robust. The lateral edge of the thorax is not interrupted. 
6. It. musculus, Black; hemelytra white, corium and mem¬ 
brane blackish at tips; feet lioney yellow. 
Inhab. N. W. Territory. 
Body small, unarmed, black, somewhat polished: antenna 
-: thorax a little contracted on the anterior margin, 
almost like a short neck; on the middle an obtusely impressed, 
but not profound band, behind which the surface is minutely 
wrinkled ; posterior margin deeply and obtusely emarginated : 
scutel rugose towards the depressed tip: hemelytra whitish, 
hyaline; corium with a large blackish spot occupying the pos¬ 
terior half; membrane dusky towards the tip : feet honey yellow; 
tarsi dusky at tip. 
Length to tip of hemelytra over three-twentieths of an inch. 
Resembles the preceding, but is larger, the head more elon¬ 
gated and otherwise very distinct. 
*7. R. pectoralis, Nob. New species of N. Amer. Ins. found by 
J. Barabino. A complicated spine beneath the eye and a pro¬ 
jecting spine each side of the pectus before. 
Petalocheirus, Beauv. * 
1. P. cruciatus, Sanguineous, thoracic spot, scutel and heme¬ 
lytra black; scutel bifid at tip. 
Inhab. U. S. 
Body sanguineous: head black behind the eyes: antenna black: 
thorax with a longitudinal impressed line extending nearly to 
the base and forming a cruciate mark with the transverse line; 
an irregular black spot on the disk; scutel rugulous, lip [tipj 
orbicularly bifid: hemelytra black; humerus yellowish : pectus 
and postpectus black: feet whitish; thighs at tip and tibiao 
