56 SENATE 
Var. a. Spots on the thorax sanguineous. No. 745. 
b. Thorax with two black spots at its base. No. 
746. 
c. Thorax margined with black atits base. No. 
TAT, . 
d. Disk and base of thorax green, immaculate. 
No. 748. 
e. Thorax with a green mark shaped like a tri- 
dent, based onits posterior margin. No.749. 
AULACIZES. Amy. and Serv. 
Trenper-rootrep AvLacizes, 4. mollipes, (Say.) Jour. Acad. Nat. 
Sci., vi. 312. Common on the grass of meadows and 
pastures. No. '750, male; 751, female. 
New-York Avuacizes, */A. noveboracensis. Yellow; elytra and 
large spot at the base of the thorax, olive-green; no 
black vitta on the sides of the pectus; head shorter, 
broader, and its apex more obtuse, than in mollipes. 
Length, 0°33. Rare. On grass inmeadows. No. 752, 
female. 
*HELOCHARA. 
(Gr. éA0s, a marsh, xaipw, to rejoice.) Head obtuse-triangular, 
broader than long, slightly broader than the thorax, the trans- 
versely-striated front reflected over on to the anterior sides of 
the vertex ; vertex with a slight longitudinal stria ; ocelli on the 
vertex, farther from each other than from the eyes; tips of the 
male antenne knobbed ; elytra with five terminal and three dis- 
coidal cells. By its knobbed antenne, this genus occupies a 
similar rank in the sub-family Tettigonides, that Idiocerus does in 
that of Jassides. 
Common Hetocuara, *H. communis. Dark green; females grass- 
green, when faded variously mottled with tawny yel- 
low; beneath, more or less black, legs testaceous. 
Length, 0-20. On grass in marshy situations, often ex- 
cessively numerous. No. 753, male; 754, female. 
Var. a. The usual transverse row of large punctures 
on the foreside of the thorax obsolete. No. 755. 
