HEMIPTERA. 23 
The female of the P. grisea—Cimex griseus, L.—protects 
and leads her young ones just as a hen does her chickens(1). 
| We have thought it requisite to establish a new generic section, 
Hererosceris, for a Pentatoma peculiar to Cayenne, in which the 
head is cylindrical and the anterior tibiz form a semi-oval pallette. 
Sometimes the antennz have but four joints, and the body is gene- 
rally oblong. 
Here the antenne are fitter or clavate. 
Certain species foreign to Europe approach the preceding in the 
general form of their body, which is rather ovoid than oblong, and 
are distinguished from all the following. ones, either because it is 
much flattened, membranous, and with a strongly dilated, slashed 
and angular margin, or because their thorax is prolonged posteriorly 
in the manner of a truncated lobe, and their sternum is horned— 
these latter form the subgenus 
TEssERATOMA, 
@ Established by MM. Lepeletier and Serville—Encyc. Méthod.— 
with the dessa papillosa of Fabricius, and his EL. amethystina. 
Some other’ Edessz of the same naturalist—the obscura, mactans, 
viduata—resembling ordinary Pentatomz, without any posterior 
thoracic prolongation, but with quadriarticulated antenne, might 
also form another subgenus—Dunipor.  _ 
A species from Brazil, analogous by its flattened form to thi 
Aradus of that naturalist, in which the edges of the body are 
dilated, slashed and angular, and its anterior extremity forms a 
sort of clypeus truncated before, cleft in the middle, unidentated 
on each side behind, and concealing antenne, geniculate near 
their middle, and seemingly formed of but three joints because 
the first is very short, is the type of the subgenus 
Puiza, Lepel. and Serv.(2) 
All the following Geocorise are generally oblong, besides which 
they present none of the other characters peculiar to the preceding 
subgenera. 
Here the antennz are inserted near the lateral and superior bor- 
ders of the head, above an imaginary line drawn from the middle of 
the eyes to the origin of the labrum. The simple eyes are either ap- 
(1) See Fabricius, genera ut sup. 
(2) Encyc. Méthod. 
