564 
INSECTA. 
The female of the last-named species protects her youn^? with great care, leading them about as a hen does her 
chickens.. 
Heteroscelis^ Latr., is formed for the reception of a species from Cayenne, having the head cylindrical, the 
anterior tibi« broad and palette-like. 
Canojms, Fabr,, as shown by the recent observations of M. Alexandre Lefebvre, is composed of small South 
American insects, not yet arrived at their full developement, having the body rather compressed, and very convex 
above, concave beneath, and the ocelli, as well as the wings, wanting]. 
[The preceding insects form the family Pentatomidce^ Leach ; Pentatomites and Scutellerites, Laporte ; and 
Scutati, Burmeister. The number of genera into which they have been divided by these authors, as well as by 
Hahn, in his Die Wanzenartigen Insecten, is very greatly increased, and has probably been carried too far.*] 
Sometimes the antennee have only four joints, and the body is ordinarily oblong. In some of these the antenna3 
are filiform or clavate. 
Some exotic species approach the preceding in the general form of the body, being rather ovoid than oblong, 
and are distinguished from all the following by being either very flat, membranous, with the margins very strongly 
dilated and angular, or by having the prothorax posteriorly prolonged into a truncated lobe, and the sternum 
cornuted. Such is 
Tesseratoma, Lepel and Serv. Type, Edessa papillosa, Fab. 
Dinidor, Latr., has similarly 4-jointed antennae, but the thorax is not posteriorly lobed. (Edessa obscura, 
mactans, &c.) 
Phl<jea Lep. and Serv., is quite flat and membranous, with the sides of the body dilated and angular, the ante- 
rior extremity forming a flattened, truncated hood, hiding the antennae, which are very short, apparently 3-jointed, 
and elbowed. [P. corticata, a singular Brazilian insect.] 
All the others have the body generally oblong, and do not exhibit such characters as the last group. Some of 
these have the antennae inserted near the lateral and superior margin of the head ; the ocelli are close together, 
or at the same distance apart as they are from the eyes. 
Coreus, Fab., has the body oval ; the last joint of the antennae ovoid or fusiform, often thicker and not longer 
than the preceding. C. marginatus, Geolf. [a common English species]. From the proportions of the joints of 
the antennae the species may be thus subdivided. Gonocerus, with the third joint of the antennae compressed and 
angular at the sides,— C'. sidcicornis, insidiator, &c. ; Syromastes, with the third joint of the antennae simple, and 
longer than the fourth, — C'. marginatus, &c. ; Coreus, with the last joint of the antennae much longer than the 
fourth, and compressed,— C. liirticornis, &c. 
Holhymenia, Lep. and Serv., has the second and third joints of the antennae plate-like. [Exotic species.] 
Pachylis, Lep. and Serv., has the third joint alone of this form. 
Anisoscelis, Latr., has the antennae Aliform, without dilatation ; some have the posterior tibiae with a broad mem- 
brane,-L. membranaceus, F., &c. The others, L. valgus, &c., have not, [but the hind femora are often grotesquely 
thickened. These are exotic species of large size.] Some of the species, with long slender antennae, form my 
genus Nematopus. ^ 4 .x, 
Alydus, Fab., has the body long and narrowed ; the eyes prominent ; the ocelli close together, and the thorax 
slightly broader behind. [A. calcaratus, a rare British species]. 
Leptocorisa, Latr. [part of Gerris, Fab.], has the body long and filiform ; the antenna and legs are also greatly 
elongated, and the former straight. _ . . i, 
Neides, Latr. (Berytiis, Fab.), has the antennae elbowed. [Small singular insects, three or four species of which 
occur, but rarely, in this country. C. tipularius, Linn.] 
We now pass to the Geocorisce which have the antennae similarly filiform, or thickened at the tips, and 
4-jointed, but inserted lower than in the preceding ; the ocelli are close to the eyes, and the apical membrane of 
the hemelytra has only four or five nerves. [These form the family Lyg(sid<e.'] 
Lygveus, Fabr., has the head narrower than the thorax, which is narrowed in front,— C. eqzcestris, Linn. C. dp- 
terus Linn. ; red, with the head, a spot on the thorax, and two on the hemelytra, black ; the wing-covers without 
apical membrane, but occasionally this, as well as the wings, is fully developed. [The ocelli are wanting in this 
species, which forms the type of the genus Pyrrhocoris, Fall. ; Platynotus, Schill. ; or Astemma of Lep. and Serv. 
It is occasionally found in this country.] 
The species with the fore-legs thickened form the genus Pacliymerus, Lep. and Serv., but which name having 
been previously used, must be changed. [The species are very numerous, and form Hahn’s genus Rhy- 
parochronus-l , 
[Geocoris, Fallen, Opthalmicus, Schill.] Saida, Fab., has the head as broad as the thorax, and often dilated 
behind, with large eyes, S. atra, grylloides, &c., Fabr. 
Myodatlia, Latr., has the hind part of the head elongated into a neck. 
We now arrive at those Geocorisve longilabres with four-jointed antennae, slender, and often capillary at the tips. 
Astemma, Latr. has the second joint of the antennae of equal thickness, the thorax scarcely broader behind than 
in front, transverse, quadrate, or cylindrical. Saida pallicornis, &c. 
Miris, Fab., resembles Astemma in the antennae, but has the thorax narrowed in front. 
Capsus, Fab., has the thorax trapezoid, and the second joint of the antennae slender at the base, pilose and thick 
at the tip. [C. ater, and a great number of English species.] 
* The Rev. F. W. Hope has published a catalogue of the species | species. Germar has also added many new genera and species in the 
belonging to this tribe, with the description of a great number of new first part of his Zeitschrift fur die Entomologie, 1839. 
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