HEMIPTERA. 25 
the thorax is much wider posteriorly than before, or forms a triangle 
with a truncated apex. The body is generally less narrow than in 
the opposite division, or that which is composed of the Alydi. 
Hotuymentia, Lepel. and Serv. 
Where the second and third joints of the antenne are shaped like 
a palette(1). i 
Pacuytis, Lepel. and Serv. 
Where the third only has that form(2). 
ANISOScELI, Lat. 
Where the antennz are filiform and not dilated(3). 
Certain Geocorisz of the same division, with a narrow and elon- 
gated body, projecting eyes, the ocelli approximated, and the thorax 
merely a little narrower before than behind, and almost trapezoidal, 
form the subgenus 
Auypus, Fab.(4) * 
Now come Geocorisz with a very narrow, long, filiform, or linear 
body. The antenne and legs are also proportionally smaller. 
Leprrocorisa, Lat. 
Where the antennz are straight(5). 
Nerves, Lat.—Berytus, Fab. 
Where those organs are geniculate(6). 
(1) Encyc. Méthod., Insect., X, p. 61. Add Lygzus biclavatus, Fab. 
(2) Encyc. Méthod., Ib. p. 62. 
(3) Some have the posterior tibia edged with a membrane: the I. membrana- 
ceus, compressipes, phyllopus, gonagra, foliaceus, dilatatus, tragus, &c. Fab. 
The others are destitute of that membrane: the L. vulgus, grossipes, tenebrosus, 
fulvicornis, curvipes, profanus, phasianus, bellicosus, &c. Fab. 
Some species, with smaller antennz, and of the length of the body, form the 
subgenus Nematorus of my Fam. Nat. du Rég. Animal. 
(4) See the Syst. Ryngator., Fab., p. 248. 
(5) The Gerris of Fabricius, with the exception of the vagabundus. 
(6) See Lat., Gener. Crust. et Insect., IfI, p. 126; and Oliv., Encyclop. Métho- 
dique. 
Vou. IV.—D 
