374 
INSECTA. 
PoLisTicHus, Bon. 
First joint of the antennae, as in the following suhgenus, shorter 
than the head; maxillary palpi of the ordinary length; second, third 
and fourth joints of the tarsi ; those of the two anterior legs particu- 
larly, short and nearly orbicular; the ligula terminated superiorly by 
a straight margin, its paraglossae salient, and resembling narrow, 
arcuated and pointed auriculae * * * § . 
Helluo, Bon. 
This subgenus is only distinguished from Polistichus by the en- 
tirely corneous ligula, which is rounded at the superior extremity, 
and without any distinct paraglossae. The species are all foreign to 
Europe f , 
The others, which with those that immediately follow, appear to 
approximate to the Brachini J, have the penultimate joint of all the 
tarsi strongly bilobate ; the mandibles and maxillae long, narrow, and 
projecting; the body thick; the head in the form of a narrow and 
elongated triangle ; the thorax almost cylindrical, and slightly nar- 
rowed posteriorly. 
The first joint of the antennae is long and narrowed at base. The 
mentum is nearly lunate, and is destitute of a tooth in the middle of 
the emargination. The ligula is salient, narrow, almost linear, and 
terminated by three stout spines ; it has two small paraglossae. The 
under part of the tarsi is covered Avith down. Such are the charac- 
ters of 
Drypta, Lat. Fab. 
All the species known belong to the eastern continent and to 
New Holland. Two inhabit Europe, and are always found on 
the ground. 
The most common is the Drypta emarginata. Fab.; Clairv. 
Entom. Helv. II, xvii; Hist. Nat. des Coleop. d’Eur., fasc, H, 
X. 1. It is about four lines in length, and of a beautiful azure- 
blue; the antennae, mouth and legs, fulvous: extremity of the 
first joint of the antennae and the middle of the third, blackish ; 
elytra Avith punctate striae. More common in the south of 
France than the north. M. Blondel Jun., hoAvever Avas found 
it in abundance in a locality near Versailles §. 
* Galerifa fasciolata, Fab. ; Clairv., Ib., 13, b ; Hist. Nat. des Coleop. d’Eur. 
Ib., 4; — Polistichus discoideus, Ib. 5. See the Spec, des Coleop., Dej. I, p. li)4. 
•t Helluo costatus, Hist. Nat. des Coleop. d’Eur., fascic. JI, vi, 5 ; — Galerita 
hirta, Fab. See the Species Gener. Dej. I, p. 283. 
An undescribed species from Brazil appears to me to form a new subgenus by its 
filiform palpi, of which the last joint is cylindrical. 
X The Dryptae are also allied to Cjxhrus^ and seem to connect the Cicindelitae 
with the Carabici Grandipalpi. Several sections of this family seem to connect 
themselves with the Cicindelae like so many branches. Most of the other families 
of Insects are similarly situated, or form ramified trunks — in a Avord, continuous 
series do not exist in nature. 
§ For the other species, see Hist. Nat. des Coleop. d’Eur., fascic. II, x, 2 ; and the 
Species Gener. des Coleop. Dej. I, 182. 
