LEPIDOPTERA. 285 
2. The second section of the Diurnal Lepidoptera is composed of 
species in which the posterior tibize have two pairs of spines, one at 
their extremity, and the other above; such also is the case in the 
two following families. The inferior wings are usually horizontal 
when at rest, and the extremity of their antenne very often forms a 
strongly hooked point. 
Their caterpillars, of which however but few are yet known, bend 
leaves together, and spin an extremely thin cocoon of silk (in the 
cavity), in which they become chrysalides; the latter are smooth or 
without angular elevations. 
These Lepidoptera form the Plebei, Urbicole of Linneeus, or the 
Papillons estropiés of Geoffroy. Fabricius united them to Argus 
by the generic name of Hesperia, but we must also refer to this sec- 
tion certain exotic Lepidoptera, called pages by the amateurs, of 
which the original habitat had not hitherto been well ascertained : 
such are the Uranie of Fabricius. These various Lepidoptera lead 
to our second family. 
They compose two subgenera : 
Hesperia Fab., 
Or the P. plebei urbicole of Linnzus, in which the termination of 
the antenne is distinctly globuliform or clavate, and the inferior palpi 
are short, broad, and densely covered with scales anteriorly. 
H. malve, Fab.; Rees., Insect. CL, 2, x. Wings dentated, 
blackish-brown above, spotted and speckled with white, the 
posterior margin marked with spots of the latter colour; inferior 
surface of the wings greenish-grey, with irregular and similar 
spots. 
The caterpillar- is elongated, grey, with a black head, and 
four yellow points on the neck or first ring, which is narrowed : 
a character peculiar to the larvee of this subgenus. It lives on 
the Malvacee, bends their leaves together, and there undergoes its 
metamorphosis. The chrysalis is black, but sprinkled with bluish*. 
Urania, Fab., 
Where the antennze, at first filiform, become attenuated or seta- 
ceous at the extremity, and where the inferior palpi are elongated 
_ and slender, with the second joint strongly compressed, and the last 
much smaller, almost cylindrical and naked f. 
FAMILY II. 
CREPUSCULARIA. 
In this family, near the origin of the external margin of their 
inferior wings, we observe a rigid squamous seta, in the form of a 
* For the other species, see Fab., Entom. Syst., division of the Urbicole ; Encyc. 
Méthod., article Papillon, genus Hespérie; and the Hist. Nat. des Lépid. de France 
of Godart. 
+ The Pap. ripheus, leilus, Lavinia, Orontes, Fab. ; Noctua Patroclus, Ejusd. The 
Uraniz compose the genera Cydimon, Nyctalamon, and Sematura of Dalman. See 
his Prodromus of the Monograph of the genus Castnia, p. 26. 
