194 INSECTA, 
teeth. Those which have a distinct proboscis form the subgenus 
Guavcoris of Fabricius(1), and those in which that organ is want- 
ing or is not distinct that of AcLaopE(2). 
There are numerous species of these two subgenera. ‘They 
seem to connect themselves with the Callimorphez. 
We should remark that the genus Sfygia, which was placed in 
this tribe, belongs to that of the Hepialites. 
M. de Villiers—Ann. de la Soc. Lin. de Par., V, 473—who has | 
given us some new observations on the S. australia accompanied 
with good figures, considers it as intermediate between the Sesiz 
and the Zygenz; but it has no proboscis. Its palpi are those of a 
Cossus. The antennz are short, nowise fusiform, and more analo- 
gous to those of certain species of Bombyx than to those of the 
Sesiz and Zygenz. This Insect, even in the arrangement of the 
colours of the superior wings, approximates much more to Cossus 
and Zeuzera than to the preceding subgencra. 
FAMILY III. 
NOCTURNA. | ; 
In the third family of the Lepidoptera, with some few ex- 
ceptions, we also find the wings bridled, when at rest, by a 
bristle or bundle of sete arising from the exterior margin of 
the lower ones, and passing into a ring or groove in the under 
part of the upper ones. The wings are horizontal or inclined 
and sometimes rolled round the body. ‘The antenne gradu- 
ally diminish in thickness from base to point, or are setaceous. 
This family, according to the system of Linneus, forms but 
the single genus 
PuaLana; Lin. 
These Lepidoptera seldom fly but at night or after sunset. Se- 
(1) Lat., Gen. Crust. et Insect., IV, 214; it is the genus Charidea of Dalman. 
(2) Lat., Ibid., idem; see also Godart, Hist. des Lépid. de France. ~ 
