32 MODERN ARRANGEMENT OF 
tive against the depredations of moths. Spirit of wine or tobacco 
smoke are equally effectual ; but the one soon evaporates, and 
the application of the other is difficult, 
Famity 1V.—Nocrvu £1118. 
The species are always nocturnal, with the wings 
entire, horizontally extended or sloping, and 
forming a triangle with the body ; tarsi and labial 
palpi bent, compressed, furnished with scales, 
and terminated abruptly by a joint shorter and 
more slender than the preceding. 
The caterpillars of this tribe are always naked, and never want 
the anal fect. The general number of their feet is sixteen, but 
some have only twelve. ‘The perfect insect has always a spiral 
proboscis, and triangular wings proper for flight, in some sepa- 
rated, in others lying upon one another, or sloping. In a great 
number the hairs or scales above the thorax, and often on the 
abdomen, form a kind of crests or dentations. ‘The males of 
many species have pectinated antenne. 
TI. Caterpillars with sixteen feet. 
1, Labial palpi of medium size. 
The genera are Eresus and Noctua. 
i) 
. Labial palpi large. 
The genera are CaryrTRa and Gonoprervus. 
II. Caterpillars with twelve feet. 
1, Labial palpi large. 
It has but one genus, CurysorTerus. 
2. Labial palpi of medium size. 
It has but one genus, Prusia. 
