34 MODERN ARRANGEMMENT OF 
sect in repose are slightly sloped or horizontal, and form with 
the body a broad and short triangle. 
The genera are Pyratts, Votucra, Xyxtopopa, Pro- 
ceras and Hermintia. 
The caterpillar provided with fourteen feet. 
Genus Pyratis, Latreille. 
The antenne are setaceous ; the wings are short, 
broad at their base, forming with the body a 
truncated ellipse or triangle, of which the opposite 
sides are arched near their junction. 
Famitry VI.—Puaranires, Latreille. 
The caterpillars with ten or twelve feet, the anal 
ones never wanting; body naked, glabrous, 
generally long or linear, the two extremities 
approximated in walking, and the intermediate 
portion curved upwards in an annular form ; 
chrysalis slightly enveloped, or the cocoon with 
but little silky matter ; body of the insect often 
slender, with wings extended, or in a flattened 
slope ; spiral trunk none, or minute ; many of 
the males having pectinated antenne. 
I. Caterpillars with twelve feet. 
Tt has but one genus, Merrocamrus. 
II. Caterpillars with ten feet. 
1, Males and females with wings formed for flight. 
It has but one genus, PuaLena. 
2. Females apterous or semi-apterous, and unable to fly. 
It has but one genus, Hysernia. 
