542 
INSECTS. 
border of the under wings, near their origin ; which fits into a 
groove below the upper wings, and keeps the four in a horizon¬ 
tal position while in repose; antennae claviform and elongated, 
those of many males, and sometimes both sexes, strongly pec¬ 
tinated or serrated ; caterpillars always having six legs. 
Genus SPHINX.— Latreille. 
Generic Character. —Lower palpi having but two visible 
joints, the third being small, contiguous, and scaly; antennae 
commencing their club form near the centre, simple, or having 
three transverse striae, bearded, but never strongly serrated ; 
tongue corneous ; body short and thick ; eyes large ; wings near¬ 
ly horizontal, and forming a triangle with the body; abdomen 
conical; feet thick ; the tarsi ending in two simple hooks. 
Sphinx Atrupos — The Death’s Head Sphinx. 
Plate CI. fig. 5. 
Upper wings dark grey, with zigzag marking of black, orange 
and white; body orange-coloured, barred with black; on the 
top of the thorax is a large pale ochre-yellow mark, exactly re¬ 
sembling a human skull. Inhabits Britain. 
TRIBE III.-NOCTURNA. 
All the wings horizontal, or forming an inclined plane when 
in a state of repose ; the antennas are setaceous. 
Genus BOMBYX.— Fabricius. 
Generic Character. —With entire, horizontally extended, or 
inclined wings, forming a triangle with the body; upper palpi 
concealed, the lower ones very small, in form of tubercles, cy¬ 
lindrical or conical, diminishing in thickness towards their point; 
tongue, if it exists, not perceptible; antennse pectinated, espe¬ 
cially in the males ; abdomen very large in the females ; cater¬ 
pillar with fourteen or sixteen feet; those w r ith fourteen feet 
having a forked tail in place of the last two feet. 
Bombyx pavonia major. — The Peacock Moth. 
Plate Cl. fig. 9. 
Wings round, variegated with deep and pale gray, black brown, 
and purplish brown; with a deep edging of pale brown ; web of 
