58 
INTRODUCTIOX. 
and at times so much elongated as to form a length- 
ened muzzle in front of the head. From this cir- 
cumstance some of these insects are named Snout- 
moths. In a group of small species, distinguished 
by the name Peronea, they are directed obliquely 
douTnvards and much thickened towards the tip, 
forming a scaly somewhat hatched-shaped mass. 
One species C Anacampm Imfficcirnis ) receives its 
name from the length and unusual appearance of 
the appendages in question, which are curved up- 
wards on each side of the head, appearing like two 
long divergent horns ; and in another, tliey arc ad- 
vanced in front of the head and curved towivrds 
each other after the manner of a lobster’s claws, 
whence the insect is named the Lobsterclawed-moth 
( Chelaria rhomhoidella ). These are what are called, 
the place of their insertion, the labial palpi, 
and are the only organs of the kind with which the 
generality of moths are provided. In certain groups, 
however, there is likewse a maxillaiy pair, some- 
times conspicuoiis and imcovered, but usually mi- 
nute and concealed among the frontiil hairs. Such 
is the case with the family Texeites of LatreUle, 
and a few others allied to them. On the other 
hand the palpi, like the trunk, are sometimes wholly 
wanting, as may be seen in the Ghost and Emperor 
moths. 
The thorax is shorter, and generally more robust 
than among butterflies. Be, sides the patagia or 
tippets which they possess in common with the 
latter, many of them have an irregularly shaped 
