58 INTRODUCTION. 



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 aie directed obliquely 

 downwards and much thickened towards the tip, 

 forming a scaly somewhat hatched -shaped mass. 

 One species (Anacampsis longicornis) 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, they are ad- 

 vanced in front of the head and curved towards 

 each other after the manner of a lobster's claws, 

 whence the insect is named the Lobsterclawed-moth 

 ( Chelaria rhomboidella) . These are what are called, 

 from 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 likewise a maxillary pair, some- 

 times conspicuous and uncovered, but usually mi- 

 nute and concealed among the frontal hairs. Such 

 is the case with the family TENEITES of Latreille, 

 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. Besides the patayia or 

 tappets which they possess in common with the 

 latter, many of them have an irregularly shaped 



