444 INSECTA. 



the sides, and frequently raised or ascending posteriorly like the tail of a cock. 

 In both cases the inferior wings are always wide and plaited. These species 

 also frequently have the four palpi exposed. 



All the caterpillars, whose habitations (sheaths) are fixed or immoveable, are 

 the Pseudo-Tinea of Reaumur; those which construct portable ones, which 

 they transport with them, are true Tinea. 



The substances on which they feed, or on which they reside, furnish the 

 materials of the structure. 



Of those sheaths which are composed of vegetable matters, many are very 

 singular. Some, like those of the Adelae, are covered exteriorly with portions 

 of leaves laid one over the other, and forming a sort of flounce : others are in 

 the form of a bat, and sometimes dentated along one of their sides. The 

 material of some of them is diaphanous, and as if cellular or divided by scales. 



The caterpillars of the true Tineee, commonly called moths, clothe them- 

 selves with particles of woollen stuffs, which they cut with their jaws and on 

 which they feed, hairs of furs, and those of the skins of animals in zoological 

 collections, united by silk. They know how to lengthen their sheath, or to 

 increase its diameter by slitting it and adding a new piece. In these tubes 

 they undergo their metamorphosis, after closing the orifices with silk. 



The Pseudo-Tinese content themselves with mining the interior of the 

 vegetable and animal substances on which they feed, and forming simple gal- 

 leries, or if they construct sheaths either with those matters or silk, they are 

 always fixed, and are mere places of retreat. 



These caterpillars, which perforate in various directions the parenchyma of 

 the leaves on which they feed, have been called Miners. They produce those 

 desiccated spaces, in the form of spots and undulating lines, frequently observed 

 on leaves. Buds, fruits, and seeds of plants, frequently those of wheat, and 

 even the resinous galls of certain Conifera?, serve for aliment and habitations 

 to others. These insects are frequently ornamented with the most brilliant 

 colours. In several species the superior wings are decorated with golden or 

 silver spots, sometimes even in relief. 



AGLOSSA, Latreille, 



Where the four palpi are exposed, and the wings form a flattened triangle ; 

 there is no emargination in the extremity of the upper one. 



A. jringuinalis. Superior wings agate-grey, with blackish stripes and spots. 

 Found in houses on the walls. 



Its caterpillar is naked, blackish-brown, glossy, and feeds on fatty or buty- 

 raceous substances. Reaumur called it the Fausse-teigne-des cuirs, because it 

 also feeds on leather and the covers of books. It constructs a tube which it 

 places against the body on which it feeds, and covers it with granules. 



GALLP.RIA, Faltricius, 



Where the scales of the clypeus form a projection that covers the palpi ; and 

 the superior wings, proportionally narrower than in Aglossa, and emarginated 

 in the posterior edge, are, as well as the inferior ones, strongly inclined and 

 turned up posteriorly like the tail of a cock, as in many species of the follow- 

 ing subgenera: 



