212 INSECTA. 
a sort of flounce: others are in the form of a bat and sometimes den- 
tated 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 Tinez, commonly called Moths, clothe 
themselves 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 meta- 
morphoses, after closing the orifices with silk. 
Those, who wish to become well acquainted with the manner in 
which they construct these habitations, and to acquire a knowledge 
of their various forms and materials, must have recourse to the Me- 
moirs of Réaumur, Resel and De Geer. 
The Pseudo-Tinez content themselves with mining the interior 
of the vegetable and animal substances on which they feed, and 
forming simple galleries, 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 pa- 
renchyma of the leaves on which they feed, have been called Mineuses 
or 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 Coniferz, serve for aliment and habitations 
to others. These Insects are frequently ornamented with the most 
brilliant colours. In several species the superior wings are deco- 
rated with golden or silver spots, sometimes. even in relievo. 
Some, in which the four palpi are always distinct(1), exposed, or 
merely partly concealed (the superior ones) by the scales of the cly- 
peus, salient, and of a moderate size, resemble Phalene—P. pyra- 
lides, L.j—their tectiform wings most frequently flattened, or but 
slightly raised, form an elongated triangle or sort of delta. 
Sometimes the proboscis is very apparent, and serves for its ordi- 
nary use. The caterpillars of these species live on various plants. 
(1) The Yponomeutz, one or two excepted, GEcophore and Adele aré almost 
the only Tineites whose maxillary palpi are not very apparent, but as they may be 
concealed by the inferior ones, and as it is very difficult to establish in this re- 
spect a fixed and rigorous line of demarcation, we have not thought proper to 
divide the Tineites according to the number of those organs. M. Savigny, in his 
Memoirs on the invertebrate animals, has published some figures in which they 
have various proportions. The new genera, which he merely mentions, are un- 
known to us. 
