INSECTS INJURIOUS TO THE VINE. 815 



employed to designate the same insect as the Iwcolvulus of 

 Plautus.q In this perplexity, the similarity of the words and 

 their derivations, which indicate the same habits and economy, 

 will not allow of their separation, and should satisfy us that 

 they were used to designate one and the same insect ; or rather 

 that it is the same name with the addition of two different 

 particles which do not alter its meaning. No insects except 

 the caterpillars or larvae of Lepidoptera have an economy 

 similar to that attributed by Plautus to the Inrolrulus : u Bes- 

 tiola quce in Pampini folio intorta implicat se." 



The caterpillar not only rolls up the leaf of the plant in 

 which it wraps itself up, like the larva of the Eumolpus Vitis, 

 or Coupe-bourgeon, but it fastens itself therein, and, by means 

 of silken threads spun from its body, constructs a cocoon 

 wherein to undergo its metamorphosis ; it infolds itself, implicat 

 se. We know a whole family of Lepidoptera who have this 

 habit of rolling themselves up in the leaves of plants. 



In order, therefore, to find the Intohulus or Convolvulus of 

 the ancients, we must look amongst those species in the 

 numerous family Tortricites, the caterpillars whereof attack the 

 vine. 



According to Bosc, the cultivators of the south of France 

 designate a Lepidopterous insect, which is but little known in 

 the neighbourhood of Paris, by the name of T eigne de la Vigne. 

 The caterpillar of this moth attacks the grapes when they are 

 about half grown, travelling from grape to grape by a gallery 

 of its own construction. 1 



Another species, the Teigne du Raisin,* also eats the grapes, 

 beginning at the same time as the other, but it seldom 

 attacks more than one grape at a time : it was this insect which 

 committed such great devastation in the vineyards in the neigh- 

 bourhood of Constance. 



A species resembling this, or the preceding, two or three indi- 

 viduals of which are sufficient entirely to destroy a vine, was 

 seen by Pallas, in the Crimea. 1 This appears to be the cater- 

 pillar of a Procris, or Zygcena (a genus separated from Sphinx), 



i See the former part of these Researches, p. 141 of this volume. 

 r Bosc. Notice sur la Pyrale et autres insectes, qui nuiseni aux Vignobles. Esprit 

 des Journaux, p. 132, et Bulletin de la Societe d' Encouragement. 

 s Kirby, Introduction to Entomology, vol. i. p. 205. 

 ' Pallas, Travels in Russia, t. ii. p. 241. 



