24 



THE COLLECTORS' MONTHLY. 



be the means of changing our whole 



life current. 



•♦♦» 



A Carnivorous Caterpillar. 



Prof. Perrier, of the Paris Museum 

 recently stated to the Academy of 

 Sciences, that Mr. Rouzand, maitre 

 de conferences, at the Faculty of Sci- 

 ences of Montpelier, has studied the 

 habits and metamorphoses of a re- 

 markable butterfly whose caterpillar 

 lives upon the olive tree. The lepi- 

 dopter was briefly described by Ram- 

 bour sixty years ago, under the name 

 of Erastria scicula. 



Unlike its fellows, the caterpillar of 

 the Erastria does not eat the leaves 

 of the tree upon which it lives, but, 

 on the contrary, despoils the latter of 

 its parasites. It is nut herbivorous, 

 but carnivorous, and feeds upou the 

 coceinellidse that abound upon the 

 olive tree and often cause the death 

 of it. 



In addition to this peculiarity, this 

 singular animal presents others of 

 great interest. In its adult state it is 

 so colored as to exactly simulate the 

 excrement of the sparrow. While 

 very young it hides itself under the 

 carapace of the coceinellidse that it de- 

 vours. When a little older it spins a 

 ring of silk around such cerapace, and 

 thus enlarges its dwelling in such a 

 way that it shall always be adapted to 

 its own size. Let us add that it con- 

 ceals this addition under the debris of 

 coceinellidse and the spores of Funiayo, 

 a fungus parasite of the olive tree. — 

 Scientific American. 



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TO EXCHANGE.— A Waltham 7-jewel movement, 

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