COLEOPTERA. 



beneficial, both in the larva and adult states, feeding 

 upon plant-lice and the eggs of other insects. 



The larva, when full grown, attaches itself to a leaf, 

 and either casts off its skin, which is collected in a mass 

 at its tail, or undergoes its transformations within the 

 larva skin. 



Two very common species (at Ithaca) are the Nine- 

 spotted Coccinella, Coccinella novemnotata Herbst, 

 and the Spotted Hippodamia, Hippodamia maculata 

 De Geer. (i, 511 ; 14, I., 395). 



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