222 



ALNUS. 



attained a height of from four to six inches ; in the 

 following spring- they may be run into nursery rows, from 

 whence, in the course of a year or two, they will he fit to 

 transfer to their permanent stations. 



The insects which feed upon the Alder are very nu- 

 merous : among the coleoptera, we may particularize the 

 larva of the Callidium aini, a handsome longicorn beetle, 

 that feeds upon the living wood, making long galleries 

 in the heart of young trees ; the Clytus arietis is also 

 found upon it. In some districts the larva of Adimonia 

 aini, and a small species of jumping weevil are also common, 

 as well as Phyllobius aini, another of the weevil tribe. 

 Among the lepidopterous insects, we have found Notodonta 

 dromedarius, Lopliopteryx camelina, Acronycta psi, Geometra 

 ulmaria, besides several of the smaller species belonging 

 to the Tortricida and Tineidee. 



