64 THE BOOK OP EVEEGEEENS. 



ing to the Hymenoptera and Homoptera, which affect the 

 leaves as well as the twigs. There are also Lepidoptera 

 which do the same, especially the Toricidce. In addition 

 to the aforenamed Coleoptera, the following affect the 

 leaves : CTvrysomela Philadelphia ; Grtyptoscellis hirtus / 

 Dichdonycha albicallis ; Anomala pinicola ; and Met- 

 achoma 6-notata. Liopus facetus^ and Hylurgus dentatus^ 

 on the Cedars and Junipers." 



There are other insects infesting the Conifers in this 

 country, but not sufficiently numerous to require special 

 notice. For instance, in the Southern States, Michaux 

 mentions extensive tracts of the finest pines covered only 

 with dead trees, caused by swarms of small insects (prob- 

 ably Hylopius pales) which lodge themselves in different 

 parts of the stock, insinuate themselves under the bark, 

 penetrate into the body of the tree, and cause it to perish 

 in the course of the year ; but such instances as the above 

 are, perhaps, only local, and occur unfrequently. 



