40 PROTECTION OF PLANTS, 1920-21 



"I have no authority for calling this species laricifex, except that there is 

 nothing in the description of Fitch or others to preclude its identity with that 

 species, and the habitat and what habits are recorded for laricifex agree with 

 this Maine species. There is, so far as I know^ no authentic specimen of lari- 

 cifex for comparison." 



I append here a short explanatory note concerning the genus Lachnus 

 above mentioned : 



"This is a large and wide-spread genus of Aphides or plant-lice, typical 

 of the sub-family Lachnince. They are characterized by the linear stigma and 

 nearly straight fourth vein of the fore wings. Nearly all the many species have 

 woolly-looking waxy exudation, whence the name." 



I intend, if I find this aphis on my larches next summer, to send a few spe- 

 cimens of it to Dr. Patch for identification and comparison with the species that 

 she has found on the Maine larches. 



If I am right in my identification of what I am inclined to call my new 

 entomological find, it would be classified as follows : Class, Insecta ; Order, 

 Hemiptera ; Sub-order, Homoptera ; Family, Aphididae ; Sub-family, 

 Lachninae ; Genus, Lachnus ; Species, Lachnus laricifex. Fitch. 



