Report of Entomologists of Experiment Station. 551 



early summer, while the young scales are hatching. In order to 

 make the work thorough, more than one application will be needed 

 in most cases, as Mr. Marlatt says that the period during which the 

 scales may continue to hatch extends over a considerable time. 



In Insect Life, Yol. VII, p. 120, Mr. Marlatt states that he suc- 

 ceeded in killing newly hatched scales of this species with kerosene 

 emulsion reduced to one part of the emulsion to thirteen parts of 

 water. 



