THE CANADIAN ENTOMOLOGIST 73 



S. N. Lord. — Assistant, Ottawa, 7oth Battalion, C. E. F. 



T. Rankin. — Assistant, Ottawa, P. P. C. L. I. 



*A. H. Bush. — Inspector, Vancouver, B.C., Pioneer Battalion. 



The above list would be considerably longer had it been possible 

 for the Government to release for military service more of the 

 scientific olificers. Most of the officers of the Branch have applied 

 for leave of absence for military service, but in view of the im- 

 portance which the Government lays on the maintenance of the 

 agricultural production of the country it has decided that such 

 trained men are serving the country to the best advantage by con- 

 tinuing their present work, especially in view of the scarcity of 

 trained men, than by undertaking duties of a military character, 

 and for this reason it has not been possible to release more than 

 those whose names are included in the above list. 



THE BAY FLEA-LOUSE, TRIOZA ALACRIS FLOR. AS A 

 NEW PP:ST in new JERSEY. 



BY HARRY B. WEISS, NEW BRUNS^VICK, N.J. 



For the past several years, this psyllid has been present in 

 several green-houses in New Jersey, but only recently has it in- 

 creased numerically enough to disfigure seriously its host, Laurus 

 nobilis, the victor's laurel of the ancient Greeks. Its presence on 

 bay trees can be readily detected by the curled, discoloured leaves, 

 usually at the tips of the branches, containing what appear to be 

 cottony masses. Upon ujicurling a leaf, the nymphs are easily 

 seen, clothed in a white, waxy secretion. As a rule, the edges of 

 infested leaves are rolled in tightly toward the mid-rib and become 

 thick, distorted and of a whitish colour, giving the tree in severe 

 infestations, a sickly and unwholesome appearance. 



In "Ziekten en Beschadigingen der Tuinbouwgewassen," by 

 M. Van Den Broek en P. J. Schenk (Holland, 1915), the authors 

 state that the ba>' leaf flea, so called, overwinters in the adult 

 stage, appearing in the spring and depositing eggs on the under- 

 sides of the leaves, and that bays in and out of green-houses are 



♦Killed. 



February. 1917 



