96 THE CANADIAN ENTOMOLOGIST. 



myself, and because Mr. Chambers informed me that he should not him- 

 self publish them. In all other points Mr. Chambers agrees to the value 

 and unquestionable authority of Lord Walsingham's determinations. 



In the choice of specific names, it will be observed that his Lordship, 

 does not restrict himself to the termination ella, as witness his Cressoni, 

 simnlatus, inor?iafa, iiiscripta, etc. While it is a great convenience, to 

 the tyro especially, to have a conventional termination for the specific 

 names of all species constituting a certain family, such as ella for the 

 Tineids, ana for Tortricids, and alis for Pyi-alids, there is no doubt that 

 strict adherence to such a rule sometimes puts the author to inconveni- 

 ence, and often necessitates more than a " poet's license " with grammati- 

 cal rules. 



In a future paper I shall have occasion to refer to a few of Lord 

 Walsingham's new species in connection with their life histories. 



ENTOMOLOGY FOR BEGINNERS. 



BY THE EDITOR. 



THE APPLE-TREE APHIS— Aphi^ mali? Fabr. 



This species of Aphis is very conunon throughout the Northern United 

 States and Canada, and has of late ai)peared in such numbers in some 

 localities as to excite much alarm among fruit growers. The eggs are 

 deposited by the parent lice in the autumn, about the base of the buds of 

 the apple tree, and in crevices of the bark on the twigs. A\'hen first laid 

 they are light yellow or green, but gradually become darker in color and 

 finally black. During the winter these tiny, oval, shining black eggs may 

 be found with the aid of a magnifying glass on almost every apple tree. 



As soon as the buds begin to expand in the spring, small hce are 

 hatched from these eggs, which locate themselves on the swelling buds 

 and young tender leaves, and inserting their sharp beaks into the tissues, 

 feed on the sap they contain. The lice vary in color from green to dark 

 greenish-brown, the darker color prevailing at first, the lighter color in a 

 few days afterwards. When they are abundant, the buds — especially the 

 blossom buds — are sometimes thickly covered with them, yet it is seldom 

 that any serious injury results from their attack. 'I'he growth at this 



