'93 



publication by M. Charles Oberthur, of Rennes, Ille et Vilain, France. 

 The number before me contains 3 plates, with 44 figures, which are 

 faultless in drawing and general execution. The work will be com- 

 pleted in about 12 numbers, and will be a most valuable contribution to 

 entomological science. Hy. Edwards. 



Killing Lepidoptera. — I have been experimenting with the Hypo- 

 dermic syringe for killing Lepidoptera ever since last fall, and am satis- 

 fied of its efficiency. I use a clear solution of cyanide of potassium in 

 alcohol, and by introducing the lancet point of the syringe and inject- 

 ing a drop of the fluid in the thorax it kills instantly and does not 

 leave any stain on the outside. I have used it in every instance so far 

 on the Lepidoptera as they emerge from the chrysalis. The scales and 

 hairs are thus not disturbed in the least, and the specimen really re- 

 quires less handling. On trying it with some Cecropia, etc., they were 

 dead before putting them down. C. W. Blake. 



TO OUR SUBSCRIBERS. 



January 19, 1884. 

 With great regret I am compelled to relinquish the active editor- 

 ship of " Papilio," the demand upon my time from other and more 

 exacting matters rendering it impossible for me to continue the super- 

 intendence of the journal. It gives me, however, great pleasure to be 

 able to state that my friend, Mr. E. M. Aaron of Philadelphia, will 

 accept the position I have vacated, and I am confident that under his 

 able guidance, the continued success of "Papilio" is assured. Mr. 

 Aaron's address is P. O. Box 2,500, Philadelphia, Pa., and I beg that 

 all subscriptions and communications be forwarded to him. I wish 

 most warmly to thank all my friends and correspondents for the gener- 

 ous support they have given the journal lately under my charge. 



Henry Edwards. 



ERRATA. 



On page 136 read Geometrida. 



On page 150 read Rectilinea, Fr. 



On page 151 read Michabo, Gr. 



On page 160, Nos. 8 and 9, Colias, are uncertain, and should be blank, with an?. 



