The elm, and especially the English elm, is "skeletonized" every year by an insect which it has been taken for granted is the larva of a Scolytus, which is reported to be destructive to the elm in France. A correspondent called Prof. Packard's attention to the prevalent opinion, and this is his response. It seems the matter has not yet been made clear. It is certainly no Campsidean that injures our elms.

Jan. 29, 1876.

My Dear Sir - I wish I could give a satisfactory answer to your inquiries. I have not noticed whether the European elm suffers more than the native species or not. We have as you know but few European elms about here. I would like to see some specimens of the Scolytus. Is it not possibly a true longicorn borer, Camp-sidea? I know of no Scolytus or allied beetle particularly injurious to the elm in New England, and know the Campsidea is very injurious at times in New York and New Jersey. The Canker worm is not found in the Middle States so far as I know, though common in Illinois and Missouri. Yours, very truly,

A. S. Packard, Jr.