THE COCCIDÆ OF BRITISH NORTH AMERICA

Extract

Since writing my first paper on the Coccidœ of British North America, a very large amount of new and interesting scale insects have been sent to me for study by Dr. Fletcher and Mr. John Dearness. In nearly every instance the twigs sent showed beyond question that the insects occurred upon the food-plants infested in injurious numbers; especially so of those found on blackberry, hazel-nut, spiræa, viburnum and oak. The following are new to the Canadian list:

Pulvinaria tiliœ, King and Ckll., 1898. (Native.) Mr. John Dearness sent these from Thedford, ont, on Cephalanthus occidentalis. IT was first recorded fronl Mass., found on Tilia Americana, Quercus and Ulmus, and described as a sub-sp. of P. innumerabilis, but further study proves it to be quite different from that species, and it should stand as P. tiliœ.