Chapter Iii. of the Present Volume, the Pine Processionary: the

Procession, has appeared in the Fortnightly Review; and Chapter XIV., The Cabbage Caterpillar, the last essay but one from the author’s pen, written, I believe, within two or three years of his death, was first printed in the Century Magazine, some time before its publication in the original. It does not form part of the Souvenirs entomologiques. The remaining essays are new in their English guise.

Once more I wish to record my gratitude to Miss Frances Rodwell for the faithful assistance which she has lent me in the preparation of this volume, as in that of all the earlier volumes of the series.

Alexander Teixeira de Mattos.

Chelsea, 1916.