{19} .39 inch.—­ Translator’s Note.

{20} These experiments are described in the author’s essay on the Mason Bees entitled Fragments on Insect Psychology.—­Translator’s Note.

{21} A species of Wasp.—­Translator’s Note.

{22} In Chap.  VIII. of the present volume.—­Translator’s Note.

{23} Jules Michelet (1798-1874), author of L’Oiseau and L’Insecte, in addition to the historical works for which he is chiefly known.  As a lad, he helped his father, a printer by trade, in setting type.—­Translator’s Note.

{24} Chapter III. of the present volume.—­Translator’s Note.

{25} A species of Dung-beetle.  Cf.  The Life and Love of the Insect, by J. Henri Fabre, translated by Alexander Teixeira de Mattos:  chap. v.—­Translator’s Note.

{26} A species of Beetle.—­Translator’s Note.

{27} Cf.  Insect Life, by J. H. Fabre, translated by the author of Mademoiselle Mori:  chaps. i. and ii.; The Life and Love of the Insect, by J. Henri Fabre, translated by Alexander Teixeira de Mattos:  chaps. i. to iv.—­Translator’s Note.

{28} Chapter II.—­Translator’s Note.

{29} .39 inch.—­Translator’s Note.

{30} The Processionaries are Moth-caterpillars that feed on various leaves and march in file, laying a silken trail as they go.—­Translator’s Note.

{31} The weekly half-holiday in French schools.—­Translator’s Note.

{32} Cf.  Social Life in the Insect World, by J. H. Fabre, translated by Bernard Miall:  chap. xiv.—­Translator’s Note.

{33} Cf.  Insect Life, by J. H. Fabre, translated by the author of Mademoiselle Mori:  chap. v.—­Translator’s Note.

{34} The Scolia is a Digger-wasp, like the Cerceris and the Sphex, and feeds her larvae on the grubs of the Cetonia, or Rose-chafer, and the Oryctes, or Rhinoceros Beetle.  Cf.  The Life and Love of the Insect, by J. Henri Fabre, translated by Alexander Teixeira de Mattos:  chap. xi.—­Translator’s Note.

{35} Cf.  Social Life in the Insect World, by J. H. Fabre, translated by Bernard Miall. chap. xiii., in which the name is given, by a printer’s error, as Philanthus aviporus.—­Translator’s Note.

{36} Or Bird Spiders, known also as the American Tarantula.—­Translator’s Note.

{37} .059 inch.—­Translator’s Note.

{38} The Ichneumon-flies are very small insects which carry long ovipositors, wherewith they lay their eggs in the eggs of other insects and also, more especially, in caterpillars.  Their parasitic larvae live and develop at the expense of the egg or grub attacked, which degenerates in consequence.—­Translator’s Note.

{39} One of the largest families of Beetles, darkish in colour and shunning the light.—­Translator’s Note.

{40} The Iulus is one of the family of Myriapods, which includes Centipedes, etc.—­Translator’s Note.

{41} A species of Land-snail.—­Translator’s Note.