[9]. ‘Entomolog. Mag.,’ vol. i. p. 527, 1833.
[10]. Imhof, ‘Beiträge zur Anatomie der Perla maxima,’ Inaug. Diss., Aarau, 1881.
[11]. Mr. Edwards has meanwhile published these communications in full; cf. ‘On the length of life of Butterflies,’ Canadian Entomologist, 1881, p. 205.
[12]. When no authority is given, the observations are my own.
[13]. In the paper quoted above, Edwards, after weighing all the evidence, reduces the length of life from three to four weeks.
[14]. ‘Entomolog. Mag.,’ vol. i. p. 527, 1823.
[15]. Ibid.
[16]. Ibid.
[17]. ‘Recherches sur les mœurs des Fourmis indigènes,’ Genève, 1810.
[18]. These two female ants were still alive on the 25th of September following Sir John Lubbock’s letter, so that they live at least seven years. Cf. ‘Observations on Ants, Bees, and Wasps,’ Part VIII. p. 385; Linn. Soc. Journ. Zool., vol. xv. 1881.