[521]

Acta Ac. German. xxxiii. 1869, No. 2, p. 81.

[522]

Seventeenth Rep. Insects Illinois, 1891, p. 66.

[523]

Kessler, Acta Ac. German. li. 1887, pp. 152, 153.

[524]

In connection with this the absence of a functional mouth in the imago state of numerous Lepidoptera, and of Oestrid Diptera, should not be forgotten.

[525]

Horae Soc. ent. Ross. xxiv. 1890. p. 386.