[41]

On the Senses, Instincts, and Intelligence of Animals, with special reference to Insects. Vol. LXV. International Scientific Series, 1888.

[42]

Bijd. Dierkunde, 16, 1888, p. 192.

[43]

For a review of their number see Wheeler, Psyche, vi. 1893, pp. 457, etc.

[44]

Ann. Soc. Ent. France, lxi. 1892, Bull. p. cclvi.

[45]

Mem. Ac. Belgique (2), xli. 1875, and Bull. Ac. Belgique (2), xliv. 1877, p. 710.