[499] I am indebted to Mr. Walsh, of Illinois, for having sent me extracts from Leconte’s ‘Introduction to Entomology,’ p. 101, 143.

[500] M. P. de la Brulerie, as quoted in ‘Journal of Travel,’ A. Murray, vol. i. 1868, p. 135.

[501] Mr. Doubleday informs me that “the noise is produced by the insect raising itself on its legs as high as it can, and then sinking its thorax five or six times, in rapid succession, against the substance upon which it is sitting.” For references on this subject see Landois, 'Zeitschrift für wissen. Zoolog.’ B. xvii. s. 131. Olivier says (as quoted by Kirby and Spence, ‘Introduct.’ vol. ii. p. 395) that the female of Pimelia striata produces a rather loud sound by striking her abdomen against any hard substance, “and that the male, obedient to this call, soon attends her and they pair.”

[502] Apatura Iris: ‘The Entomologist’s Weekly Intelligencer,’ 1859, p. 139. For the Bornean Butterflies see C. Collingwood, ‘Rambles of a Naturalist,’ 1868, p. 183.

[503] See my ‘Journal of Researches,’ 1845, p. 33. Mr. Doubleday has detected (‘Proc. Ent. Soc.’ March 3rd, 1845, p. 123) a peculiar membranous sac at the base of the front wings, which is probably connected with the production of the sound.

[504] See also Mr. Bates’ paper in ‘Proc. Ent. Soc. of Philadelphia,’ 1865, p. 206. Also Mr. Wallace on the same subject, in regard to Diadema, in ‘Transact. Entomolog. Soc. of London,’ 1869, p. 278.

[505] ‘The Naturalist on the Amazons,’ vol. i. 1863, p. 19.

[506] See the interesting article in the ‘Westminster Review,’ July, 1867, p. 10. A woodcut of the Kallima is given by Mr. Wallace in Hardwicke’s 'Science Gossip,’ Sept. 1867, p. 196.

[507] See the interesting observations by Mr. T. W. Wood, ‘The Student,’ Sept. 1868, p. 81.

[508] Mr. Wallace in ‘Hardwicke’s Science Gossip,’ Sept. 1867, p. 193.