The Descent of Man and Selection in Relation to Sex, Vol. I

by Charles Darwin

[469] Westwood, ‘Modern Class. of Insects,’ vol. i. p. 427; for crickets, p. 445.

[470] Mr. Ch. Horne, in ‘Proc. Ent. Soc.’ May 3, 1869, p. xii.

[471] The Oecanthus nivalis, Harris, ‘Insects of New England,’ 1842, p. 124.

[472] Platyblemnus: Westwood, ‘Modern. Class.’ vol. i. p. 447.

[473] B. D. Walsh, the Pseudo-neuroptera of Illinois, in ‘Proc. Ent. Soc. of Philadelphia,’ 1862, p. 361.

[474] ‘Modern Class.’ vol. ii. p. 37.

[475] Walsh, ibid. p. 381. I am indebted to this naturalist for the following facts on Hetærina, Anax, and Gomphus.

[476] ‘Transact. Ent. Soc’ vol. i. 1836, p. lxxxi.

[477] See abstract in the ‘Zoological Record’ for 1867, p. 450.

[478] Kirby and Spence, ‘Introduct. to Entomology,’ vol. ii. 1818, p. 35.