[479] See an interesting article, “The Writings of Fabre,” in ‘Nat. Hist. Review,’ April, 1862, p. 122.
[480] ‘Journal of Proc. of Entomolog. Soc.’ Sept. 7th, 1863, p. 169.
[481] P. Huber, ‘Recherches sur les Mœurs des Fourmis,’ 1810, p. 150, 165.
[482] ‘Proc. Entomolog. Soc. of Philadelphia,’ 1866, p. 238-239.
[483] Quoted by Westwood, ‘Modern Class. of Insects,’ vol. ii. p. 214.
[484] Pyrodes pulcherrimus, in which the sexes differ conspicuously, has been described by Mr. Bates in ‘Transact. Ent. Soc.’ 1869, p. 50. I will specify the few other cases in which I have heard of a difference in colour between the sexes of beetles. Kirby and Spence (‘Introduct. to Entomology,’ vol. iii. p. 301) mention a Cantharis, Meloe, Rhagium, and the Leptura testacea; the male of the latter being testaceous, with a black thorax, and the female of a dull red all over. These two latter beetles belong to the Order of Longicorns. Messrs. R. Trimen and Waterhouse, junr., inform me of two Lamellicorns, viz., a Peritrichia and Trichius, the male of the latter being more obscurely coloured than the female. In Tillus elongatus the male is black, and the female always, as it is believed, of a dark blue colour with a red thorax. The male, also, of Orsodacna atra, as I hear from Mr. Walsh, is black, the female (the so-called O. ruficollis) having a rufous thorax.
[485] ‘Proc. Entomolog. Soc. of Philadelphia,’ 1864, p. 228.
[486] Kirby and Spence, ‘Introduct. Entomolog.’ vol. iii. p. 300.
[487] Kirby and Spence, ibid. vol. iii. p. 329.
[488] ‘Modern Classification of Insects,’ vol. i. p. 172. On the same page there is an account of Siagonium. In the British Museum I noticed one male specimen of Siagonium in an intermediate condition, so that the dimorphism is not strict.