[190] ‘Zoology of the Voyage of H.M.S. Beagle,’ 1841, p. 6.
[191] Bechstein, ‘Naturgeschichte Deutschlands,’ B. iv. 1795, s. 31, on a sub-variety of the Monck pigeon.
[192] This woodcut has been engraved from a beautiful drawing, most kindly made for me by Mr. Trimen; see also his description of the wonderful amount of variation in the coloration and shape of the wings of this butterfly, in his, ‘Rhopalocera Africæ Australis,’ p. 186. See also an interesting paper by the Rev. H. H. Higgins, on the origin of the ocelli in the Lepidoptera in the ‘Quarterly Journal of Science,’ July, 1868, p. 325.
[193] Jerdon, ‘Birds of India,’ vol. iii. p. 517.
[194] ‘Variation of Animals and Plants under Domestication,’ vol. i. p. 254.
[195] When the Argus pheasant displays his wing-feathers like a great fan, those nearest to the body stand more upright than the outer ones, so that the shading of the ball-and-socket ocelli ought to be slightly different on the different feathers, in order to bring out their full effect, relatively to the incidence of the light. Mr. T. W. Wood, who has the experienced eye of an artist, asserts (‘Field,’ Newspaper, May 28, 1870, p. 457) that this is the case; but after carefully examining two mounted specimens (the proper feathers from one having been given to me by Mr. Gould for more accurate comparison) I cannot perceive that this acme of perfection in the shading has been attained; nor can others to whom I have shewn these feathers recognise the fact.
[196] ‘The Reign of Law,’ 1867, p. 247.
[197] ‘Introduction to the Trochilidæ,’ 1861, p. 110.
[198] Fourth edition, 1866, p. 241.
[199] ‘Westminster Review,’ July, 1867. ‘Journal of Travel,’ vol. i. 1868, p. 73.