[17] On the Breeding of the Larger Felidæ, ‘Proc. Zoolog. Soc.,’ 1861, p. 140.
[18] Sleeman’s ‘Rambles in India,’ vol. ii. p. 10.
[19] Wiegmann’s ‘Archiv. fur Naturgesch.,’ 1837, s. 162.
[20] Rengger ‘Säugethiere,’ etc., s. 276. On the parentage of the guinea-pig, see also Isid. Geoffroy St.-Hilaire, ‘Hist. Nat. Gen.’ I sent to Mr. H. Denny of Leeds the lice which I collected from the wild aperea in La Plata, and he informs me that they belong to a genus distinct from those found on the guinea-pig. This is important evidence that the aperea is not the parent of the guinea-pig; and is worth giving, as some authors erroneously suppose that the guinea-pig since being domesticated has become sterile when crossed with the aperea.
[21] Although the existence of the Leporides, as described by Dr. Broca (‘Journal de Phys.,’ tom. ii. p. 370), has been positively denied, yet Dr. Pigeaux (‘Annals and Mag. of Nat. Hist.,’ vol. xx., 1867, p. 75) affirms that the hare and rabbit have produced hybrids.
[22] ‘Quadrupeds of North America,’ by Audubon and Bachman, 1846, p. 268.
[23] Loudon’s ‘Mag. of Nat. Hist.,’ vol. ix., 1836, p. 571; Audubon and Bachman’s ‘Quadrupeds of North America,’ p. 221.
[24] Flourens, ‘De l’Instinct,’ etc., 1845, p. 88.
[25] See ‘Annual Reports Zoolog. Soc.,’ 1855, 1858, 1863, 1864; ‘Times’ newspaper, Aug. 10th, 1847; Flourens, ‘De l’Instinct,’ p. 85.
[26] ‘Säugethiere,’ etc., s. 34, 49.