514 ([return])
[ Brehm, ‘Thierleben,’ B. i. s. 84. On baboons striking the ground, s. 61.]
515 ([return])
[ Brehm remarks (‘Thierleben,’ s. 68) that the eyebrows of the Inuus ecaudatus are frequently moved up and down when the animal is angered.]
516 ([return])
[ G. Bennett, ‘Wanderings in New South Wales,’ &c. vol. ii. 1834, p. 153. FIG. 18.-Chimpanzee disappointed and sulky. Drawn from life by Mr. Wood.]
517 ([return])
[ W. L. Martin, Nat. Hist. of Mamm. Animals, 1841, p. 405.]
518 ([return])
[ Prof. Owen on the Orang, Proc. Zool. Soc. 1830, p. 28. On the Chimpanzee, see Prof. Macalister, in Annals and Mag. of Nat. Hist. vol. vii. 1871, p. 342, who states that the corrugator supercilii is inseparable from the orbicularis palpebrarum.]