Only one of the two internal carotid arteries is shown in Fig. 199.
J. Müller, U. d. Bau u. d. Grenzen d. Ganoiden, Berlin, 1846, p. 43; Ramsay Wright, Standard Nat. Hist. iii. pp. 48, 49.
Baldwin Spencer, Macleay Memorial Volume, 1892, p. 1.
Newton Parker, Trans. Roy. Irish Acad. xxx. 1892, p. 173.
According to Boas; for reference, see p. [329].