[357]

Semper, Animal Life, Internat. Sci. Series, London, 1881, p. 321.

[358]

Moreau, op. cit. pp. 3, 4.

[359]

J. Müller, Vergl. Anat. d. Myxinoiden, Pt. iii. (1839), Berlin, 1841, p. 186. For an account of the vascular system of Bdellostoma see Jackson, Journ. Cincinnati Soc. Nat. Hist. xx. 1901, p. 13.

[360]

T. Jeffery Parker, Phil. Trans. 177, Pt. ii. 1886, p. 702. For references to Elasmobranchs in general, see Parker, op. cit. p. 725.

[361]

In the common Dog-Fish (Scyllium canicula) each lateral vein joins the posterior cardinal near the junction of the latter with the Cuvierian duct, the subclavian vein from the pectoral fin opening directly into the corresponding Cuvierian duct.