[197]

Hubrecht, Niederländ. Archiv f. Zool. iii. 1877, p. 255.

[198]

W. K. Parker, Phil. Trans. 173, 1882, p. 139; Bridge, Phil. Trans. 169, 1878, p. 683.

[199]

Traquair, Journ. Anat. and Phys. v. 1871, p. 166; Bridge, Proc. Birm. Phil. Soc. vi. 1888, p. 118; Budgett, Trans. Zool. Soc. xvi. Pt. vii. 1902, p. 315.

[200]

Budgett, Trans. Zool. Soc. xv. 1900, p. 334.

[201]

Sagemehl, Morph. Jahrb. ix. 1884, p. 177.