[372]. With, Vid. Medd. 1904, p. 137.

[373]. Silvestri, Redia, ii., 1904, fasc. 2, p. 257.

[374]. Arch. mikr. Anat. Bd. i., 1865, p. 428.

[375]. A. Basse, Zeitschr. wiss. Zool. lxxx., 1906, p. 259.

[376]. Ann. Sci. nat. (2), xiv., 1840, p. 269, and xvii., 1842, p. 193.

[377]. Zool. Jahrb. Anat. iii., 1889. This paper contains a bibliography.

[378]. Morph. Jahrb. xxii., 1895, p. 491.

[379]. C. R. Ac. Sci. cxviii., 1894, p. 817.

[380]. Tr. R. Soc. Edinb. xlv., 1908, p. 641. This contains a Bibliography of recent literature. See also Richters, Zool. Anz. xxx., 1906, p. 125, and Heinis, Zool. Anz. xxxiii., 1908, p. 69.

[381]. P. Zool. Soc. 1897, p. 790.