[302]

Benham, "The Post-Larval Stage of Arenicola," J. Mar. Biol. Assoc. iii. (n.s.) 1893, p. 48.

[303]

The blood is colourless in Syllidae and Nephthydidae.

[304]

Ehlers states that some Eunicidae have green blood.

[305]

Benham, Quart. J. Micr. Sci. xxxix. 1896, p. 1.

[306]

Schaeppi, Jena. Zeit. xxviii. 1894, p. 217.