Note 71 — Chapter V
Reading edition
See also the descriptions given by Dujardin (Ann. des Sci. Nat. 1851, v. xv.) and Claparède (Anat. und Entwickl. der Wirbel osen Thiere) of the interesting genus Echinoderes, which these two eminent naturalists unite in regarding as intermediate between the Annelides and the Crustacea.