These errors, as regards the limpet, were afterwards corrected by Cuvier (though he does not refer to his original papers) in his _Memoires pour servir a l'Histoire et a l'Anatomie des Mollusques_ (1817).
[121] _Tableau elementaire de l'Histoire naturelle des Animaux._ Paris, An VI.

(1798).

8vo, pp.710.With 14 plates.
[122] Tome i., p.

123.
[123] In his _Histoire des Progres des Sciences naturelles_ Cuvier takes to himself part of the credit of founding the class Crustacea, stating that Aristotle had already placed them in a class by themselves, and adding, "_MM.

Cuvier et de Lamarck les en out distingues par des caracteres de premier ordre tires de leur circulation._" Undoubtedly Cuvier described the circulation, but it was Lamarck who actually realized the taxonomic importance of this feature and placed them in a distinct class.
[124] See A.Hyatt's _Revision of North American Poriferae_, Part II.
(Boston, 1877, p.