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Published online by Cambridge University Press: 01 May 2009
For some years past, the serious attention of several eminent malacologists has been directed to the endeavour to determine the affinities of the Brachiopoda, or the exact position the group should occupy in the animal kingdom. The Invertebrata have been grouped into five sub-kingdoms, namely, the Frotozoa, Cœlenterata, Annuloida, Annulosa, and Mollusca, and for many years the Brachiopoda have been considered to constitute a separate class in the subkingdom Mollusca, a view still maintained by some distinguished naturalists.
page 264 note 1 Annales des Sciences Naturelles, 4ème série, Zool. vol. xv. 1861.Google Scholar
page 264 note 2 Memoirs of the Boston Society of Natural History, vol. ii.
page 265 note 1 Palæontologia Indica, Brachiopoda, vol. iv. 1872.
page 266 note 1 An Orthis (possibly a Clistenterate) has been found in the Menevian group, but to whatever division, it may belong does not matter, as Lingulella occurs at the base of the Cambrians.
page 266 note 2 See a memoir by Prof. King, entitled, “An Attempt to Classify the Tetrabranchiate Cephalopods.” Annals of Natural History, in 1845.
page 266 note 3 Quart. Journ. Geol. Soc. vol. xxix. 1872.Google Scholar
page 266 note 4 First described by Prof. Allman (Quart. Journ. Microscopical Science, N. S. vol. ix. p. 57), next Ossian Sars (id. N. S. vol. xiv. p. 1), previously Ray Lankester has published some valuable “Remarks on the Affinities of Rhabdopleura” in th e same work, id p. 77.
page 266 note 5 Joh. Müller, Ueber die Larven und die Metamorphose dea Echinoderm p. 22, Taf. 2, fig.1, 1849.
page 267 note 1 Dawson, Carpenter, Rupert Jones, and others, consider Eozoon to be Rhizopod or Foraminifer; while King, Rowney, Carter, and others, firmly maintain that it is a mineral production.
page 269 note 1 These numbers must of course be considered provisional, see Table.
page 270 note 1 It has been observed by Eobert MacAndrew that although the size attained by Mollusca (and no doubt by other animals) may be influenced by various conditions in different localities, as a general rule each species attains its greatest size, as well as its greatest number, in the latitudes best suited to its general development; and that whether a species be Arctic, Boreal, Celtic, or Lusitianian, it will grow largest in the region to which it belongs.