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Published online by Cambridge University Press: 01 May 2009
Echini from the Palaeozoic formations are rare, and rarer still is it to find a new form of one of the more specialized genera in good condition of preservation. It was a keen pleasure to me, therefore, when my friend Dr. F. A. Bather, of the British Museum, recently gave me the privilege of studying and reporting on the specimen here described. It proves to be a species of the highly specialized genus Lepidesthes from the Lower Carboniferous, and was sent to Dr. Bather for study by the authorities of the Hancock Museum, Newcastle-on-Tyne.
page 529 note 1 Jackson, , 1912, “Phylogeny of the Echini”: Mem. Boston Soc. Nat. Hist., vol. vii.Google Scholar
page 531 note 1 There is a specimen of L. colletti in the British Museum, E 10,677, which as it is a very rare species, is probably the only one in this country.
page 533 note 1 This difference of plates internally and externally and the difference in direction of imbrication is somewhat confusing to explain in studying specimens, but perhaps would be more readily followed by comparing my figures of Perischodomus, pl. lxiv, figs. 2, 3, and Lepidesthes, text-figs. 32–8, p. 75 (Phytogeny of the Echini).
