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Published online by Cambridge University Press: 01 May 2009
page 427 note 1 Silliman's American Journ. of Sci. vol. xxx. 07, 1885, p. 45.
page 428 note 1 If these indications are the remains of lamellar appendages, they are like those of Limulus, and may be compared with the generative plate and branchigerous thoracic appendages of the Xiphosura.—H. W.