A Conchological Manual

A Conchological Manual

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Description

"[...]or two smaller separate portions, named "accessary plates" by some authors. They are fixed by means of cartilages, on the back of the hinge.-The engraving, fig. 7, represents the accessary valves of a species of Pholas, which was on this account arranged by Linnaeus with the Multivalves. Nearly allied to the Pholades is a set of shells to which De Blainville has given the name "Tubicolae," or inhabitants of tubes. In this case, the bivalve shell is connected with a testaceous tube or pipe, to which it is attached either by one or by both valves, or in which it lies attached only by the cartilages of the animal. In the genus Aspergillum, the two small valves are soldered into the sides of the tube in such a manner as to constitute a part of it. One of these shells, called the Water-spout, might be taken up by a[...].""show more

Product details

  • Paperback | 314 pages
  • 152 x 229 x 17mm | 422g
  • Createspace
  • United States
  • English
  • black & white illustrations
  • 1507506651
  • 9781507506653