Description | Zoological study, dorsal view of the intestine of the marine mollusc Ischnochiton magdalenensis at x4 magnification. From specimens supplied by the Turtox General Biological Supply House, Chicago and collected in California, USA.
Plate 14 from the paper 'The structure and function of the alimentary canal of some species of Polyplacophora (Mollusca)', by Vera Fretter, Transactions of the Royal Society of Edinburgh, vol.59 (1939), pp.119-164.
Not signed. Typed label pasted to the main drawing lower right with plate title and detailed key to the figure. Some pencilled instructions to the engraver are visible. Embossed lower right: 'Lifford, Milburn & Co., London'. |