Manual of Conchology; Structural and Systematic, Vol. 2: With Illustrations of the Species; Zontidę (Classic Reprint) - Hardcover

Jr., George W. Tryon

Hardcover

ISBN 10: 0656844574 ISBN 13: 9780656844579

Publisher: Forgotten Books, 2018

Synopsis

Excerpt from Manual of Conchology; Structural and Systematic, Vol. 2: With Illustrations of the Species; Zontidę

Animal protected by a spiral, heliciform shell, within which it is completely retractile; tail provided with a caudal mucus pore; jaw with a median inferior projection, not ribbed; the central tooth in the lingual ribbon is tricuspid, with the middle cusp long and narrow, laterals bicuspid, marginals acuminate, unicuspidate or bicuspidate.

Shell usually heliciform and perforate or umbilicate, often thin, and more or less transparent, the lip of the aperture sim ple, neither reflected nor with thickened margin.

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Edition details

• Publisher: Forgotten Books
• Publication date: 2018
• Language: English
• ISBN 10: 0656844574
• ISBN 13: 9780656844579
• Binding: Hardcover
• Number of pages: 268