Excerpt from Manual of Conchology; Structural and Systematic, Vol. 1: With Illustrations of the Species
Behind the arms the circle of which may constitute its crown, that major portion of the head is situated which is usually dis tinctively so designated its dorsal aspect exhibits on either side an eye. The head may be joined to the body by a more or less constricted neck, or is frequently sessile upon the latter, without intervening constriction. The body, or mantle, is dorsally more or less continuous with the head, but ventrally forms a sack anteriorly open, and from which emerges the funnel or siphon (which may also be regarded as a modification of a portion of the foot of the gasteropoda). The sack or body is, in a small portion of the octopod and in the decapod species, expanded into postero lateral membranes, possessing the power of undulatory motion, and which may be considered as the equivalent of fins, in func tion, though not in appearance.
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Paperback. Condition: New. Print on Demand. This book delves into the characteristics and behaviours of cephalopods, a fascinating group of marine animals including the octopus, squid, and cuttlefish. The author, a renowned expert in this field, explores their physical adaptations, sensory perception, and ecology. The book traces the evolutionary history of cephalopods, providing insights into their ancient origins and the diversity of species found today. By examining their complex nervous systems and advanced problem-solving abilities, the author highlights the intelligence and adaptability of these creatures. Through captivating descriptions and detailed illustrations, the book unveils the hidden world of cephalopods, revealing their remarkable strategies for survival and their significance within the broader marine ecosystem. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781331945833_0
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781331945833
Quantity: 15 available