Abstract
The family Pyramidellidae contains a number of species of gastropod molluscs of similar structure and mode of life.The shell is calcareous and spirally wound and may be closed by an operculum. The foot bears a transverse fold anteriorly, the mentum (Fig. 1, MT), separating the opening of the penial sheath (PO) below from the mouth (M) above. It has a lateral glandular streak on each side (Fig. 2), presumably sensory.The head has ear-shaped tentacles (Fig. 1, T), richly innervated and with cilia setting up a strong water current, so that they constitute a powerful sensory mechanism. The eyes (E) lie between the tentacles.
Publisher
Cambridge University Press (CUP)
Reference29 articles.
1. The pallial organs in the aspidobranch Gastropoda and their evolution throughout the Mollusca
2. Faunistic and biological notes on marine invertebrates. I;Rasmussen;Vidensk. Medd. naturh. Foren. Kbh.,1944
3. The British marine Mollusca;Winckworth;Journ. Conch.,1932
4. Ethologie de quelques Odostomia et d'un Monstrillide parasite de l'un d'eux;Pelseneer;Bull. Sci. France Belgique,1914
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