| Most species of univalves are wanderers, many bivalves are free, and multivalves become fixed at an early stage of existence. |
| Thus, all rostroconches and some helcionellacean univalves technically become stem group bivalves. |
| The whorls of spiral univalves generally take an oblique direction in reference to the imaginary axis of the shell. |
| Yet, since each of these three univalves has been this day created, these inferences are deceptive. |
| The univalves which possess a siphon are, for the most part, carnivorous, and are often most voracious creatures. |
| Hermit Crabs take possession of the deserted shells of the univalves, and crawl in pursuit of garbage along the moist beach. |
