When we come to the Mollusca, we meet with two distinct types, so far as our subject is concerned; the naked and the shelled.
They existed, few or many, as early as any other of the Mollusca.
A superior sub-kingdom, as the Mollusca, still better exemplifies this contrast.
The shell-fish are called Mollusca, the soft-bodied animals.
In front of the radula is the so-called tongue, a fleshy projection corresponding to the sub-radular organ of other Mollusca.
The example of the Mollusca of the Sandwich Islands is by no means a solitary one.
Myriads of germinating seeds perish accordingly, being destroyed by slugs and other Mollusca, and ‘mildews,’ etc.
The shell of the Mollusca has been variously appreciated by naturalists.
This animal is a genus of the Mollusca tribe, which glitters in the night on the crest of every bursting wave.
The distribution of the Mollusca may be considered from three points of view.
1797, from Modern Latin mollusca, chosen by Linnaeus as the name of an invertebrate order (1758), from neuter plural of Latin molluscus "thin-shelled," from mollis "soft" (see melt (v.)). Linnæus applied the word to a heterogeneous group of invertebrates, not originally including mollusks with shells; the modern scientific use is after a classification proposed 1790s by French naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832).
molluscum mol·lus·cum (mə-lŭs'kəm)
n. pl. mol·lus·ca (-kə)
Any of various skin diseases marked by the occurrence of soft spherical tumors on the face or the body.