In*du"sial (?), a. [See Indusium.]

Of, pertaining to, or containing, the petrified cases of the larvae of certain insects.

Indusial limestone Geol., a fresh-water limestone, largely composed of the agglomerated cases of caddice worms, or larvae of caddice flies (Phryganea). It is found in Miocene strata of Auvergne, France, and some other localities.


© Webster 1913.

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