velum

Example Sentences

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There are about 40 tentacles, the velum at the base of which extends upwards for a considerable distance without being festooned.

From Freshwater Sponges, Hydroids & Polyzoa by Annandale, Nelson

The larva for a time swims freely in the sea-water, having a circlet of cilia round the body in front of the mouth, forming the velum.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" by Various

The lophophore bears about 20-25 tentacles, which are very slender and of moderate length; the velum at their base is narrow; as a rule the lophophore is accurately circular.

From Freshwater Sponges, Hydroids & Polyzoa by Annandale, Nelson

There is a veliger stage in development, but the velum is reduced.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

The polypide has normally about 60 tentacles, the velum at the base of which is narrow and by no means strongly festooned.

From Freshwater Sponges, Hydroids & Polyzoa by Annandale, Nelson