corneous

The operculum is oval, corneous and dark brown in color.

The shells are thin and corneous and rather transparent.

The shell is moderately in size for the genus, without hairs and brownish corneous.

The mineral is rather sectile, and consequently was earlier known as corneous lead.

There are two corneous plates or jaws.

Some specimens have the apex coloured, corneous or with a yellow hue.

The outermost layer is the periostracum, composed of a corneous.

The shell is pale corneous in color, sometimes fulvous.

The operculum, where known, is calcareous or corneous, and spiral in structure.

The corneous operculum is usually well-formed and shows only a few spirals.

The large, yellow operculum is corneous and thin.

The periphery is broadly rounded, corneous with a few varicoid white stripes.

The operculum is light corneous, spiral and closely fitting the aperture.

The corneous operculum is paucispiral, and has an eccentric nucleus.

This operculum structure has a corneous base with a heavy calcareous overlay.

The horny operculum is composed of corneous material.

Corneous opercula are made out of the protein conchiolin.

They have a corneous operculum which fits the aperture snugly.

Like other species in this genus, this snail has a corneous operculum.

Females lay 10,000 to 100,000 eggs contained in a corneous capsule from which larvae escape and settle to the bottom.

The shell of this species is perforate, trochoid, thin, shining, pellucid and dark corneous.

Muricids lay eggs in protective corneous capsules the size and shape of which vary with the species.

The conoidal spire has an acute, corneous apex.

The nucleus of the corneous operculum is situated either at the anterior end or the mid-inner margin.

The corneous, claw-like operculum partially covers the shell aperture.