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Conus Terminology Glossary

Outer shell layer consisting of mainly sclerotised proteins.

Abapical column structure forming the central axis for development

Absolute weight (grams) per millimeter of shell length giving an estimate of shell thickness.

Adapical tip of shell

Prematamorphic whorls of the shell

Postmetamorphic whorls of the shell

Interspace between subsutural ridges on Teleoconch

Ridges on Teleoconch

Widest part of shell body forming margin between shell body and spire.

Area of shell adapical of the shoulder excluding the shell body

Outer edge of aperture

Opening of shell

Notch between the shoulder and outer lip of aperture.

Canal/fasciole on columella of shell.

Toward the apex

Toward the base

Third of shell towards apex

One complete coil of the spiral shell.

Position of maximum diameter of last whorl

Whorls of spire excluding those constituting the protoconch

Whorl that forms the shell body excluding the spire.

Threads in a direction perpendicular to the shell axis

Threads in the direction of the shell axis.

Streaks in a direction perpendicular to the shell axis

Cords sprialing in a direction perpendicular to the shell axis

Number of whorls unknown but less than two.

Number of whorls unknown but more than two.

An area of a shell approximately midway between its apex and columella.

A sharp-edged ridge on the shoulder of the shell

Ridges spiraling in a direction perpendicular to the shell axis

A thin narrow groove, channel, line or band

A small projection or outgrowth

Small grains, pellets or particles.

Wavy, axially elongate areas of colour

Triangular areas of colour with pointed apices.

Underlying base colour of shell

Colour of appearance of a shell

Round area of colour

Solid usually axiallly or spirally oriented areas of colour

Narrow or rectangular areas of colour spirally or axially oriented.

Regularly or irregularly shaped areas of colour.

Wide to rectangular usually spirally elongate areas of colour.

Solid mainly spiral and sometimes axial uninterupted areas of colour broader than streaks.

Very small points of colour.

Irregularly shaped areas of colour, not elongate and less contrasting with ground colour than blotches.

Irregularly shaped areas of colour, not elongate and contrasting with ground colour.

Rectangular areas of colour broader than broad lines with variable orientation.

With one or more longitudinal grooves or channels.

Having wart-like nodules or fine knobs

Ridged with carina or keel

With small spots, points or depressions