Caecum (gastropod) - Shell Description

Shell Description

The shells in this genus, like the others in the family,are very small with a length between 2 mm and 6 mm. >Their colour is white to yellowish white and some are almost translucent. They are unusual in that the teleoconch of the adult shell is a curving tube for most of its length. In the first stage of the shell it is spiral-shaped but soon becomes cylindrical. The shell is sealed with a permanent calcareous plug at one end and (when the animal has withdrawn into the shell) with a circular,multispiral, horny operculum at the other end, the shell aperture. The sculpture is smooth or consists of a close-set, large number of annular ridges.

Read more about this topic:  Caecum (gastropod)

Other articles related to "shell description, shells, shell, description":

Lobatus Gigas - Anatomy - Shell Description - Historic Illustrations
... contains three illustrations showing the morphology of adult queen conch shells from different perspectives ... The shells are shown as if balancing on the edge of the lip and/or the apex this was presumably done for artistic reasons as these shells cannot be balanced like this ... Considered as one of the most prized and sumptuous shell publications of the 19th century, a series of books titled Illustrations conchyliologiques ou description et figures de ...
Lambis Lambis - Shell Description
... The maximum shell length for this species is up to 29 cm, and average length stands for 18 cm ... The color of the shell is highly variable, being white or cream externally and often presenting brown, purplish or bluish black patches ...

Famous quotes containing the words description and/or shell:

    The next Augustan age will dawn on the other side of the Atlantic. There will, perhaps, be a Thucydides at Boston, a Xenophon at New York, and, in time, a Virgil at Mexico, and a Newton at Peru. At last, some curious traveller from Lima will visit England and give a description of the ruins of St Paul’s, like the editions of Balbec and Palmyra.
    Horace Walpole (1717–1797)

    There are no small number of people in this world who, solitary by nature,
    always try to go back into their shell like a hermit crab or a snail.
    Anton Pavlovich Chekhov (1860–1904)