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Key to Irish Chitons
Species Description


Acanthochitona crinita  (Pennant, 1777) [back to the Key] | [next] | [previous]
Length: to 34 mm

Tegmentum colour: variable, typically from creamy white to olive green and brown, with white and yellow blotches; the jugal area may be lighter (cream or beige) or with dark bluish longitudinal streaks.

Sculpture: valves usually beaked. The jugal area with close, longitudinal riblets; latero-pleural areas covered with typically widely spaced granules of variable shape, from oval to more or less elongate drop-shaped.

Girdle: broad and usually covered with two kinds of spicules: evenly distributed short spicules, and longer thick spicules, curved, interspersed amongst them, with 18 large tufts of spines arranged around the head and at the sutures.

Geographic range: Found in the north Atlantic from Scotland, England, north coasts of France and Spain, west coast of Portugal, and most likely in the Mediterranean Sea.

Similar species: Acanthochitona discrepans, Acanthochitona fascicularis


Taxonomy & Synonymy:

ORDER: Chitonida Thiele, 1909

FAMILY: Acanthochitonidae Pilsbry, 1893


Acanthochitona crinita  (Pennant, 1777)


List of synonymised names available at:


For more information on this species, see:

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