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Marginellids & Cysticids
The families Marginellidae and Cystiscidae (formerly lumped under Marginellidae) are small prosobranch snails (usually less than 5 mm) that often have transparent shells. In many cases, the mantle is brightly colored and shows through the shell allowing them to be mistaken for cephalaspideans. They can be distinguished from the latter by the bulbous eyes at the bases of their cephalic tentacles. Several other families of prosobranchs also have small members in which the mantle colors show through the shell.

Representative Hawaiian species:
Crithe sp. #1
Crithe sp. #1
CP: Maliko Bay, Maui
April 19, 2008
Cystiscus sandwicensis
Cystiscus sandwicensis
CP: Hekili Point, Maui
Oct. 5, 2002
unidendified cysticid sp. #1
un. cysticid sp. #1
CP: Airport Beach, Maui
April 12, 2012
For more information see:
 
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