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Rissoella longispira
Kay, 1979
 
Rissoella longispira
Maximum size:  1.5 mm shell length (Kay, 1979).

Identification:  This species has a small, transparent-white shell with an angled umbilicus. It is larger than Rissoella cf. confusa with a more prominent umbilicus. Live animals are intricately blotched with rose-brown, white, black and yellow.

Natural history:  Shells of  Rissoella longispira are moderately rare in beach drift (perhaps due to their fragility). Live animals are commonly found in shallow rocky habitats, particularly at moderately exposed to exposed sites. According to Kay (1979), shells are found in sand samples to about 10 m (33 ft).

Distribution:  Maui, Oahu and Midway.

Taxonomic notes: 

Photo:  CP: Maui; spring, 2001.

Observations and comments:

Note 1:  ( )
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