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Chrysallida cf. cossmanii
Hornung & Mermod, 1924
 
Chrysallida cf. cossmanii: shell
Maximum size:  2 mm shell length.

Identification:  This species has an elongate-oval shell with axial ribs and fine spiral striae. The profile varies from relatively slender to relatively robust.

Natural history:  Shells of Chrysallida cf. cossmanii are moderately common in beach drift. According to Kay (1979), they are found in sand samples to depths of 65 m (213 ft) and the species is particularly common in highly protected sites on Oahu.

Distribution:  Maui, Oahu and Midway: widely distributed in the western and central Pacific.

Taxonomic notes: This species is listed as Pyrgulina oodes in Kay, 1979. It's listed as Chrysallida aff. cossmanii in Severns, 2011.

Photo:  CP: composite photo, three shells; largest 1.9 mm: beach drift, Makuleia Bay, Maui; fall, 1983.

Observations and comments:

Note 1:  ( )
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