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Haminoeidae
The family Haminoeidae (listed as Atyidae in some sources) includes small herbivorous species with thin, and sometimes reduced,  external shells that lack elevated spires. Many burrow and most are nocturnal although a few, such at Haminoea cymbalum, are diurnal. Some of the most common opisthobranchs in Hawaii are in this family though they are seldom seen due to their cryptic coloration and burrowing habits. About 32 species are known from Hawaii in about nine genera (Aliculastrum, Atys, Diniatys, Hamineobulla, Haminoea, Liloa, Limulatys, Phaneropthalmus and Smaragdinella). Phaneropthalmus and Smaragdinella are sometimes placed in a separate family, the Smaragdinellidae.

Atys kekele Pilsbry, 1921 (probably in Aliculastrum) was described from fossil material and is not covered. It appears to be close to the Indo-Pacific Aliculastrum cylindricum rather than to Aliculastrum debilis or Atys ukulele.

Aliculastrum debilis

Atys kuhnsi

Atys pittmani

Atys semistriatus





Atys ukulele

Atys sp. #5

Diniatys dentifer

Diniatys dubius





Hamineobulla(?) kawamurai

Haminoea cymbalum

Haminoea cf. natalensis

Haminoea ovalis





Haminoea sp. #1

Haminoea sp. #5

Liloa curta

Liloa porcelana





Liloa sp. #2

Limulatys muscarius

Phanerophthalmus cf. albocollaris

Phanerophthalmus smaragdinus





Phanerophthalmus sp. #1

Smaragdinella calyculata

un. sp. #2

un. sp. #3





un. sp. #4

un. sp. #5

un. sp. #7

un. sp. #9





un. sp. #10

un. sp. #13

un. sp. #14

un. sp. #15
 
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