Species
There are 40 species in the genus Achatinella:
subgenus Achatinella
- Achatinella apexfulva (Dixon, 1789)
- Achatinella cestus Newcomb, 1853
- Achatinella concavospira Pfeiffer, 1859
- Achatinella decora (Férussac, 1821) - extinct
- Achatinella leucorraphe (Gulick, 1873)
- Achatinella lorata Férussac, 1824
- Achatinella mustelina Mighels, 1845
- Achatinella swiftii Newcomb, 1853
- Achatinella turgida Newcomb, 1853
- Achatinella valida Pfeiffer, 1855 - extinct
- Achatinella vittata Reeve, 1850
subgenus Bulimella
- Achatinella abbreviata Reeve, 1850 - extinct
- Achatinella bulimoides Swainson, 1828
- Achatinella byronii (Wood, 1828)
- Achatinella decipiens Newcomb, 1854
- Achatinella fuscobasis (E. A. Smith, 1873)
- Achatinella lila Pilsbry, 1914
- Achatinella pulcherrima Swainson, 1828
- Achatinella pupukanioe Pilsbry & Cooke, 1914
- Achatinella sowerbyana Pfeiffer, 1855
- Achatinella taeniolata Pfeiffer, 1846
- Achatinella viridans Mighels, 1845
- Achatinella elegans Newcomb, 1853 - extinct
subgenus Achatinellastrum
- Achatinella bellula E. A. Smith, 1873
- Achatinella buddii Newcomb, 1853 - extinct
- Achatinella casta Newcomb, 1853 - extinct
- Achatinella caesia Gulick, 1858 - extinct
- Achatinella curta Newcomb, 1853
- Achatinella dimorpha Gulick, 1858 - extinct
- Achatinella fulgens Newcomb, 1853
- Achatinella juddii Baldwin, 1895 - extinct
- Achatinella juncea Gulick, 1856 - extinct
- Achatinella lehuiensis E. A. Smith, 1873 - extinct
- Achatinella livida Swainson, 1828 - extinct
- Achatinella papyracea Gulick, 1856 - extinct
- Achatinella phaeozona Gulick, 1856
- Achatinella spaldingi Pilsbry & Cooke, 1914 - extinct
- Achatinella stewartii (Green, 1827)
- Achatinella thaanumi Pilsbry & Cooke, 1914 - extinct
- Achatinella vulpina (Férussac, 1824)
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“Single-mindedness is all very well in cows or baboons; in an animal claiming to belong to the same species as Shakespeare it is simply disgraceful.”
—Aldous Huxley (1894–1963)
“Not only does every animal live at the expense of some other animal or plant, but the very plants are at war.... The individuals of a species are like the crew of a foundered ship, and none but good swimmers have a chance of reaching the land.”
—Thomas Henry Huxley (1825–95)
“Thus all probable reasoning is nothing but a species of sensation. ‘Tis not solely in poetry and music, we must follow our taste and sentiment, but likewise in philosophy, When I am convinc’d of any principle, ‘tis only an idea which strikes more strongly upon me. When I give the preference to one set of arguments above another, I do nothing but decide from my feeling concerning the superiority of their influence.”
—David Hume (1711–1776)