Cystiscinae
| Cystiscinae | |
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| Drawing of a typical animal in this subfamily | |
| Scientific classification | |
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| Subkingdom: | Eumetazoa
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| Superphylum: | Protostomia
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| Subfamily: | Cystiscinae Stimpson, 1865
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Cystiscinae are a taxonomic subfamily of minute sea snails. These are marine gastropod mollusks or micromollusks in the family Cystiscidae, and the clade Neogastropoda.
Diagnosis
Shell minute to small, white; spire immersed to low; surface smooth or axially costate; lip thickened, smooth or denticulate; external varix absent; siphonal notch absent; posterior notch absent; columella multiplicate, with combined total of usually 2 to 8 plications plus parietal lirae; internal whorls cystiscid type. Animal mantle smooth, at least partially extending over external shell surface. Internal anatomy unknown.
Genera
Genera within the subfamily Cystiscinae are as follows:
- † Topaginella Laseron, 1857
- Cystiscus Stimpson, 1865
- Crithe Gould, 1860
- Extra Jousseaume, 1894
- Intelcystiscus Ortea & Espinosa, 2001
- Inbiocystiscus Ortea & Espinosa, 2001
- Ticocystiscus Espinosa & Ortea, 2002
Comparative shell structure of three genera
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Cystiscus -
Crithe -
Extra
References
- Espinosa, J. and J. Ortea 2002. Nuevas especies de margineliformes de Cuba, Bahamas y el Mar Caribe de Costa Rica Avicennia 15:101-128.
- Ortea, J. y J. Espinosa 2001. Intelcystiscus e Inbiocystiscus (Mollusca: Neogastrópoda: Cystiscidae) dos nuevos géneros del Atlántico occidental tropical. Avicennia 14 107-114.