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:
- Crithe <small>Gould, 1860</small>
- Cystiscus <small>Stimpson, 1865:55</small>
- Extra <small>Jousseaume, 1894</small> - with the only species Extra extra <small>Jousseaume, 1894</small>
- Gibberula <small>Swainson, 1840</small>
- Inbiocystiscus <small>Ortea and Espinosa, 2001</small>
- Intelcystiscus <small>Ortea and Espinosa, 2001</small>
- âÂÂMarginocystiscus <small>Landau, C. M. Silva & Heitz, 2016</small>
- Pachybathron <small>Gaskoin, 1853</small>
- Persicula <small>Schumacher, 1817</small>
- Ticocystiscus <small>Espinosa and Ortea, 2002</small>
- Ticofurcilla <small>Espinosa & Ortea, 2002</small>
- âÂÂTopaginella <small>Laseron, 1957:288</small>
Comparative shell structure of three genera
References
- 2002. Nuevas especies de margineliformes de Cuba, Bahamas y el Mar Caribe de Costa Rica Avicennia 15:101-128.
- 2001. Intelcystiscus e Inbiocystiscus (Mollusca: Neogastrópoda: Cystiscidae) dos nuevos géneros del Atlántico occidental tropical. Avicennia 14 107-114.