Cystiscus angasi

Cystiscus angasi
Shell of Cystiscus angasi (syntype at MNHN, Paris)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Family:	Cystiscidae
Subfamily:	Cystiscinae
Genus:	Cystiscus
Species:	C. angasi
Binomial name
Cystiscus angasi (Crosse, 1870) [1]
Synonyms
Cystiscus angasi var. melania(Laseron, 1948) Euliginella angasi(Crosse, 1870) Marginella amphoraLaseron, 1948 Marginella angasiCrosse, 1870 (original combination) Marginella angasi var. melaniaLaseron, 1958 Marginella minimaPetterd, 1884 Marginella shorehamiPritchard & Gatliff, 1899 Marginella simsoniTate & May, 1900

Cystiscus angasi is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae. ^[2]

Description

The length of the shell attains 1.8 mm.

Specimen from Mauritius

(Original description in Latin) The shell is very small, subovate in shape, and smooth. It is relatively thin, translucent, and possesses a brilliant luster with a milky-hyaline color. The spire is sufficiently conspicuous, though it is somewhat flattened.

There are three whorls, which are separated by a suture that is not very distinct. The body whorl is large, nearly equaling the total length of the shell, and it is tapered at the base.

The aperture is elongated and narrow. At the base, the columellar margin is not very conspicuously folded, while the outer lip is thickened and milky-white. ^[3]

Distribution

This marine species was found off Port Jackson, Australia.

References

1. Crosse, Joseph Charles Hippolyte (1870). "Diagnoses molluscorum novorum". Journal de Conchyliologie. 18: 301–304. Retrieved 12 July 2020.
2. Cystiscus angasi (Crosse, 1870) . Retrieved through: World Register of Marine Species  on July 2020.
3. Crosse H. (1870). Diagnoses molluscorum novorum. Journal de Conchyliologie. 18: 301-304 This article incorporates text from this source, which is in the public domain .

External links

• Coovert G.A. & Coovert H.K. (1995) Revision of the supraspecific classification of marginelliform gastropods. The Nautilus 109(2-3): 43-110