Homalopoma nocturnum

Homalopoma nocturnum
	Drawing of a shell of Homalopoma nocturnum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Vetigastropoda
Superfamily:	Phasianelloidea
Family:	Colloniidae
Genus:	Homalopoma
Species:	H. nocturnum
Binomial name
	Homalopoma nocturnum; (Gould, 1861)
Synonyms
	Collonia rubra Dunker, 1882; Leptothyra rubra laevicostata Pilsbry, 1901;

Homalopoma nocturnum is a species of sea snail, a marine gastropod mollusk in the family Colloniidae.[1]

Description

The size of the shell varies between 4 mm and 7 mm. The small, solid shell has a globose shape. It has 4-4½ rotund whorls, marked with subgranulose transverse ribs. The suture is obvious. The rotund aperture is iridescent and pearly within. The lip is thickened.[2]

Distribution

This marine species occurs off Southern Japan.

References

Homalopoma nocturnum (Gould, 1861). Retrieved through: World Register of Marine Species on 23 February 2013.
G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia (described as Leptothyra rubra and identified as Collonia rubra)

Lee, J.J., 1990. Bioecological study of the northern coastal area in Chenju Island. Korean Journal of Malacology 6(1):33–44

External links

"Homalopoma nocturnum". Gastropods.com. Retrieved 16 January 2019.

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[WoRMS-1] Homalopoma nocturnum (Gould, 1861). Retrieved through: World Register of Marine Species on 23 February 2013.

[2] G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia (described as Leptothyra rubra and identified as Collonia rubra)