Umbonium
Umbonium, sometimes known as "button top shells", is a genus of sea snails, marine gastropod molluscs in the family Trochidae, the top snails.
Shell description
The shells of the species in this genus are low-spired and shaped like a button, and the umbilicus of the shell is often completely covered with a thick and smooth callus.
Species
Species in the genus Umbonium include:
- Umbonium callosum Sowerby
- Umbonium capillata A. A. Gould, 1861
- Umbonium conicum (A. Adams & Reeve, 1850)
- Umbonium costatum (Valenciennes in Kiener, 1838 in 1834-50)
- Umbonium elegans (Kiener, 1838)
- Umbonium eloiseae Dance, Moolenbeek & Dekker, 1992
- Umbonium fenestrata T. Kuroda,
- Umbonium floccata G. B. Sowerby III, 1903
- Umbonium giganteum (Lesson, 1833 in 1832-35)
- Umbonium guamensis J. R. C. Quoy & J. P. Gaimard, 1834
- Umbonium guamensis selenomphala H. A. Pilsbry, 1905
- Umbonium moniliferum (Lamarck, 1822 in 1815-22)
- Umbonium nitida A. Adams, 1863
- Umbonium omphalotropis A. Adams, 1863
- Umbonium polita A. Adams, 1862
- Umbonium pulchella A. Adams in H. & A. Adams, 1854
- Umbonium roseopunctata T. Kuroda & T. Kinoshita
- Umbonium rufula A. A. Gould, 1861
- Umbonium sagittata (Hinds, 1845)
- Umbonium sanguinea H. A. Pilsbry, 1905
- Umbonium suturale (Lamarck, 1822 in 1815-22)
- Umbonium thomasi (Crosse, 1862-a)
- Umbonium vestiarium (Linnaeus, 1758)
- Umbonium vestiarium (Linnaeus, 1758)
- Umbonium zelandica (Hombron & Jacquinot,1855)
References