Collonia
Collonia is a genus of small sea snails with calcareous opercula, marine gastropod mollusks in the family Colloniidae.Species within the genus Collonia include:
;The following species were brought into synonymy:
- Collonia gestroi Caramagna, 1888: synonym of Yaronia gestroi
- Collonia maculosa Pease, 1868: synonym of Homalopoma maculosa
- Collonia munda H. Adams, 1873: synonym of Bothropoma mundum
- Collonia purpurescens Dunker, 1882: synonym of Homalopoma amussitatum
- Collonia quantilla Gould, 1861: synonym of Homalopoma quantillum
- Collonia rosa Pilsbry, 1904: synonym of Neocollonia pilula rosa
