Hosta

Mellitidae is a family of sand dollars, in the echinoderm order Clypeasteroida. These irregular sea urchins bury themselves in soft sediment in shallow seas.

Genera

The World Register of Marine Species includes the following genera in the family:-^[1]

• Encope L. Agassiz, 1840
• Lanthonia Coppard, 2016
• Leodia Gray, 1851
• Mellita L. Agassiz, 1841
• Mellitella Duncan, 1889

• 
  Encope perspectiva (MNHN)
• 
  Lanthonia longifissa.
• 
  Mellita quinquiesperforata.
• 
  Leodia sexiesperforata
• 
  Mellitella stokesii (MNHN)

References