Musculium

Musculium is a genus of small freshwater clams, aquatic bivalve molluscs in the family Sphaeriidae, the fingernail clams and pea clams.

Species
Species and subgenera within this genera include:

Subgenus Musculium Link, 1807
 * Musculium lacustre (O. F. Müller, 1774)
 * Musculium transversum (Say, 1829)

Subgenus ?
 * Musculium forbesi (Philippi, 1869)
 * Musculium lauricochae (Philippi, 1869)
 * Musculium titicacense (Pilsbry, 1924)