''Bipalium fuscatum'' is a species of

land planarian Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms. These flatworms are mainly predators of other invertebrates, which they hunt, attack and capture using physical force and the adhesive and digestive proper ...

first described by

William Stimpson William Stimpson (February 14, 1832 – May 26, 1872) was a noted American scientist. He was interested particularly in marine biology. Stimpson became an important early contributor to the work of the Smithsonian Institution and later, direc ...

in 1857. This hammerhead flatworm may be able to survive for days in a human lung as a pseudoparasite.

References

Geoplanidae Animals described in 1857 {{flatworm-stub