Chaetognatha

• genus Sagitta

  Chief genus of Chaetognatha including the largest arrowworms.

• genus Spadella

  Marine worms resembling the sagittas but with a broader body and only one pair of...

Terebellidae

• Polycirrus

  Genus of soft-bodied polychete marine worms.

• Terebella

  Type genus of Terebellidae; tube-forming marine polychete worms with many filamentous...

Fasciolidae

• Fasciola

  A genus of Fasciolidae.

• Fasciolopsis

  A genus of Fasciolidae.

Hirudinidae

• Hirudo

  Type genus of the family Hirudinidae.

• Haemopis

  Leeches.

Taeniidae

• genus Echinococcus

  Tapeworms.

• genus Taenia

  Type genus of the family Taeniidae: tapeworms.

Ascaridae

• Ascaris

  Type genus of the family Ascaridae: roundworms with a three-lipped mouth.

• Ascaridia

  Roundworm having a preanal sucker.

Also contains

• Schistosoma

  Type genus of the family Schistosomatidae: blood flukes.

• Enterobius

  Pinworms.

• Anguillula

  A genus of Cephalobidae.

• Tylenchus

  Type genus of the family Tylenchidae.

• Dracunculus

  Type genus of the family Dracunculidae.

• Branchiobdella

  Type genus of the Branchiobdellidae: a small worm that lives on the gills or surface...