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Peristomium vs Prostomium - What's the difference?

peristomium | prostomium |

As nouns the difference between peristomium and prostomium

is that peristomium is a peristome while prostomium is (zoology) that portion of the head of an annelid situated in front of the mouth.

peristomium

English

Noun

(peristomia)
  • A peristome.
    • (Webster 1913)

    prostomium

    English

    Noun

    (prostomia)
  • (zoology) That portion of the head of an annelid situated in front of the mouth.

    • Related terms

    * prostomial (Webster 1913)