Dwellers of the sea and shore . dwellersofseasho00crow Year: 1935 Curious Creatures 21 I tible portions often work their way through the in- testinal wall and out of the body; but this is in no wise disconcerting to the nemertean, as the punctures heal rapidly, leaving it no worse for the experience. All nemerteans have the power to regenerate lost parts, which enables them to undergo astonishing in- juries without fatal results. They can be cut completely in two, and the fore body will ultimately grow into a meckelia; the ribbon worm, with proboscis partly extruded, new and perfect worm,
Dwellers of the sea and shore . dwellersofseasho00crow Year: 1935 Curious Creatures 21 I tible portions often work their way through the in- testinal wall and out of the body; but this is in no wise disconcerting to the nemertean, as the punctures heal rapidly, leaving it no worse for the experience. All nemerteans have the power to regenerate lost parts, which enables them to undergo astonishing in- juries without fatal results. They can be cut completely in two, and the fore body will ultimately grow into a meckelia; the ribbon worm, with proboscis partly extruded, new and perfect worm, while the hind body will retain its vitality for days before dying. This division of the body can be accomplished by the animal itself, and it seems sometimes to occur as a natural process. Their tendency toward self-mutilation is so great, in fact, that they cannot easily be handled; they will often separate under the slightest touch. The planarians, a lower group of flat worms, possess the power of regeneration in an even greater degree. When they are divided not
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