The royal natural history . TWO-STRIPED GEODESMUS (enlarged twice).. planarian worm, Planaria gcmocephala (enlarged). branch of seaweed, with the head elevated so as to exhibit its lower surface, andfeeling for a new surface of support. Planaria gonocephala, figured above, is oneof the land forms. The general structure of the intestine in all the animals of thisgroup is shown in the illustration at the top of the page. DICYEMIDS. Group of Uncertain Position. 473 To complete our account of the worms, mention must be made of the parasiticfamilies Orthonectidce and Dicyemidce, of which the serial
The royal natural history . TWO-STRIPED GEODESMUS (enlarged twice).. planarian worm, Planaria gcmocephala (enlarged). branch of seaweed, with the head elevated so as to exhibit its lower surface, andfeeling for a new surface of support. Planaria gonocephala, figured above, is oneof the land forms. The general structure of the intestine in all the animals of thisgroup is shown in the illustration at the top of the page. DICYEMIDS. Group of Uncertain Position. 473 To complete our account of the worms, mention must be made of the parasiticfamilies Orthonectidce and Dicyemidce, of which the serial position is uncertain.
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectzoology
