Sentence Examples with the word amphineura

In the Amphineura the nervous system, having no (From Lankester's Treatise on Zoology.

Among the Amphineura we find one pair of coelomic ducts in the Aplacophora, two pairs in the Chitons.

The Amphineura are divided into two orders: (1) the Polyplacophora, or Chitons; (2) the Aplacophora, or forms without shells, Neomenia, Chaetoderma and their allies.

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True viviparity, that is the development of the ova within the oviduct, is very rare, occurring only in one case among the Amphineura and in some aquatic and pulmonate Gastropoda.