Sentence Examples


  • In the veliger stage many Pectinibranchia (Purpura, Nassa, &c.) exhibit, in the dorsal region behind the head, a contractile area of the body-wall.
  • E, The trochosphere passing to the veliger stage, dorsal view showing the formation of the primitive shell-sac.
  • In development they pass through the typical trochosphere and veliger stages provided with boat-like shell.
  • A, Veliger-larva of an Opisthobranch (Polycera).
  • A shell is possessed in the adult state by but few Opisthobranchia, but all pass through a veliger larval stage with a nautiloid shell (fig.

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