- A, side view of the head region of Nereis cultrifera; B, dorsal view of the same.
Usually these A, Diagram of the nephridium of Nereis diversicolor.
In this category are included (by Goodrich and Lankester) the gonad ducts of the Oligochaeta, certain funnels without any aperture to the exterior that have been detected in Nereis, &c., funnels with wide and short ducts attached to nephridia in other Polychaeta, gonad ducts in the Capitellidae, the gonad ducts of the leeches.
Thus Nereis among the latter worms, from the resemblance which its excretory system bears to that of the Oligochaeta, may be made the starting-point of a series.
- Nereis pelagica.
Harvey, Phycologia Britannica (4 vols., London, 1846-1855); Nereis Boreali-Americana (3 pts., Washington, 1851-1858); Phycologia Australica (5 vols., London, 1858-1863); F.
Stackhouse, Nereis Britannica (ed.