730 Harozp HEATH, 
forms many characters are without a counterpart elsewhere. Never- 
theless as Wirin, PELSENEER, PLATE and others have maintained 
the relations of the nervous system, gonad, pericardium and coelo- 
moducts are sufficient to stamp the solenogastres as true mollusca 
and for the present at least to confine them within the class 
Amphineura. 
