HYDROIDS FROM NOVA SCOTIA 161 



Hydractinid^e. 



Genus Hydractinia. 



Hydractinia echinata (Fleming). 



Alcyonium echinatum Fleming, British Animals, 1828, p. 517. 

 Hydractinia echinata Hincks, British Hydroid Zoophytes, 1868, 

 p. 23. 



Hydractinia polyclina Agassiz, Cont. Nat. Hist. U. S., Vol. IV, 

 1862, p. 227. 



Hydractinia polyclina Nutting, Hydroids of Woods Hole, 1901, 

 p. 335. 



Hydractinia echinata Whiteaves, Marine Invert. Eastern Can., 

 1901, p. 21. 



Common on Littorina shells inhabited by hermit crabs and 

 on small stones, at low water in the harbour, Canso. 



C0RYM0RPHTD.<E. 



Genus Corymorpha. 



CORYMORPHA PENDULA Agassiz. 



Corymorpha pendula Agassiz, Cont. Nat. Hist. U. S., Vol. IV, 

 1862, p. 227. 



Corymorpha pendula Nutting, Hydroids of Woods Hole, 1901, 

 p. 337. 



Monocaulis glacialis Whiteaves, Marine Invert. Eastern Can., 

 1901, p. 21. 



Two specimens dredged from muddy bottom at a depth of 

 50 fathoms, in the Atlantic at the entrance to Chedabucto bay, 

 Canso. 



