21 



Family Hydractiniida. 

 Hydractinia echinata, Johnston. 

 Hydractinia polyclina, L. Agassiz (1860). 



New Jersey to Labrador (Verrill). Throughout the entire region, from 

 low-water mark to 60 fathoms, usually coating over the dead shells of 

 gasteropoda. 



Family Monocaididce. 

 MoNOCAULUS GLACiALis (M. Sars). 



Corymorpha glacialis, M. Sars (1849). 

 Corymorpha nutans, Stimpson (1853). 

 Corymorpha pendula, L. Agassiz (18tj2). 

 Monocaului glacialis, Allman (18G4). 



Grand Manan, "oflF West Quoddy Head, a hundred or more were taken 

 at a single haul of the dredge. It also occurs at Welsh Pool and near Low 

 Duck Island. It lives on a sandy bottom, in from 4 to 15 fathoms" 

 (Stimpson). Common in Casco Bay and the Bay of Fundy (Verrill). 

 Rodger's Island, Oak Bay, Charlotte County, N.B., at a very low tide 

 clinging to the woodwork of a weir (Ganong, 1889). Murray Bay, Sir J. 

 W. Dawson, (fide Verrill). 



Incertce Sedis. 

 AcAULis PRiMARius, Stimpson. 

 1853. 8j-nops. Marine Invert. Grand Manan, p. 10. 



Grand Manan, " dredged in the laminarian zone, from 5 to 15 fathoms, 

 attached to various Rhodosperms, as Ptilota, Chondrns and Rhodymenia" 

 (Stimpson). 



LEPTOMEDUSiE. 



(a.) Medusoid Scheme. 



Family Cannotidfje, 



Ptychogena lactea, a. Agassiz. 



Around Pendleton's Island, east side of Passamaquoddy Bay (Ganong). 



Family Eucopidie. 



TiAROPSIS DIADEMATA, L. AgHSSiz. 



Bay of Fundy (Verrill). 



