from the Gulf of St. Laiorence. 409 



clings to submerged wood and sea-weeds. I have seen in Nova 

 Scotia sunken logs completely covered with a brown fleece 

 of this creature, and specimens from Metis occur in Miss Carey's 

 collection. It is said like many others of these' little animals, to 

 be very phosphorescent when agitated in the dark, and its polyps 

 are exceedingly limpid and delicate when extended from the cells. 

 In Fig. 6 is represented a portion of a stem with one of the po- 

 lyps extended. 



3. S. latiuscula. — This is a species discovered by Stimp- 

 son at Grand Manan, in the Bay of Fundy. A fine specimen from 

 Metis in Miss Carey's collection corresponds so closely with Stimp- 

 son's description, that I cannot doubt it is the same species. 



4. Sertularia . — In Miss Carey's collection from Murray 



Bay, is a small Sertularia, having the general aspect and mode of 

 growth of S. pumila, but its color is gray or pearly, and its form 

 is more delicate, the stem being very slender, so that the pairs of 

 cells appear like a string of broad arrow heads. They are exactly 

 opposite, the upper part projecting at right angles from the stem, 

 the opening small and the lower part rapidly contracting. I have 

 not seen the animals or ovicapsules. This species is possibly the 

 same with that described by Desor in Proc. Bos. Socy. Nat. His., 

 Vol. 4, as S. plumea. 



5. Plumularia falcata. — In the genus Plumularia the cells 

 are placed only on one side of the branchlets, which often have a 

 fine feathered arrangement. A number of specimens in my own 

 and Miss Carey's collections from Sable Island, the coast of Nova 

 Scotia and Metis, all appear referrible to the species above named, 

 which would thus appear to be very abundant and widely diffused 

 on our coasts. It is also mentioned by Stimpson as occurring at 

 Grand Manan. 



In the collection of Miss Carey above referred to, there are seve- 

 veral species of Bryozoa, which I hope to notice in a future paper, 

 in connection with species which I have recently found fossil in 

 the tertiary clays and gravels, or living in the Gulf of St. Law- 

 rence. 



j. w. D, 



