252 THE CANADIAN NATURALIST. [Vol. X. 



when contracted it forms an elongated ov;il. The anterior ex- 

 tremity is blunt and fringed with cilia; a narrow elongated gullet 

 can be seen but the body cavity appears protoplasmic and con- 

 tains chlorophyl grains and nuclei. The naked eye appearances 

 of this remind one of the Nosfoc or of the gelatinous masses of 

 the Pnlmellacem. It occurs extensively throughout Canada. I 

 have found it in Burlington Bay, the Humber ponds near Toronto, 

 the marshes about Lakes Simcoe, Couchiching and Muskoka. 

 Nowhere have I met with it in such profusion as in Lac a I'eau 

 Claire. In Lake Roberta, near Grenville, I found some very 

 lar2:e masses. 



lit. — On the distribution of Pectinutelbi iwtgnifiai in Canada, 



I stated in the brief notes in Canadian fresh-water Polyzoa 

 which I read at one of the meetings of the Society last year, that 

 the large Polyzoon above named had not been met with in Lower 

 Canada. Since then I have found it in beautiful masses in 

 Fitch Bay, Lake Memphremagog, and Dr. Harrington has ob- 

 tained several fine specimens in the North river, near St. An- 

 drews. In Ontario it has been found in Rice Lake in the Hum- 

 ber ponds and in greatest prolusion in the Desjardius canal and 

 the contiguous marshes. It is probably widely distributed in 

 quiet ponds and swamps throughout the country, never in the 

 open lake or in very clear water. 



(^To be cojitmiced.) 



"On the results ov Recent Explorations op Erect 

 Trees containing Reptilian Remains in the Coal 

 Formation of Nova Scotia." By J. W. Dawson, 

 C.M.G., LL.D., F.R.S., &C. Abstract of a Memoir read 

 before the Royal Society^ January 12th, 1882. 



The explorations referred to were carried on chiefly in the 

 beds at Coal Mine Point, South Joggins, Nova Scotia ; and their 

 object was to make an exhaustive examination of the contents of 

 erect trees found at that place and containing remains of Batra- 

 chians and other land animals. 



A detailed section is given of the beds containing the erect 



