1869.] 



CANADIAN ZOOLOGY. 



Fig. 36. 



417 



EozooN Canadense — Dawson. — Laurentian system, Canada. Section of a 

 small specimen natural size. 



The Polycystina are almost equally widely diffused in the sea, 

 though less abundant than the Foraminifera, and their silicious 

 skeletons are often of great beauty and symmetry. Fig. 37 

 represents two species obtained from a depth of 313 fathoms in 

 the Gulf of St. Lawrence, by Capt. Orlebar, R. N. 



Ceratospyeis and Dicttocha aculeata ? Gulf St. Lawrence, 

 313 Fathoms. 



SEA ANEMONES AND THEIR ALLIES. 



The Actinias or Sea-anemones may be taken as the type of the 

 Zoantharia; and as an example of these the species named by 



