134 JOURNAL AND PROCEEDINGS 



NOTES ON CCELENTERATA (ZOOPHYTES) AND RECENT 

 CLASSIFICATION. 



Read before the Geological Section, June 2'jth, i8go. 



BY COL. C. C. GRANT. 



Passing over still lower forms of life among the invertebrates, 

 rhizopods, foraminifera and sponges, we come to a group called 

 zoophytes, defined by Dr. Geikie as radically symmetrical animals 

 with a body composed of cells, arranged in an outer and inner layer, 

 including a body cavity, sub-divided into : — 



Hydrozoa — including the fresh water hydra, the marine jelly 

 fishes, millepores, campanularia, sertularia and the extinct graptolites. 



Ctenophora — spherical or cylindrical medusae, including Venus' 

 girdle, and beioe — North Seas. 



Actinozoa — polyps and actiniae (sea anemones). 



Rugosa — the older corals in which the calcareous partitions are 

 arranged in multiples of 4 with transverse partitions. Zaphrentis, 

 amplexus, cyathophyllum are examples. 



Alcyonaria — including alcyonia, pennatula, gorgonia; animals 

 with light plumed tentacles, calcareous bodies and horny skeletons. 



Zoantharia (modern forms) tentacles, 6 or multiples of 6 — star 

 corals. Mushroom (fungidae) madrepores. 



Hydrozoa. — Although I am informed the fresh water hydra is 

 found in Canada, I have never seen it in any stream or brook here. 

 Indeed, I doubt if I ever saw it since I was a small boy. I was 

 standing in a tributary to the Blackwater, in the County of Cork, 

 Ireland, engaged in turning over the stones in the brook, hunting for 

 loaches with a three-pronged fork I had surreptitiously secured 

 from the kitchen, when I distinctly saw through the clear water what 

 looked to be a plant stalk moving close to my feet like a looping 

 caterpillar. The whole proceeding appeared so uncanny that I 

 made such haste for dry land that I stumbled and plunged head- 

 foremost into the brook, leaving my angUng belongings behind me. 

 Reflecting that the loss of the fork may lead to disagreeable enqui- 

 ries, I was induced to make an attempt for its recovery as well as to 



