414 Canadian Record of Science 



rather broad chromatophores, with many large 

 pyrenoids, making y 2 -l turn in the cell. No 

 fruiting material. 

 Mount Royal. 



Family 3. Mesocarpaceas. 

 *Mougeotia nummuloides, Hass. 

 No fruiting material, vegetative cells 16 micr. 



diam. 102 micr. long. 

 Verdun, Mount Royal, Back River, Amherst 



Park, etc. 



*Several forms of Zygnema and Mougeotia and 

 a great many of Spirogyra were collected, but as 

 no fruiting material was obtained, save in the case 

 of one Zygnema, it was found impossible to decide 

 with certainty to which species they belonged. 

 Only a few forms are, therefore, named, the 

 structure of which appeared to be sufficiently 

 characteristic to admit of listing them as accur- 

 ately determined species. 



Order II. Volvoeales. 



Family 1. ChlamydomonadaceaB. 

 Chlamydomonas sp ? 

 Verdun. 



Family 2. Volvocaceae. 

 Pandorina morum, Mull. 

 Colony globose to ellipsoid, up to 220 micr. broad, 



16 cells, rarely more or less, cells 9-15 micr. 



diam. 

 Amherst Park, Verdun, etc. 



Eudorina elegans, Ehrenberg. 



Colonies 50-200 micr. diam. usually 32 arranged in 



3 parallel circles of 8 each with four at each 



pole, cells 12-24 micr. diam. 

 Amherst Park. 



