Cushman : New England species of Closterium 121 



22. Closterium moniliferum (Bory) Efirenb. 

 tulina monilifera Bory, Encycl. Meth. Hist. Zooph. 2 : 501. 



pl. 3. f. 22, 23, 27. 1824. 



sterium moniliferum Ehrenb. Infus. 91. pi. 3. f. 16 (in part). 

 Wolle, Desm. U. S. 45. //. 7. /. 13. 1884.— W. & G. 

 West, Brit. Desm. 1 : 142. pi. 16. f. 13, 16. 1904. 



17. //. 2. f. 8. 1889. 



J 



Cells larger than in the preceding, stout, moderately curved, 

 about 6 times as long as wide, apices obtusely rounded ; cell- wall 

 colorless and smooth. 



Length 200-325 // ; breadth 31-56//. (Plate 4, figure 10.) 



Maine: Orono (Harvey); Gorham (W. West); Bridgeton ! 

 Spencer Pond, East Middlesex ! 



New Hampshire : Intervale ! 



Massachusetts : Reading ! Wakefield ! Pondville ! Halifax ! 

 Lake Watuppa, Fall River ! Gay Head, Marthas Vineyard ! 

 Nantucket ! 



Rhode Island : Wainskut Pond, North Providence (Bailey). 



23. Closterium Ehrenbergii Menegh. 

 Closterium Ehrenbergii Menegh. Linnaea 14: 232. 1840. — Wolle, 



Desm. U. S. 45. //. 7. /. 16. 1884.— W. & G. S. West, 



Brit. Desm. 1 : 143. pi. 17. f. 1-4. 1904. 

 C robustum Hastings, Am. Month. Micr. Jour. 13 : 1 54- P l - J - 



/• 4- 1892. 



Cells large, stout, moderately curved, about 4 times as long as 

 wJ de, apices obtusely rounded ; cell-wall colorless and smooth. 



Main 



400-480 n ; breadth 78-125//. (P 



Works and Orono 



{Harvey) ; Mud Pond, Township 6, Range 12 ! 



New Hampshire : Page Brook, Rochester (Hastings). 



W 



Massachusetts: Amherst (W. West); Lake Q 



Wat 



Vib 



24. Closterium acerosum (Schrank) Ehrenb. 



no acerosus- Schrank, Fauna Boica 3 2 : 47- "»• 2S 4 8 ' l8 ° 3 ' 

 C/ osterium acerosum Ehrenb. Symb. Phys. Phytozoa, pl. 2. /. p. 

 l8 28 ; Infus. 93. pl. 2. f. 13. pl. 6. /. r. pl. 22. 1. 5. 1838. 



