12 



IK Tetmemoras Brebissoni, Rolfs Des. 145, Providence. 



L49. \m lattjs, Ralfs Des. 14G. Providence. 



1.50. Penium margaritaceum, Breb -Ralfs Des. (Closteium Eh.) 

 Providence. 



L51. Digitus, Breb.-Ralfs Des.151. (GlosteHum lamellosurn.) 



L52. Docidium nodulosum, Breb.-Ralfs Des. 155. Maine to Vir- 

 ginia, Bailey. 



153. Ba< plum, Breb.-Ralfs Des. 158. United States, 



Bailey 



['•'■ nodosum, Bailey Ealfs Des. 218. United States 



Bailey. 



L55 constrictum, Bailey-Ralfs Des. 218. Worden's 



Pond, Bailey. 



L56. verrucosus, />'"//< y-Ralfs. Des. 2ls. Rhodelsland. 



JBcw7e?/, 



L57. ykrticillatum, Bailey. -Ralfs Des. 218. Worden's 



Pond. Bailey. 



L58. Closterium Lunula, Ehrh.-Ralfs Des. 163. New England, 

 Bailey. 



L59. mo.xiliferum, 2F/o7*. Z?aZ/s Des, 163. New England, 



Bailey. 



L60. striolatum, Ehrh.-Ralfs Des. 173. New England, 



Bailey. 



L61. > [JSPIdatum, /»'»///<// RaZ/s /><*. 219. Worden's 



Pond, Bailey, 



L62. Pediastrum Tetras, Ra//s /><*. is-j. # New England, Bailey. 



L63. heptactis, Ra(fs. Des. L83. Providence. 



h;i. Boryanum, Menegh. Halt's Des. 187. Maine to 



Mexico. Bailey. 



L65. ellipticum, //</**. A'"//'.- /><>. L88. Maine to Vir- 



ginia, /'"'''' '/ 



L66. s< enedesmus quadricanda, #re&. //"//>• /><*. L90. Maine to 

 Virginia, Bailey. 



L67. obtusus, Meyen. RaZ/s Des 193. Maine to Vir- 



ginia, Bailey. 



Diamtoma :< a . 

 L6 Ei ."ii\ ii rRAODON, Eft. Pritch. rn/.7(33. Providence. 



L69. DIADEMA, B/l. Pritch. Inf.763. Providence. 



170 IIimwiidm \i i'i < riNALE, A'"/ \ Pritch. ZVif. 765. Providence. 



