11 



120. Micrasterias rotata, Ralfs Des. 71. Providence. 



121. radiosa, Ag.— Ralfs Des. 72. Maine to Vir- 



ginia, Bailey. 



123. furcata, Balfs Des. 73. Worden's Pond, Khode 



Island, Bailey. 



124. Crux-Melitensis, Half's Des. 73. Maine to 



Virginia, Bailey. 



125. truncata, Breb.-Ralfs Des. 75. United States, 



Bailey. 



126. foliacea, Bailey-Rolfs Desm. 210. Worden's 



Pond, Rhode Island, Bailey. 



127. Bailey i , Ralfs Desm.211. Rhode Island, Bailey. 



128. Euastrum oblongtjm, Ralfs Des. 80. Rhode Island, Bailey. 



129. CRASSUM-Xute. i?aZ/s J>es. 81. Rhode Island, Bailey. 

 L30. ansatum, _E/i?7i. i?a//s Xtes. 85. i?. MnaZe Kntz. 



Providence. 



131. elegans, Kutz- Ralfs Des. 89. Providence. 



132. binale, Ralfs Desm. 91. Providence. 



133. Cosmarium cucumis, Corda -Ralfs . Desm. 93. United States, 



Bailey. 



134. bioculatum, itaZ/'s Des. 95. Providence. 



135. Meneghinii, Breb. Ralfs Des 96. United States, 



.BaiZe?/. 



136. crenatum, #a//'s Des. 96. Providence. 



137. AMOENUM, Breb.-Ralfs. Des. 102. Providence. 



138. ornatum, Ralfs Des. 104. Providence. 



139. connatum, Breb.-Ralfs Des. 108. Providence. 



140. C ucurbit A, Ralfs Des. 109. Providence. 



141. granditubercueatum, Olney n. s.\ "near C. cu- 



cumis, but with large tubercles on the frond." 

 Providence. 



142. Staurastrum orbiculare, Ralfs. Des. 125. Providence. 



143. HiRsuTUM, Ralfs Des. 127. Providence. 



144. Hystrix, Ralfs Des. 128. Providence. 



145. GRACIEE, Ralfs Des. 136. Providence. 



146. tetracerum, Ralfs Des. 137. United States, 



Bailey. 



147. cyrtocertjm, Breb -Raffs Des. L39. Providence. 



