183 



7S- R. fltntans. Kg. p. 145, PL CXXL— In swift water at 

 the outlet of a mill-flume. ' Attached to the rocks and sometimes 

 the filaments were over a foot long. Orono. Aug. 



Y 



Family X. — Vaucheriaceae. 



76. Vaucheria DUlwynii, Ag. p. 150, PI. CXXVL— This 

 form was found in pools on the bank of the Penobscot, but being 

 sterile could not be positively determined. Orono. Aug. 



17- V. sessilis (Vauch.), DC, p. 151, PI. CXXVII.— Pu- 

 shaw Stream. Aug. Well in fruit. In still water. 



Family XIII. — Protococcaceae. 



78. Pediastnim Boryanum (Turpin), Menegh. Desmids U. 

 S- p. 153- PI. LIII. Bond Brook, Augusta. Dr. Young. Cce- 

 nobiums in our specimens 16 to 32-celled. 



79- P. pert7isiim,Kg. p. 154, PI. LIII. — The type form from 

 Augusta (Dr. Young) July. Also another form with lobes a little 

 shorter than Wolle's Fig. 34. A careful count of the cells of one 

 specimen gave 15, or the plan of five instead of four. Pool back 

 of college woods. Au 



g- 



80. P. pertiisjim, var. braclylobum, A. Br. p. 154, PI. LIII. 

 Associated with the above in pool back of college woods, Orono. 



Aug 



81. P. Ehreiibergii (Corda), A. Br. p. 154, PI. LIII.— Pool 



back of college woods. Aug. Diameter of our specimens lo/f 

 4 celled. 



82. Scenedcsmus candattis, var. typicns, Kirch, p. 172, PI. 

 ^^^I- — Bond Brook near Augusta (Dr. Young) Aug. 



83- 5. candattis, var. abiindans, Kirch, p. 172, PI. CLVI. — 

 Associated with the above. 



84- 5. dimorphiis, Kg. p. 173. PI. CLVI. — Associated with 

 above. 



85. Polycdrum enorme (Ralfs), Rab. p. 184, PI. CLIX.— 

 Small forms 12 to 25 //. Associated with Staun 

 Guagus Stream. July. 



Family XIV. — Palmellacese. 



8G. Dictyosphceriuni EJwenbcrgiaiuim, Naeg. p. 1S6, PI. 

 ^L^i- — Several families observed had single cells at the ends of 



sp 



