156 



courtesies, the majority of the species enumerated having been 

 confirmed by him. 



Class I. — Rhodophycete. 



Family III. — Batrachospermaceae. 

 I. — BatrachosperniMm ino7iili forme, var. SUBULATUM, n. var. 

 A small form, dusky purple, whorls dense, barely distinguish- 

 able except by crushing; branches and branchlets terete, some- 

 what tapering, with a slightly wavy outline ; tufts one-half to 

 nearly one inch high. Mr. WoUe considers this a distinct variety. 

 Whether possibly only a condition of growth, remains for future 

 observation to determine. Plentiful on rocks and in pot holes on 

 the Penobscot river at Old Town. October. 



Class IL — Chlorophyce^. 



Family VI. — Q^dogoniaceae. 



Wittn, p. 102, PL XC— In an 



old well on the college farm. Oct. In fruit. A species 



of 



CEdog 



mium is associated with the above, but the specimens 

 were sterile at the time of examination and not determinable. 



Family VIII. — Confervacese, 



3. Draparnaldia glomerata, Ag., p. 108, PL XCIL — In con- 

 structing a dam across the Penobscot at Old Town quite a num- 

 ber of pot holes were exposed, and In these the above species 

 was found in, abundance, associated with the Batrachospermnni 

 mentioned above. Oct. 



4. Stigeoclonium suhsecwtdum, Kg., p. II2, PL XCIX. I>^ 

 an old well on the college farm, which has been filled to within a 

 few feet of the surface. Plentiful. Oct. Interesting as the only 

 locality given by WoUe is South CaroUna. 



Specimens of Ulothrix were also observed in a gathering 

 from the Penobscot, but were not in a condition for specific de- 

 termination. 



Family XII. — Volvocace^, 



5. Volvox glohator, L., p. 158, PL CLI. — Found sparingly in 

 several gatherings from pools and small ponds about Orono. 



6. Pandorina mortim, Bory., p. 161, PL CLIII. — In stagnant 

 pools- Much more common in gatherings made than Volvox^ 



