1905) Collins, Phycological Notes of Isaac Holden 235 
C. tenuissimum var. arachnoideum (J. Ag.) Farlow. 154, 677, 
1137. Always on Zostera; Milford Point; Woodmont; Long Beach. 
Aug., Sept. 
Spyridia filamentosa (Wulf.) Harv. 762, 1422. Woodmont. 
Aug., Sept. 
Gloiosiphonia capillaris (Huds.) Carm. 25. Floating, Long 
Beach. June. 
Melobesia Lejolisti Rosanoff. 1147. On Zostera, Pleasure Beach. 
Sept. 
Lithothamnion laevigatum Foslie. 615. On schistose rock, near 
low water mark, Woodmont. June. 
Corallina officinalis L. 477. Woodmont. Oct. 
Hildenbrantia Prototypus Nardo. 179. Seaside Park. Nov. 
ConNECTICUT FRESH WATER ALGAE. 
Chroococcus cohaerens (Bréb.) Nag. 776. Among other algae, on 
abutment of Factory Pond dam. Dec. 
Coelosphaerium Kiitzingianum Nag. 1052. With other algae, on 
moist rocks, Sage's Ravine, below first falls, Twin Lakes, Salisbury. 
Oct. 
Haematococcus pluvialis (Grev.) Flotow. 621, 629, 705. On drip- 
ping stonework, Factory Pond dam. July, Sept. 
Gloeocapsa violacea (Corda) Rab. 1435 — P. B.-A. 551. Gay- 
lordsville. Oct. “On vertical face of moist limestone, east side of 
road and a few rods from it, a mile or so from the station on the 
road to Bull's Bridge." 
Arthrospira Gomontiana Setchell. 43, 345, 1126 — P. B.-A. 155, 
1130. Pool below Factory Pond. June, July. 
Oscillatoria amphibia Ag. 954. With O. tenuis, on muddy bottom 
of Bruce's Brook. July. 
O. limosa Ag. 31, 50, 597, 747, 932 =P. B.-A.253b. Stream 
in Stratford; Great Falls of the Housatonic; ditch below Factory 
Pond, floating and attached to plants; Berkshire Mill Pond. “1481, 
forming a dark purple stratum on plants in running water, Pequon- 
nock River, below Factory Pond dam. Dec.” 
O. princeps Vauch. 161, 658 =P. B.-A. 2b, 850, 1413. West 
Branch of Bruce’s Brook; Parrott's Pond; Fresh Pond, in company 
with Zyngbya aestuarii. July, Sept., Oct. 
