1905] Collins, Phycological Notes of Isaac Holden 239 
Mougeotia robusta (DeBary) Wittr. 601, 606. Pequonnock River, 
below Factory Pond dam. June. 
M. genuflexa (Dillw.) Ag. 668 =P. B.-A. 312, 952. Peck’s 
Mill, Putney. July, Aug. 
Tetraspora bullosa (Roth) Ag. 194, 222. Side stream of Pequon- 
nock River, below Factory Pond dam, on stones, sticks, etc. Nov., 
meet 
T. bullosa forma cylindrica (Hilse) Rab. 520, 521, 525. On 
plants and stones in Parrott’s Pond. Nov. 
T. lubrica var. lacunosa (Duby) Chauv. 195, 199, 208. Side 
stream of Pequonnock River, below Factory Pond dam; Stillman’s 
Brook. March, Nov. 199, “Narrow, string-like fronds up to the 
length of 2 feet or more.” 
Gloeocystis rupestris (Lyng.) Rab. 746. With Calothrix fusca, 
etc., on stone work of Factory Pond dam. Oct. 
Conferva bombycina forma minor Wille. 572, 717 = P. B.-A. 621, 
827. Stream running into Bruce's brook, near horsecar stable ; 
stream below paper mill, No. Bridgeport, with Microspora stagnorum. 
Apr., May, Sept. 
Microspora abbreviata (Rab. Lagerh. 925.  Bruce's Brook. 
Apr. 
M. amoena (Kütz. Rab. 531, 928a — P. B.-A. 616.  Bruce's 
Brook; stream below paper mill; Dec., Apr. 
M. crassior (Hansg.) Hazen. 928a. Stream below paper mill, 
with M. amoena. Apr. | 
M. stagnorum (Kütz.) Lagerh. 602, 604 = P. B.-A. 618, 717. 
“ Streamlet leaking through bank below the dam, Pequonnock River; 
some of it 2 ft. or more long; with Conferva bombycina.” 
Stichococcus flaccidus (Kütz.) Gay. 431. On bark of Horse Chest- 
nut tree, Pembroke St., Bridgeport. Aug. 
Ulothrix zonata (Web. & Mohr) Kiitz. 945 =P. B.-A. 19a. 
On stones, Mill River, near Samp Mortar Rock. June. 
Stigeoclonium tenue ? 603. Stream from paper mill, Factory Pond. 
June. 
S. lubricum (Dillw.) Kütz. 811 =P. B.-A. 660. Little pond 
east of Yellow Mill Pond, near Stratford Cove. May. 
S. fasciculare Kütz. 828 = P. B.-A. 67. Bruce's Brook. May. 
S. Aagelliferum Kütz. 1170, 1171 =P. B.-A. 408. On stones 
in swift water, Pequonnock River, in the new channel, below Factory 
Pond dam. Dec. 
