1905] Collins, Phycological Notes of Isaac Holden 225 
E. percursa (Ag.) J. Ag. 1260. Cook's Point, among other algae. 
May. 
E. prolifera J. Ag. 823, 829, 1254 = P. B.-A. 470, 1258, 1264. 
Yellow Mill Pond, “Some specimens 6 or y feet long”; Seaside 
Park, on stones and shells; Fresh Pond, attached to firm sandy bottom 
and Spartina turf between tide marks; Cook's Point. May. 
Lea fulvescens (Ag.) J. Ag. 33.379, 687, 767, 755,777, 1196. On 
rocks between tides, Seaside Park; on timber at shipyard, Cook's 
Point; Fresh Pond; Long Beach. May, June, Oct.- Dec. 
Protoderma marinum Reinke. 1483a. Seaside Park. Jan. 
Ulothrix flacca (Dillw.) Thuret. 558,912,915, 1077, 1079. With 
U. implexa, on rocks not far from high water, Woodmont; on Fucus, 
Seaside Park. Mar., Apr. 
U. implexa Kütz. 558, 792, 793, 799, 810 =P. B.-A., 115a, 815, 
1172. Woodmont, with U. flacca; on stones and Spartina, Yellow 
Mill Pond; in brackish pond, Seaside Park. Dec., Apr., May. 
Stichococcus marinus (Wille) Hazen. (Ulothrix variabilis var. 
marina Wille.) 1093. Ash Creek, near Black Rock, on bank over- 
flowed at high water. Apr. 
Epicladia Flustrae Reinke. 610, 691, 864. On polyzoon on back 
and legs of spider crab. June, Aug. 
Hormiscia penicilliformis (Roth) Fries. (Urospora pentcilliformis 
Aresch.) 232, 240, 256, 280, 309, 543, 555. On rocks and wood- 
work, near high water mark, Seaside Park; Cook's Point. Jan.—Apr., 
Dec. 
Chaetomorpha aerea (Dillw.) Kütz. 27. On pebbles, Long Beach. 
June. 
C. Linum (Fl. Dan.) Kütz. 688 — P. B.-A. 22, 1432. Long 
Beach, near Stratford Point; Salt marsh pool, Cook's Point. Aug., 
Oct. 
Rhizoclonium riparium (Roth) Harv. 151. On rocks between tides, 
Stratford Shoals. Sept. 
KR. tortuosum Kitz. 1235, 1236. Forming a fleece on Sphacelaria 
radicans, etc., Seaside Park. Dec. 
KR. tortuosum forma polyrhizum Holden. 1266 — P. B.-A. 625. 
On firm bottom and on other algae, Cook’s Point. June. 
Cladophora albida (Huds.) Kütz. 34,609. On stones near low 
water mark, Seaside Park. June. 
C. albida var. refracta Thuret. 943, 1129, 1546. Cook’s Point; 
Stratford Shoal; The Gut. May-July. 
