the algae of bermuda. 31 



Family PROTOCOCCACEAE. 

 Protococcus Agardh. 



*P. viRiDis Agardh, 1824, p. 13; Pleurococcus vulgaris Nageli, 1849, 

 p. 65, PL IV. E, fig. 2; Collins, 1909, p. 304, fig. 106. On shady side 

 of trees, walls etc., all over the island; it occurs in similar stations in 

 all temperate regions, and possibly also in tropical. Wille, 1913, p. 3, 

 PI. I, fig. 1, has pointed out the confusion that has long existed in 

 regard to this species and Pleurococcus vulgaris Meneghini, and by 

 examination of type specimens, cleared up the matter. 



Chloroctstis Reinhard. 



C. CoHNii (Wright) Reinhard, 1885, p. 4, PI. I; Moore, 1900, p. 100, 

 PI. X; Collins, 1909, p. 148, fig. 35; Chlorochytrium Cohnii Wright, 

 1877, p. 367, PI. IV-V. In Ulva Lactuca, Hungry Bay, April, CoUins. 

 Spores, apparently the smaller kind, had been formed in some of the 

 cells. 



Family SCENEDESMACEAE. 

 OoCYSTis Nageli. 



*0. BoRGEi Snow, 1903, p. 379, PI. II, fig. VII; Collins, 1909, p. 160. 

 Among Oedogonium Itzigsohnii, in ditch in Devonshire Marsh. 



ScENEDESMUS Meyen. 



*S. BiJUGA (Turp.) Wittrock, Nordstedt & Lagerheim, Alg. Exsicc, 

 No. 1567; Collins, 1909, p. 168; Achnanthes bijuga Turpin, 1828, p. 

 310, PI. XIII, fig. 4. Among Rhizoclonium Meroglyphicum in an 

 artificial reservoir near Spanish Rock, Dec, Hervey. 



Family ULOTHRICHACEAE. 

 Geminella Turpin. 



G. scALARiFORMis forma marina G. S. West in litt.; P. B.-A., No. 

 2002. Forming a floating gelatinous mass in an upper tide pool. 



