i UN8 wi> in BVET. 



at the entrance to Hungry Hay. April, Collins. The typical form of 

 this species la a fresh water plant from Barbados, described and 

 figured as Hormospora tcalariformu by G. S. West, L904a, p. 282, PL 

 < l I I I.XIV. figs. 6 7. In the Bermuda plant the cella arc some- 

 times longer in proportion to the diameter, and the wall of the fila- 

 ment shows do differentiated portion about the individual cell. [1 is 

 probable that Hormotrichttm bermudianum Harvey la the same plant, 

 but the specimens of the latter cannot be found. Rein, 1873, p. 153, 

 gives this name as Harvey, sp. n. Dr. Mobiua has kindly looked for 

 it in the collection at Frankfort, and was unable to find it. Professor 

 1 >ixon of the University of Dublin tells US that he cannot find it in the 

 Harvey herbarium. The nomen nudum cannot of course stand against 

 Wi it's name, hut it would he of interest to recover the material. 



Stichococcus NagelL 



*S. SUBTIUB (Kutz.) Klercker, 1S96, p. 103; Ilazen, 1902, p. 1G2, 

 PL XXI, figs. 10-13; Collins, 1909, p. 191; Ulothrix subtilis Kiitzing, 

 18 15, p. 197. Among other algae, in a ditch in South Shore marshes, 

 Aug., Collins. Straight filaments a few cells long, scattered among 

 Spirogyra, Rhizoclonium etc. 



Microspora Thuret. 



1. Cells thick-walled, 20 n or more diam. 1. M. \\ "ittrockii. 



1. Cells thin-walled, 11-14 ax diam. 2. M. Willeana. 



*1. M. WrrTROCKn (Wille) Lagerheim, 1887, p. 417; Hazen, 



1902, p. 172. PI. XXIII, figs. 5-7; Collins, 1909, p. 193; P. B.-A., 

 No. 2066; Conferva WiUrocJdi Wille, 1887, p. 461, PI. XVII, figs. 35- 



41. Fresh water pool near Shark's Hole, Feb., Hervey. 



•2. M. Willeana Lagerheim in De Toni, L889, p. 228; Hazen, 



1902, ]>. 17o, PI. XXIV, figs. 5-7; Collins, 1909, p. 194. Among 

 Oedogonium etc. in ditch in Devonshire Marsh, April, Collins. 



Family ULVACEAE. 

 Enteromorpha Link. 



1. Cells not in longitudinal scries except in the very youngest part-. 2. 



1. Cells mostly in longitudinal series. 3. 



2. Cells 10-20 p diam, 6. E. intestinalis. 



