16 COCCOPHYCES. 
Tetraspora bullosa. 4g. Sp. Alg. p. 414. 
Thallus membranaceous, saccate, obovate, sinuate, bullose, 
an inch toa palm long, dark green, more or less verrucose ; 
cells nearly spherical (after division hemispherical or angular), 
geminate, or quaternate, crowded, granular. 
Size. Cells before division ‘008-012 mm., after division 
°0058-:0075 mm. (Rabh.). 
Rabh. Alg. iii. 39. Rabh. Exs. No. 115, 1233. Kirch. 
Alg. Schl. p. 108. 
Monotrema bullosum, Thur. Mem. Cherb. 1854. 
Tetraspora minima, Desy. Flor. Ang. p. 17. 
Ulva bullosa, Roth. Cat. iii. 320. Hook. Brit. Fl. ii, 312. 
Harv. Man. p. 171. Hass. Alg. t. 78, f. 18. Dickie Bot. 
Guide, p. 306. Eng. Bot. ed. 2, t. 2405. 
Stagnant pools and ditches of fresh water. 
Plate VI. fig. 1. a, natural size; 6, fragment mag. 400 diam. 
Tetyaspora gelatinosa. (Vauch.) 
Thallus vesiculose, ovate-clavate, or obovate, gelatinous, with 
age unequally expanded, irregularly torn, pallid and sometimes 
dirty-green, often incrusted with lime; cells of variable size, 
globose, either single or geminate, and scattered or quaternate, 
or geminate, and somewhat crowded; contents green and 
granular. 
Sizz. Cells ‘003-014 mm. (Rabh.). 
Rabh. Alg. iii. 40. Hook. Br. Flor. ii. 313. Mackay Flor. 
Hiber. p. 244. Hass. Alg. p. 301. Kirch. Alg. Schl. p. 109. 
Ulva gelatinosa, Vauch. Hist. p. 244, t. 17, f. 2. 
Rivularia tubulosa, DC. Fi. Fr. ii. p. 5. 
In pools and ditches. 
Plate VI. fig. 2. a, natural size ; 6, fragment mag. 400 diam. 
Tetraspora lubrica. (Roth.) 
Thallus elongated, tubular, erect, an inch to a palm long, 1-4 
lines thick, splitting, undulate, sinuous, sticky, between gela- 
tinous and membranaceous, yellow-green; cells globose, or 
rather angular, of medium size, green ; tegument very thin. 
SizE. Cells 008-01 mm. (Rabh.). 
Rabh. Alg. iii. 41. Rabh. Exs. No. 51. Dickie Bot. Guide, 
p. 3806. Eng. Bot. ed. 2, t. 2407. Hass. Alg. p. 300, t. 78, f. 
10. Kirch. Alg. Schl. p. 109. 
Tetrasporella lubrica, Gaill. Desm. Ex. i. 655. 
Ulva lubrica, Roth. Cat, i. 204. 
Conferva lubrica, Roth. Cat. iii. 168. 
Plate VI. fig. 3. a, natural size ; 6, fragment mag. 400 diam. 
Tetraspora flava. Hass. Alg. t. 78, f. 11. 
Thallus yellow when dry, cellules small, quaternate. 
Rabh. Alg. iii. p. 42, 
In rocky rivulets. 
