130 MESSRS. W. WEST AND G. S. WEST ON 
Var. TENERRIMA, Kirchn. Ulothrix tenerrima, Kuetz. Phyc. Germ. p. 197. 
Crass. fil. 10°5 m. 
Hab. Among Spirogyra sp. in fast-running stream, Peradeniya. 
Genus HERPOSTEIRON, Nag. 
25. HERPOSTEIRON CRASSISETUM, sp. n. (Pl. 17. fig. 11.) Fila brevia, interdum ramosa, 
filis et ramis appressis; cellulae depresse suboblong vel irregulariter elliptice, 
supra dorsum cellule uniuscujusque setis erectis 1-2; sets» valide filiformes, 
longitudinum variorum, angustee basin versus sed crassiores sursum, tum gradatim 
attenuate: ad apices acutos; seta unaquaque serie cellularum 4-8 formata, cellulis 
diametro 8-15-plo longioribus. 
Diam. cell. 12:5-17 u, altit. 6:5—7:5 4; crass. set. 2:3-5 m. 
Hab. Paddyfields, Heneratgodha. 
This species is characterized by the stout filamentous setze, which very much resemble 
the branches of a Chetophora or a Stigeoclonium. The setze are also narrower at their 
point of attachment to the cells than for some distance away from the base, and there 
are frequently two of them attached to one cell. 
Genus NoRDSTEDTIA, Borzi. 
24. NORDSTEDTIA GLOBOSA, Borzi, in Nuova Notarisia, iii. Apr. 1892, p. 50. Herpostetron 
globosum, Nordst. Alg. aq. dulc. et Charac. Sandvic. 1878, p. 23, t. 2. figs. 22-28. 
Aphanochete globosa, Wolle, Freshw. Alg. U.S. p. 119, t. 105. figs. 5, 6. 
Diam. cell. 10°5-12°5 n. 
Hab. Paddyfields, Heneratgodha. 
Family CONFERVACE E. 
Subfamily CON FER V EX. 
Genus Microspora, Thur. ; emend. Lagerh. 
25. MICROSPORA FLOCCOSA, Thur. Rech. Zoosp. Algues, p. 12; Rabenh. Flor. Europ. 
Algar. iii. p. 321. Conferva floccosa, Agh. 
Crass. fil. 13 p. 
Hab. Paddyfields, Heneratgodha. 
Subfamily OPHIOCYTIE Æ. 
Genus OPHIOCYTIUM, Naeg. 
26. OPHIOCYTIUM CAPITATUM, Wolle, Freshw. Alg. U.S. p. 176, t. 158. figs. 3-7. 
Var. LONGISPINUM, Lemmermann, in Hedwigia, xxxviii 1899, p. 32. 0. cochleare, 
