202 MESSRS. W. WEST AND G. S. WEST ON 
in Aun. Sci. Nat. 7° sér., Bot. v. 1887, p. 80; Wille, in Bih. K. Sv. Vet.-Akad. 
Handl. viii. 1884, no. 18, t. 1. figs. 1-19; West & G. S. West, in Journ. Bot. xxxiv. 
1896, p. 381, t. 361. figs. 1, 2. 
Hab. Paddyfield between Kosgoda and Urahaighasmahendai. Small pond, Pera. 
deniya. 
Family SCYTONEMACEJE.- 
Genus SCYTONEMA, Ag. 
322. ScyTONEMA AMBIGUUM, Kuetz. Spec. Algar. 1849, p. 894; Tab. Phyc. ii. 1850-52, 
p- 7, t. 26. fig. 2; Born. & Flah. in Ann. Sci. Nat. 7* série, Bot. v. 1887, p. 100. 
Hab. Paddyfields, Heneratgodha. 
323. SCYTONEMA MIRABILE, Thuret. Conferva mirabilis, Dillw. Scytonema figuratum, 
Agh. Syst. Algar. 1824, p. 38. 
Hab. With the preceding species. 
Genus TOLYPOTHRIX, Kuetz. 
324. TOLYPOTHRIX crassa, West & G. S. West, in Journ. Bot. xxxv. 1897, p. 267. 
Crass. fil. 20-25 u; crass. trich. 11-19 y. 
Hab. On bark, Royal Botanical Gardens, Peradeniya. Also on the sides of a well, 
Pandure. 
325. TOLYPOTHRIX PHYLLOPHILA, West & G. S. West, l. c. 
Crass. fil. 13:5-17 u; crass. Dich 85-10 y. 
Hab. On bark, Royal Botanical Gardens, Peradeniya. 
The sheaths of this form were lamellose and coloured brown, but the plants had 
been preserved in a mixture of glycerin and aleohol and in the same bottle were large 
pieces of bark and a quantity of a red species of Trentepohlia. It is highly probable 
that the sheaths of the Tolypothrix (which are normally colourless) had been dyed by 
colouring-matter extracted by the fluid from the other contents of the bottle. 
326. TOLYPOTHRIX LANATA, Kuetz. Sp. Alg. p. 314; Born. & Flah. /. c. p. 120. 
Hab. Pool in glen by roadside, near Bandarawella (altit. 4000—5000 ft.). 
Family NOSTOCE E 
Genus Nosroc, Vaucher. 
4 
397. Nostoc Microscopicum, Carm.; Born. & Flah. 7. c. p. 210. Nostoc rupestre, Kuetz. 
Hab. Wet rocks, Kadaganuwa. 
