THE FRESHWATER ALGJE OF CEYLON. 195 
Hob. Paddyfields, Heneratgodha. Paddyfield between Kosgoda and Urahaighasma- 
hendai. 
Var. HIANS, Wolle, 1885; Freshw. Alg. U.S. 1887, p. 21, t. 54. figs. 14-16. H. indica, 
B. W. Turn. in K. Sv. Vet.-Akad. Handl. xxv. 1893, no. 9, t. 19. fig. 18. 
Hab. Paddyfields, Heneratgodha. 
284. HYALOTHECA INDICA, W. B. Turn. in K. Sv. Vet.-Akad. Handl. xxv. 1893, no. 5, 
p. 152, t. 22. fig. 17. 
Long. 11-12:3 4 ; lat. 9-9°5 u. 
Hab. Paddyfields, Heneratgodha. 
The plants figured by Turner under the name of H. indica include two distinct 
species; that on t. 22. fig. 17 is truly a distinct species (Z7. indica), but that on t. 19. 
fig. 18 is merely a form of H. dissiliens, var. hians, Wolle. 
285. HYALOTHECA MUCOSA, Ehrenb.in Bericht. Berlin, 1840, p. 212; Ralfs, Brit. Desm. 
1848, p. 53, t. 1. fig. 2. Conferva mucosa, Dillw., 1809. 
Var. MINOR, Roy & Biss. (PI. 22. fig. 26.) 
Long. 12°5-14°5 u; lat. 95-1075 p. 
Hab. With the preceding species. 
286. HYALOTHECA UNDULATA, Nordst. in Hedwigia, xviii. 1879, p. 74. H. undulata, 
var. producta, W. B. Turn. in K. Sv. Vet.-Akad. Handl. xxv. 1893, no. 5, p. 152, 
t. 18. fig. 15. 
Forma major, cellulis paullo elongatis. Long. 20-24,; lat. 85. (PI. 22. fig. 27.) 
Hab. With the preceding species. 
The specimens observed from Ceylon were larger than any European or American 
examples we have examined. The cells were also proportionately longer. H. undulata, 
var. producta, W. B. Turn., is identical with the typical form. 
287. HYALOTHECA NEGLECTA, Racib. in Flora, lxxxi. Erg. 1895, p. 30, t. 3. figs. 2, 3; 
West & G. S. West, in Ann. Bot. xii. 1898, t. 4. figs. 22-33. 
Hab. Paddyfields, Heneratgodha. Paddyfield between Kosgoda and Urahaighasma- 
hendai. 
Order PROTOCOCCOIDE 5 
Family PALMELLACELE. 
Subfamily C Œ N O BI E Æ. 
Genus CŒLASTRUM, Naeg. 
288. C&rAsTRUM CUBICUM, Naeg. Gatt. einzell. Alg. p. 97, t. v. 
Hab. In artificial tank, Peradeniya. 
SECOND SERIES.—BOTANY, VOL. VI. 2E 
