THE FRESHWATER ALG OF CEYLON. 163 
152. CosMARIUM MACULATUM, W. B. Turn. in K. Sv. Vet.-Akad. Handl xxv. no. b, 
1893, p. 49, t. 7. fig. 31, t. 8. fig. 68 (forma). C. tumescens, W. B. Turn. Le 
p. 49, t. 7. fig. 32. C. maculatiforme, Schmidle, ‘Alg. Sumatra, in Hedwigia, 
xxxiv. 1895, p. 301, t. 4. figs. 3, 4. C. javanicum, Nordst., var. latum, Lütkem. in 
Ann. k. k. naturhist. Hofmus. Wien, xv. Heft 2, p. 118. C. chromatophoris 
parietalibus elongatis 6 in semicellula unaquaque, pyrenoidibus in serie singula in 
chromatophora unaquaque. : 
Long. 127 4 ; lat. 70 u; lat. isthm. 49 u; crass. 55 y. 
Hab. Pool in glen by roadside, near Bandarawella (altit. 4000—5000 ft.). 
After having examined a number of specimens of the plant from Ceylon we fail to see 
any distinction whatever between C. maculatum, W. B. Turn., and C. twmescens, W. B. 
Turn., from Northern India, and C. maculatiforme, Schmidle, from Sumatra. The semicells 
varied a certain amount in outline, and included forms with a somewhat narrowed apex, 
such as those figured by Schmidle. Our specimens had a sinus exactly like the one figured 
by Schmidle for C. maculatiforme, but the majority of specimens had slightly broader 
apices, such as those figured by Turner for his C. maculatum and C. tumescens; but, 
although the apices were as broad as those of Turner’s C. maculatum and C. tumescens, 
they were truncate as in Schmidle’s C. maculatiforme. The vertical view is broadly 
elliptical, and the chlorophyll is also arranged in six parietal bands, exactly as described 
by Schmidle for C. maculatiforme. O. tumescens, W. B. Turn., is merely a form of 
C. maculatum, with a slightly thicker cell-wall. 
153. CoswARIUM PYRAMIDATUM, Bréb. in Ralfs, Brit. Desm. 1848, p. 94, t. 15. 
figs. 4 a, 5, c. 
Hab. Paddyfields, Heneratgodha. In artificial tank, Peradeniya. 
154. CosMARIUM PSEUDOPYRAMIDATUM, Lund. in Acta R. Soc. Scient. Upsala, ser. 3, 
viii. 1871, p. 41, t. 2. fig. 18. 
Hab. Paddyfields, Heneratgodha. Paddyfield between Kosgoda and Urahaighas- 
mahendai. 
155. CosMARIUM VARIOLATUM, Lund. l.c. p. 41, t. 2. fig. 19. 
Long. 30:5 u; lat. 18 u; lat. isthm. Gu 
Hab. Stream, Victoria Park, Colombo. 
156. COSMARIUM ZONATUM, Lund. Z. c. p. 50, t. 3. fig. 18. 
Long. 51 »; lat. 26 4; lat. isthm. 11 u; crass. 20 u. 
Hab. Paddyfields, Heneratgodha. ^ Paddyfield between Kosgoda and Urahaighas- 
mahendai. : 
The specimens were very similar to the Swedish ones, but were proportionately a 
little broader, with the lower two-thirds of the semicells more inflated; the zones of 
punctulations were very similar, but the one across the broadest part of the semicells 
was a single series. 
SECOND SERIES.—BOTANY, VOL. VI. 2A 
