170 MESSRS. W. WEST AND G. S. WEST ON 
Long. 86 4 ; lat. 64 4; lat. isthm. 23 y. 
Hab. Paddyfields, Heneratgodha. ^ Paddyfield between Kosgoda and Urahaighas 
mahendai. 
191. COSMARIUM QUADRUM, Lund. in Act. R. Soc. Scient. Upsala, ser. 3, viii. 1871, 
p. 25, t. 2. fig. 11. 
Forma minor, ad var. minus, Nordst., accedens. Long. 60 4; lat. 54 4; lat. isthm. 
18 u; crass. 27 n. 
Hab. In artificial tank, Peradeniya. 
192. COSMARIUM PARDALIS, Cohn, ‘ Desm. Bong., in Festschr. der natur. Ges. zu Halle, 
1879, p. 9 (sep.), t. 11. fig. 8. C. scabrum, W. B. Turn. in K. Sv. Vet.-Akad. Handl. 
xxv. 1893, no. 5, p. 65, t. 9. fig. 32. 
Long. 44—47 u; lat. 43-45 u; lat. isthm. 12-13 »; crass. 20-21 u. (PI. 21. fig. 2.) 
Hab. Paddyfields, Heneratgodha.  Paddyfield between Kosgoda and Urahaighas- 
mahendai. | 
The specimens observed from Ceylon were slightly smaller than Cohn's African E 
examples, but were the same size as those we observed from Maine, U.S.A. (with 1 
zygospores). The semicells were rectangular with rounded angles, and all possessed 
large hollow granules, exactly like those figured by Cohn (e fig. 86). Between the 
granules are also hexagons of punctulations. 
C. scabrum, W. B. Turn., is unquestionably a poor representation of C, Pardalis, Cohn. 
In size it is intermediate between our specimens and the measurements given by Cohn. 
Turners remark, “granulis . . . . *rosettas' efficientibus," is quite applicable to the 
surface view of a specimen of C. Pardalis containing the chromatophores. There are 
two large pyrenoids in each semicell, and if the granules are focussed above these 
pyrenoids they present the rosette-like appearance which he describes; especially is this 
the case under a low magnification. This appearance, however, cannot be produced in 
an empty cell. The vertical view is oblong-elliptical with parallel sides and possesses 
no protuberances, and therefore the “ rosette-like " appearance is due entirely to optical 
illusion. 
193. CosMARIUM PsEUDOBROOMEI, Wolle, 1884; Desm. U.S. p. 86, t. 51. figs. 36, 37. 
Long. 34-38 p; lat. 31-36 p ; lat. isthm. 8:5-12 w; crass. 16-17°5 p. (PL 21. fig. 4.) 
Hab. With the preceding species. 
194. COSMARIUM PORTIANUM, Arch. in Quart. Journ. Mier. Sci. viii. 1860, p. 235, t. 11. 
figs. 8, 9. 
Var. ORTHOSTICHUM, Schmidle, in Berichte, Deutsch. Bot. Ges. xi. 1893, Heft 10, 
p. 549, t. 28. fig. 7. 
Forma minor: long. 20 »; lat. 14/5 p; lat. isthm. 5 u; crass. 10 y. 
Hab. With the preceding species. 
