COSMARIl'M. 



203 



83. Cosmarium bireme Norclst. Desm. Brasil. 1869, p. 212, t. 3, f. 33; W 



& G. S. West, Freshw. Alg. Ceylon, 1902, p. 165, t. 20, f. 30. 



Forma angulis basalibus subrectangularibus. 

 Long. 11/*; lat. 10/t; lat. istbm. 3/*; crass. 9m. 

 Sab. — Mansang, near Hispaw (No. 24193). 



84. Cosmarium subprotuberans. W. & G. S. West, Alg. Madag. 1895, p. 57, 



t. 6, f. 40. 



Var. subquadratum var. n. (PI. xii, fig. 17). 



Var. sinu angusto-lineari, lateribus semiccllul mini raiims diverp ntxbm 

 apice truncato-retuso in medio. 



Long. 19-23*5/*; lat. 17-2 V; lat. isthm. 4-8-5-2/*; craw. 15-17/*. 

 Ha b.— Mansang, near Hsipaw (No. 24193). 



85. Cosmarium pseudonitidulum Nordst. Norges Desm. 1873, p. 16, t. 1, f. 4. 



Var. validum nob. 

 O. pachydermum Lund. var. minus Nordst. L c. p. 18, t. 1. f. 7. 



Long. 63-67/*; lat. 48*5-51/*; lat. isthm. 17-19/*. 



Kab.—In swamp, Katha (No. 22677). Mansang, near Hsipaw (No. 24193). 



86. Cosmarium gfanatum Breb. in Ralfs Brit. Desm. 1*48, p. 96, t. 32, f. 6. 

 Sab.— Minywa, Pegu District (No. 21975). 



Cosmarium ik^quaupelkicum W. & G. S. West, Alg. Madag 1895, p. 54, 



87. 



6. f. 28, 29 



H 



In springs on the river-bank, Bhamo (No. 21501). Mansang, near Hsipaw 



24193) 



88 



Cosmarium retusum (Perty) Rabenh. Flo, Europ. Alg. iii, 1868, p. 167 

 Lund. Desm. Suec. 1871, p. 36, t. 3, f. 3. 



membrana punctata, punctis ad angulos basalc 



(a) Forma sine granuiis, meiuuian* t , . 



1»; Icibus selellularum leviter protract* et angnsUonbn, 



f ortioribus ; apicib 



Lo D g. 32-5, ; lat. 23,; lat. apic. 11-5,; lat. isthm. 6, 

 Bab.-ln the Kan-gyi at Mudon (No. 24505) 

 (b) Forma minor, 



picibns semicellularun, minns protract is ; membrana puncUf 



llg. 26,; la, 19,; la, apic. 10*,; la, is.bm. 6-5,; era,,. 12, 

 tf a 4.-With the preceding form (No. 24o0o) 



89 



Arch, in Pritch. Infus. 1861, p. 732 



Cosmarium polygonum (Nag) Arch, m • j f 9 



„.-. „„l„„nn»m Nag. Gat, eins. Alg. 184», p- . 



Euastrum polygonum Nag 



Long. 13-5-U,; la, H-13-3,; lat- is*- 2^ 



ffoi.-Burdwan, in flooded rice-fields (No. 24674). 



crass. 10-5, 



