954 ConjugataG, besmidiacese, Cosraarium. 



nec Nonlst. — Parvura, 15 u.. crassum, diameti-o circa sexta, 

 parte longiiis, 28-30 s 24-27, profundissime constrictum, sinu lineari, 

 iiec ampliato, istlimo 7-8 y.. lato; semicellulis subhexagoniis, basi 

 rectis, dorso truncatis, angulis basalibus fere rectis, lateralibus et 

 apicalibus obtuse rotundatis; a vertice visis ellipticis, a latere visis 

 subcircularibus; pyrenoidibus singulis ; membrana glabra. 

 irab. pr. «Abo» Fennise (Elfving). 



49. Cosmarium exlguum Archer in Micr. Journ. IV, 1864, p. 178, 2286 

 t. G, f. 32 et 33, Rabenh. Fi. Eur. Algar. III, p. 164, Lundell Desm. 

 Suec. p. 43, Wille Norges Desra. p. 31, t. 1, f. 14, Cooke Brit. 

 Desm. p. 92, t. 43 f. 4, Wolle Desm. U. S. p. 66, t. 16, f. 13-14. 



— Perpusillum, leve, oblongum, diametro circiter lYo-plo longius, 

 dimidio fere constrictum; semiceilulis subquadratis, angulis obtuse 

 rotundatis, pyrenoidem unicum centralem includentibus. 



Hab. in stagnis prope Dublinum Hibernia? (Archer)» in Scotia, 

 (Cooke), in Suecia (Lundell) et Norvegia (Wille) nec non iu 

 Florida Americse borealis (J. D. Smitii). — Dimens. cell. 25^12 

 ■(Archer). 



50. Cosmarium sexangulare Lund. Desm. Suec. p. 35, t. 2, f. 23, — 2287 

 Submediocre, 22-25 p.. crassum, diametro quinta parte longius, 



42 =s? 34-36, profunde constrictum, sinu lineari, isthmo 11-12 u. 

 iato, margine terminali 15-18 [x. lato ,• semicellulis elliptico-hexa- 

 goniis, dorso truncatis, utroque polo obtuse rotundatis, basi subre- 

 niformi; a vertice visis ellipticis; a latere circularibus ; pyrenoi- 

 dibus (ut videtur) singulis ; membrana subtiliter punctata. 



Hab. in «Narby Skog» prope Upsaliam Suecia? (Lundell), in 

 Hungaria (Istvanffi). — Var. minus Roy et Biss. Japan. Desm. 

 p. 195: speciei duplo minus. Ad «Junsai numa» Japoniae (RoY, 

 Bisset). — Forma minimum Nordst. Freshw. Alg. of N. Zeal. 

 and Austral. p. 60, t. 7, f. 26-27. Botaniska Notiser 1887, p. 162 

 et Notarisia 1888, p. 403, Cosmaviuin sexangulare var. minus 

 Roy et Biss. Jap. Desm. p. 195?: celluhne tantum V3 magnitudinis 

 formse typicae, apicibus levissime retusis, e vertice visis ellipticis, 

 non tumidis, e latere circularius. Ad « Taupo, Oraatangi» in Nova 

 Zelandia (S. Berggren). Long. 14-15 a., lat. 11-12 y., lat. apic. 

 5-8 iJ.. 



51. Cosmarium variolatum Lund. Desm. Suec. p. 41, t. 2, f. 19, Wolle 2288 1 

 Desm. U. S. p. 63, t. 16, f. 3-4, Cooke Brit. Desm. p. 84, t. 36, 

 f. 10, Cosmarium pseudopyramidatum var. imriolalmn (Lund.) 

 Hansg. Prodr. p. 198. — Parvum, 15 u.. crassum, duabus partibus 



