966 Conjugatse, Desmidiacese, Cosmarium. 



Hab. in insulis Spetsbergensibus. 



80. Cosmarium Nilssonii Lewin Ueber spanische Susswasseralgen in 23i7 

 Bihang till K. Sv. Vet, Akad. Handl. Band 14, III, n. 1, p. 8, 



t. I, f. 12. — Paullulo longius quam latius, isthmo lato, sinu ox- 

 trorsum ampliato; semicellulis subhemisphsericis, basi rotundata 

 vertice explanato, sensim obtuso vel leniter concavo, lateribus con- 

 vexis, angulis rotundatis; e vertice visis ellipticis; pjrenoidibus 

 (in utraque semicellula) singulis; membrana subtiliter punctata. 



Hab. in prov. Malagensi ad «S. Anton» pr. Malagam Hispa- 

 ni£e (Nilsson). — Dimens. 26,6-32,8 ^; 22,6-25,5, lat. isthmi 12,2- 

 14,6; lat. apic. 9,7 p., cassit, 18,2 ^. Cosmarium foniigenum 

 Nordst. in mentem revocat. 



81. Cosmarium pseudoisthmocliondrum Wille Ferskvandsalger fra No- 23i8 

 vaja Semlja p. 34, t. XII, f. 13. — Submediocre, 21 fjt. crassum, dia- 

 metro 5-6-ta parte longius, 32-36^28-30, in medio sinu lineari 

 profunde constrictum, isthmo 10-12 p.. lato; semicellulis fere ellipti- 

 co-subreniformibus, apice latissime rotundato, vix visibiliter undu- 

 lato, lateribus subconvexis, margine granulato-dentatis; granulis 

 semicellularum marginem versus levissime eraarginatis, radiatim et 

 concentrice dispositis; granulis minoribus ad basin semicellularura 



in series 7-9 verticales ordinatis ; semicellulis e latere visis fere 

 rotundatis, e vertice visis ellipticis; pyrenoidibus singulis (?). 

 Hab. ad «Norra Gaskap, Matotchkin » Novse Semlise. 



82. Cosmarium inornatum Josh. Burmese Desmidieae 1886, pag. 648, s^ip 

 t. XXIV, f. 26-27 et in Notarisia 1886, p. 83. — Mediocre, non- 

 nihil duplo longius quam latius, 44 v 18, fere cylindricura, apice 

 leviter truncato, isthmo 15 jj.. lato, lateribus late rotundatis, centro 

 leviter constricto, angulo latiore; semicellulis a latere conspectis 

 ellipsoideis; membrana crenata, verrucis indistinctis, nullis in cen- 

 tro, ssepe in serie externa modo visis. 



Hab. ad a Rangoon » in Birmania Asise. — Ex Lagerheira Krit. 

 Bemerk. Desm. p, 538, n. 8, vix Cosmarn pseudoatnooni Wille 

 formam sistit. 



83. Cosmarium simplex Gay Essai Monogr. Conjug. p. 62, t. II, f. 2 2320 

 (sub Euastro). — Cellulis mediocribus, SS^^^S, rectangularibus, 

 sinu profundo, lineari, isthmo 10 fx. lato ; semicellulis rectangula- 

 ribus, apicem versus paullum attenuatis, raargine subtiliter denta- 

 tis, lateribus convexis, apice plano, angulis basalibus obtusis; e 

 vertice et latere conspectis ellipticis; pyrenoidibus singulis; mem- 

 brana punctis in series concentricas dispositis obsita. 



