Myxophyceee, Lyngbyese, Symploca. 301 



p. 107, t. II, f. l-I, Johs. Sclini. Cya'.i. Dan. p. 5G, c. ic, Johnsoii 

 in C. H. ct Sctch. Phyc. bor. Aiucr. n. '203! GarJn. in C. II. 

 et S. Phyc. b. Anicr. n. OOT)! Calothrix involvens Aresch. Alg. 

 scand. exs. n. 82, lUennotlirix elegans Knetz. Phyc. geriu. p. 181, 

 Calothrix semiplena Harv. Phyc. brit. Synops. pag. XXXVIII, 

 t. CCCIX, Leibleinia Lenormandi Kuctz. in Bot. Zeit. V, p. 194, 

 Hypheothrix involvens Kuetz. Sp. Alg. p. 269, Tab. Phyc. I, 

 p. 42, t. 71, f. III, Rab. Fl. Eur. Alg. II, p. 81, Symploca elegans 

 Kuetz. Sp. Alg. p. 272, non alibi, Symploca pulchra Kuetz. Tab. 

 Phyc. I, p. 44, t. 76, f. I, CalotJirix hydiioides Crouan Alg. 

 marines du Finistere n. 345! Calothrix rigida}iB.vv.¥Y\Qn&\. Isl. 

 Alg. n. 116 (fide Gom.), Sympl. Haroeyi Le Jol. Liste p. 29, 

 Thuret Essai de class. des Nostoch. I, p. 379, Batt. Mar. Alg. on 

 Berw. 1889, p. 18, Sympl. hydnoides b pulchra Rab. Fl. Eur. 

 Alg. II, pag. 157, Sympl. Antitlarum Crouan in Maze et Schramm 

 Essai de Class. des Alg. de Guad. p. 29, Schizosiphon hydnoides 

 Crouan Fl. du Finist. p. 116, Neadelia flmbriata Bompard in Erb. 

 Critt. ital. Ser. II, n. 73, Osciltaria hydrurimorpha Crouan in 

 M. et S. Ess. de class. Alg. de la Guadel. II ed., p. 18, Oscitlaria 

 symplocarioides Crouan in M. et Schr. op. cit., p. 18, Calothrix 

 Harmyi Lloyd Alg. de rOuest de la France n. 386 (fide Gom.). 

 — Fasciculato-ciiespitosa, sordide raro nigro-chalybea, fasciculis 

 ad 3 cm. altis, erectis, spiniformibus, ad basim sjepe decoloratis ; 

 filis densissime implicatis, subagglutinatis, passim pseudoramosis, 

 inte^iualiter et angulose tortuosis; vaginis tenuibus, paulum mucosis, 

 chlorozincico jodurato SBgre ccerulescentibus; trichomatibus aerugi- 

 neis, 6-8 [i. crassis, apicem versus Siepe torulosis; articulis diam. 

 paulo longioribus vel ad 2-pIo brevioribus (in trich. crassioribus) 

 5-14 {!.. longis, contentu granuloso dissepinienta plerumque obdu- 

 cente farctis; cellula apicali leniter intiata, calyptra nulla. 



Hab. algis maioribus, rupibus et arense adfixa ad oras Norvegice, 

 (BoYE, WiTTROCK ct NoRDSTEDT), Bahusijfi (Areschougj et passim 

 in Suecia (Agardii), oceani Atlantici in Scotia ad ostia tluvii Clyde 

 (Bai.fourj, in Anglia (Cresswell, Cutler, Batters, Holmesj, Dania 

 (HoFMAN Bang, Rosenvinge), ad oras atlanticas GallisB (Lloyd, 

 Thuret), ad ostia Durii (J. Newton), in litore Mediterraneo (Le- 

 normand), ad oras Numidiie (Debray), ad Tingin (Schousboej, Ge- 

 nuam (Bompard), Massiliam (Bornet), in Corsica (Soleirolj, ad oras 

 maris Adriatici (Hauck), Dalmati;e (Meneghini), in Lithothamniis 

 ad ins. «Sciathos» (Miliarakis;, oceani Indici ad ins. Ceylon (Feij- 



