610 Myxophyceae, Rivularlaceae, Calotbrix. 



9. Calothrix Contarenii (Zanard.) Born. et Flah. Rev. I, p. 355 et in 1391 

 W. et N. Alg. exs. n. 853! Howe in C. H. et S. Phyc. bor. Amer. 



n. 1113! Rivularia Contarenii Zanardini in Bibl. ital. (1839) vol. 96, 

 p. 134, Meneghini Monograph. Nostochin. p. 141, t. 17, f. 2, Ho- 

 mujoactis Contarenii Zanard. Notiz. int. alle Cellul. niar. in Atti 

 del R. Ist. Ven. Vol. VI (1847) p. 77, Rivularia Mediisa3 Menegh. 

 Lett. al Dott. Corinaldi, 1840, p. 1, Mastich07iema Medusce Kuetz. 

 in Bot. Zeit. 1847, p. 179, Schizos. Medusa^ Kuetz. Sp. Alg. p. 328, 

 Rab. Fl. Eur. Alg. II, p. 213, Schizosiphon Chcetopus Kiitz. Phyc. 

 gen. p. 234, Sp. Alg. p. 328, Tab. phyc. II, p. 14, t. 48, f. V, 

 Mastichonema Contarenii Kiitz. in Bot. Zeit. 1847, p. 179, Sp. 

 Algar. p. 326, Rab. Fl. Europ. Algar. II, pag. 227. — Strato cru- 

 staceo, compacto, orbiculari, atro-viridi, nitido, laevi; filis densi.ssime 

 stipatis, parallelis, erectis, modice flexuosis, ad mm. altis, 9-15 [x. 

 crassis, basi decumbentibus incrassatis; vagina crassiuscula, achroa 

 vel luteo-fusca, uniformi vel in ocreas lamellosas infundibuliformes 

 pluries dilatata; trichomatibus 6-8 [j.. crassis, in pilum gracilem 

 longe productis; articulis diam. brevioribus vel aiqualibus; hete- 

 rocystis 1-2 basilaribus. 



Hah. ad terram, rupes et palos ad limitem superiorem maris 

 in freto Sundico et prope Hafniam (Hofman-Bang), nec non ad 

 oras Danite passim (Rosenvinge, J. Schmidt); in sinu Chiliensi 

 (Reinbold, Reinke); in oceano Athintico ad oras Galliae (Bornet, 

 Flahaultj; in gulfo Viscajensi ad cochleas Patellarum (Sauvageau, 

 FoRTi) ; in mari Mediterraneo ad Lunse portum(MENEGHiNi), ad oras 

 Algeriae (Montagne?) et Adriatici ad Muggiam Istrise (Hauck) et 

 ad oras Dalmatise (Hansgirg); in flumine «Revere» ditionis Mas- 

 sasuchetts Amer. bor. et in ins. Jamaica (Collins). — Var. spongiosa 

 Born et Flah. Rev. I, p. 356: strato spongioso, superficie fasci- 

 culato, in;equali, Calotrichen pulvinatam haud male referente. — 

 In rupibus maritimis adnata ad Touho, Novse Caledonise (Vieil- 

 lard). 



10. Calothrix pulvinata (Mert.) Agardh Syst. Alg. p. 71, 1824, Thur. ig 

 Ess. p. 281, Born. et Thur. Not. alg. p. 61, pl. 39, Farl. Anders. et 

 Eat. Alg. exs. Amer. bor. n. 50, Wittr. et N. Alg. exs. n. 575! 

 Born. et Flah. Rev. I, p. 356, J. Schm. Cyan. Dan. p. 112, Cera- 

 mium pulDinatum Mertens in Jiirgens Alg. aquat. dec. IV, n. 5! 

 1817, Calothrix hydnoides Harv. in Hook. Brit. Fl. vol. II, p. 368, 

 Man. of the Brit. Algae, p. 158, Phyc. brit. pl. 305, non Crouan, 

 nec Sonder, Symphyosiphon pulvinatus Kiitz. Phyc. gen. p. 218, 



