Contribution, 1. 15 j[ 



Codiolnm cylindraceum Fosl. 

 in Tromso Mus. Aarsh. X, p. 189; excl. f. minor. 

 Descr. Codiolnm pusillum Fosl. Arkt. havalg. p. 12; excl. syn. 



„ cylindraceum Fosl. in Tromso Mus. Aarsh. 1. c.; excl. f. 



minor. 

 Fig. » pusillum Fosl. Arkt. havalg. t. 2, fig. 1. 



Exsicc. „ „ Wittr. et Nordst. Alg. exsicc. Nr. 457. 



Syn. Codiolum pusillum Kjellm. N. Ish. Algfl. p. 389; ex parte. 

 „ cylindraceum De-Toni, Syll. Alg. 1, p. 632; excl. 



f. minus. 



Having had the opportunity of seeing L y n g b y e's 

 original specimen of his Vaucheria (Codiolum) pusilla from 

 the Faroe Islands, I have shown, in Tromso Mus. Aarsh. 1. 

 c„ that the plant described by me in Arct. havalg. 1. c. by 

 the name of Codiolum pusillum is not identic with Lyng- 

 b y e's plant, but ought to be regarded a separate species, 

 taking Codiolum in the sense mentioned in Tromso Mus. 

 Aarsh. 1. c. I therefore have called it C. cylindraceum. 



In the eastern part of the district I met with this spe- 

 cies in great number, growing on rocks near high-watermark, 

 and almost fully agreeing with the form found some years 

 ago at Gjesvser in West-Finmarken. 



Distribution: Found at Pasvig, local but abundant. 



Codiolum pusillum (Lyngb.) Fosl. 

 in Tromso Mus. Aarsh, X, p. 190; Vaucheria pusilla Lyngb. Hydr. 

 Dan. p. 79, t. 22 B. 

 Descr. Codiolum pusillum Fosl. 1. c. 



Syn. Vaucheria pusilla De-Toni, Syll. Alg. 1, p. 408. 



Codiolum longipes Holmes, Alg. Brit. Nr. 33; sec. spec, ex 

 herb. Holmes. 

 n pusillum Kjellm. N. Ish. Algfl. p. 389; ex parte. 

 „ „ De-Toni, Syll. Alg. 1, p. 631; ex parte. 



Non Fosl. Arkt. havalg. p. 12. 



This species is characterizing itself by its club general- 

 ly being shorter than tfce stipe, subcylindric or not seldom 



