310 THE MARINE BOTANIST. 



C, tortuosa. Grows on rocks and algse. Com- 

 mon. Filaments rigid, slender, much curled and 

 twisted; forms closely interwoven strata, several 

 feet in diameter, of a pale or full green colour. 

 Articulations two or three times longer than 

 broad. 



C. iniplexa. Grows on rocks and algse. Tor- 

 quay, Gwyllyn-vase Bay, Falmouth, Mr. W. P. 

 Cocks. Mount's Bay, Cornwall. Berwick. Frith 

 of Forth. Miltown Malbay. Filaments very 

 slender, flaccid, half as thick as C. tortuosa, with 

 stouter joints ; forms densely interwoven strata, or 

 little tufts on the branches of other algae. 



C. coUabens. At Yarmouth, on a floating piece 

 of deal. " Filaments three or four inches long ; twice 

 as thick as those of C. serea ; of a splendid verdi- 

 gris-green colour, which is fully preserved in 

 drying 5 very gelatinous, adhering most closely to 

 paper." This species is believed to have been only 

 once found by Sir W. J. Hooker. 



C, iangioides. Grows on submarine rocks, &c. 

 Torquay. Breakwater, Plymouth. Port Ballan- 



