445 



1?. Phacochorda t australis. *. 



Sttlophwa aus trails Harrey. 

 /ia&. Ad Tasnianiain. 



Geu. XIL iHctyOSfpllOn GrevilL 



Char. Thalliis caiilesecns ramosus, teres > iistulosus, 

 contiiiinis , membrauaceus. Fulcrum radicaie discoideum, mi- 

 nutissimum, nudum* Trichophyses hue iliuc sparsae* ~ Stnt- 

 ctura heteromorpha, sublaxa. Stratum corticalc c cellnlis 

 ipinutis siibparallelipipedis holococcodeis lougitudiualiter ordi- 

 watis conflatum. Stratum medullare e eelhilis amplis elon- 

 gatis suhcyiiudricis inanibus in fil amenta longittidinalia oligo- 

 slroraatica laxe conjnncta coatitis eompmitum* 



Thalamic ignota. • — Gonophyses nullae- 



Oedogoiiia solitaria vol irregnlariter approximata, per 

 omnem thallum inordinate sparsa* 



Bgn* Sctfto&iphon Diiby, 3. Agardh (Novit. Flor. Snec, 

 ex Alg. fam.), 



1. Diet yo siphon foeniculaceus Grevill. 

 Scfftosfphon foenlculacens Agardh (Spec» Algar, L 1. 



p. 163). Hulymenia foeniculacea Agardh (Synops. Algar. 

 ScaiidfJi. p t XIX.). Ceramium fibrosum Roth. Conferva 

 foeniculacea Huds. (?♦ fibrosa Spreng. Fucus subtilis 

 Turner. F. flagelliformte Jiirgeus. 



Hab. Mare balticum et borealc. Ad oras Angliae, Hi- 

 berniac, Galliae atlauticas* 



2. Bictyostpbon ramelloans TreTis. (Synops, geacr. 

 Algar.) 



Scytosiphon ramellosus h Agardh. 

 Hub.. Ad eras occideiitalos Stieeiae. 



