l6 M. FOSLIE, (Srhwed. Südpolar-Exp. 



Explanation of Plates. 



All the fic^urcs from phcito-^raph^ in natural size. 

 PI. I. 



Litliothaniniou viagcllaincmn FOSL. 

 Fig. I. Typically developed specimen from the Falkland Islands. 

 >' 2. A part of the type-specimen from the Straits of Magellan. 

 » 3. An irregularly developed specimen from the Falkland Islands. 



Litliotlianinion fuegiaiiiim FoSL. 

 Fig. 4 — 6. Specimens from the Falkland Islands attached to decaying roots. 



Litliothaiunion variabile FoSL. 

 Fig. 7 — 9. Specimens from the Falkland Islands. 



Lithothamnion gramilifcrum Fo.SL. 

 Fig. 10. Sjiecimens of this s])ecies (1) partly covered by Litlidi^liylliiiii iliscciilcmu (4). — 

 Observatory Island. 

 » II. Specimens of this spe( ies (1) confluent with Lithopliyllinii decipinn f. suluuit- 

 arctica (5), or the one partly covering the other. — Observatory Island. 



LitIiothavinio)i rrigosinit FoSL. 

 Fig. 12 — 15. Somewhat varying forms of the species. — Observatory Island. 



Lithothamnion Jieterocladum FoSL. 

 Fig. 16 — 22. Specimens of f. s^racilis. from the Observatory Island. 



PI. 2. 



LitJiophylliiin discoideiim FoSL. 

 Fig. I. The form iircmnscripta partly covering Litliophylliiiii tteapicin f. iiit>antarctica 

 FosL. — Near Rio Grande, Beagle Channel. 

 » 2. A rather young specimen of the typical forin covering Liili(ipliyllt(iii i/ccipiens f. 



aubantarctica Fosl. — Observatory Island. 

 » 3 — 4. Older specimens jiartly growing over and covering up cNtraneous objects. — 

 The Falkland Islands. 

 5. The form coDipacta from the Falkland Islands. 



Lithophyllum ceqiiabile FoSL. 



Fig. 6 — 7. Specimens from South Georgia. 

 » 8. Part of a specimen from Louis Phili]3 Land. 

 > q. The type-specimen from the South Orkneys. 



Lithophyllnin falklandicuni FoSL. 

 Fig. 10 — 13. Si)ecimens from the Falkland Islands attached to shells of mussels. 



Stockholm 1907. Kungl, liolctryckeriet. 



