l6 M. FOSLIE, (Schwed. Südpolar-Exp. 



Explanation of Plates. 



All the figurej from phntoi,'raph5 in natural size. 

 PI. I. 



LitJiotliaiiiniou viagellanicutn FOSL. 

 Fig. I. Tvpically 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. 



Lithothamnion fuegianuni FoSL. 

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



Lithotliamnion variabile FoSL. 



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



Lithotliamnion gratiuliferuni FoSL. 

 Fig. 10. Specimens of this species (i) partly covered by Lithophyllinn i/isccii/rinii (4). — 

 Observatory Island. 

 » II. Specimens of this species (1) confluent with Lifhophylliim decipicns f. mhaiit- 

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



LitJiotliavniioii i-itgosiint FoSL. 

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



Lithothavinion luterocladtim FoSL. 

 Fig. 16 — 22. Specimens of f. f;raiirn from the Observatory Island. 



PI. 2. 



Litliophylluni discoideiiin FoSL. 

 Fig. I. The form circumscripta partly covering LithopJiylliim i/ccipicus f. stihautarctica 

 Fosi,. — Near Rio Grande, Beagle Channel. 

 5 2. A rather young specimen of the typical form co\ering Lithophxllinii ilecipiens f. 



stibaiitarcticti Fosl. — Observatory Island. 

 » 3 — 4. Older specimens partly growing over and covering up extraneous objects. — 

 The Falkland Islands. 



> 5. The form cfiiipacta from the Falkland Islands. 



LitJiopIiyllum (Cquabile FoSL. 

 Fig. 6 — 7. Specimens from South Georgia. 



> 8. Part of a specimen from Louis Philip Land. 

 » g. The type-specimen from the South Orkneys. 



Lithophyllinn falklandicuni FoSL. 

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



Stockholm 1907, Ktingl. Boktryclceriet. 



