582 THE FUR SEALS OF THE PRIBILOF ISLANDS. 



Lecanora saxicola, Schaer. 



Specimens which may prove to represent a new species Lave been provisionally 

 referred here by Mr. Branth. 



Pertusaria Sp. (?). 



On rocks, St. George Island. 

 Pertusaria panygra (Aoh.) Th. Fr. 



On rocks, St. Paul Island. Sporae solitariae 160 to 190 mile, long., 30 to 60 mil;, lat. 

 (Frustulum alterum ita alterum alia crusta.) Thallus e laliofere immutatus. 

 Stereocaulon coralloides, Fr. 



On rocks, St. Paul Island. 

 Pilophorus robustus, Tuck. 



Under overhanging rocks, St. Paul Island. 

 Cladonia alcicornis, Floeik. 



Under damp overhanging rocks, St. Paul Island. 

 Cladonia decorticata, Floerk. 



On earth and rocks, St. Paul Island. 

 Cladonia pyxidata, (L.), Fr. 



On earth on both islands. 

 Cladonia degenerans, Tuck. 



On earth, St. Paul Island. 

 Cladonia gracilis, (L.), Nyl. var. elongata, Fr. 



Kare on St. Paul Island. The form macroceras, Tuck., is still rarer. 

 Cladonia furcata, Huds. var. racemosa, Fl. 



On earth on both islands. 



Cladonia furcata, I [mis. var. subulata, Fl. 

 On earth on both islands. 



Cladonia rangiferina, Hoffm. 



Common on earth on both islands. 



Cladonia rangiferina, Hoffm. var. sylvatica, L. 



On earth, St. George Island. • 

 Cladonia rangiferina, Hoffm. var. alpestris, L. 



Common on earth on both islands. 

 Cladonia uncinalis, Fr. var. turgescens, Fr. 



On earth, St. Paul Island. 

 Cladonia cornucopioides, (L.), Fr. 



Common on earth on both islands. 



Cladonia bellidiflora, (Ach.), Schaer. 



Common on earth on both islands. 



Sphaerophorum globiferum, DC. 



On rocks on both islands. Medulla I. coerulescit. 



Sphaerophorum fragile, Pers. 



On rocks, mixed with Lecanora tartarea. 



