24 OTTO V. DARBISHIRE. [SEC. ARCT. EXP. FRAM 



Psora demissa (RUTSTR.) TH. FR. TH. FR. Scand. p. 420. Greenl., 

 Spitsb., Icel. Over earth and old wood. 



Psora globifera (Acn.) KBR. TH. FR. Scand. p. 411. Greenl. - 

 Over earth. 



Psora lurida (Sw.) KBR. TH. FR. Scand. p. 413. Greenl., Icel. 

 Over earth. 



Psora rubiformis (WAHL.) FR. - TH. FR. Scand. p. 412. Am., 

 Greenl., Spitsb., Icel. 



Umbilicaria HFFM. 



Umbilicaria Pennsylvania (HFFM.) Hue Lich. Extra, n. 373. - 

 Am., Greenl. On stone. 



Gyrophora ACH. 



Gyrophora anthracina (WuLF.) KBR. TH. FR. Scand. p. 165. 

 Am., Greenl., Spitsb. On stone. E. P. S. N. Ellesmere Land, Frams- 

 harbour (15), Bedford Pim Island (19, 20), Brevort Island (22); North 

 Lincoln (23); King Oscar Land, Harbourfjord (27), Goosefjord (3840, 

 4850); Camp n. 30 (68). 



Gyrophora arctica ACH. - TH. FR. Scand. p. 161. Am., Greenl, 

 Spitsb., Icel. On stone. E. P. S. N. Ellesmere Land, Framsharbour(17). 



Gyrophora corrugata (Acn.) TH. FR. TH. FR. Scand. p. 161. - 

 Icel. On stone. 



Gyrophora cylindrica (L.) ACH. TH. FR. Scand. p. 157. Am., 

 Grenl., Spitsb., Icel. On stone. E. P. S. N. Ellesmere Land, Frams- 

 harbour (17); King Oscar Land, Harbourfjord (27), Goosefjord (38). 



Gyrophora deusta (L.) Fw. - TH. FR. Scand. p. 164. Greenl. - 

 On stone. 



Gyrophora discolor TH. FR. TH. FR. Spitsb. p. 31. Am., Greenl., 

 Spitsb. On stone. 



Gyrophora erosa (WEB.) ACH. TH. FR. Scand. p. 159. Am., 

 Greenl.. Spitsb., Icel. On stone. E. P. S. N. Ellesmere Land, Beitstads- 

 fjord (7), Framsharbour (17). 



Gyrophora hirsuta ACH. TH. FR. Scand. p. 155. Greenl., Icel. 

 - On stone. -- E. P. S. N. Greenland (2); Ellesmereland, Bedford Pim 

 Island (20); King Oscar Land, Harbourfjord (24), Goosefjord (40, 49). 



Gyrophora hyperborea (HFFM.) MUDD. - TH. FR. Scand. p. 160. 

 Am., Greenl., Spitsb.. Icel. On stone. E. P. S. N. Greenland (2); Elles- 

 mereland, Framsharbour (15, 17); King Oscar Land, Harbourfjord (27), 

 Goosefjord (38, 48). 



