OP ARTS AND SCIENCES. 185 



up, and the former should appear to be also, as the learned author has 

 of late described new S[)ecies of Gyalecta (Add. nov. in Flora Ratisb. 

 1875, 1876), though witliout any indication of his present opinion of 

 the limits and place of tlie genus. Possibly, then, the new Urceolarii- 

 form genus from Kerguelen's Land may hereafter come into favor. 



To this it is only necessary to add that the fragment of rock upon 

 which apothecia of BuelUa parnsema, as I certainly considered them, 

 appeared, is no longer within reach. Dr. N} lander is of opinion that 

 they are " probably to be referred to "the closely related B. wyriocarpa, 

 which he has recognized on other fragments. But the former is a 

 cosmopolitan lichen, and may well occur also. 



