LICHENES ANTARCTICI. 643 
albidis granulosis, apotheciis minutis sparsis madore con- 
vexis intus albidis disco nigro margine albido integerrimo 
demum gemmifero. 
Has. Cape Horn, on bark. 
Crust scarcely 4 inch wide, soft, whitish ash-coloured, 
when moistened somewhat tawny on the edges of the rime. 
Apothecia scarcely observable with the naked eye; their disk 
consists of a dense black pruina, the lamina is quite white 
and transparent. The thallus resembles that of Lecidea 
parasema, Ach, 
53. L. dichroa, n. sp.; crusta tumido-granulata areolata am- 
bitu subeffigurata sordide aurantiaca gemmis minutissimis 
vix elevatis olivaceis conspersa, apotheciis sessilibus disco 
fusco-rufescenti margine subintegerrimo crasso undulato, 
gemmis punctatis. 
Has. Kerguelen's Land; on rocks. 
Patches scarcely 1 inch wide, rugged with tumid granules ; 
apothecia rather crowded, yet few. Immersed in water it 
immediately imparts to the fluid a fine citron colour. 
10. PARMELIA, Ach. 
54. P. parietina, Ach.; L. U. p. 463. 
Has. New Zealand. 
55. P. plumbea, Ach.; L. U. p. 466. 
Han. New Zealand and Van Diemen’s Land. 
96. P. rubiginosa, Ach.; L. U. p. 467. — 
Has. Lord Auckland's group and Falkland Islands, New 
Zealand and Van Diemen’s Land. 
57. P. saxatilis, Ach; L U. p. 469. 
Has. Falkland Islands and Cape Horn. 
58. P. enteromorpha, Ach.; L. U. p. 494. 
Han. Falkland Islands, Cape Horn, and Van  Diemen’s 
39. P. circinnata, Ach.; L. U. p. 495. 
Has, Cape Horn. 
60. P. conspersa, Ach.; L. U. p. 486. 
