650 LICHENES ANTARCTICI. 
Thallus 5-6 inches wide ; reddish, especially in the younger 
parts; uneven; covered with down on both surfaces, and 
especially the upper, yet in some lobes this downiness is ob- 
solete. The fracture of the thallus is bright yellow. No 
apothecia were found. 
13. PEgLTIDEA, Ach. 
97. P. canina, Ach. L. U. p. 517. 
Has. Falkland Islands and Kerguelen’s Land. 
98. P. polydactyla, Ach. L. U. p. 519. 
Has. Lord Auckland's group and Campbell Island. 
99. P. venosa, Ach. L. U. p. 514. 
Has. Kerguelen's Land. 
The specimens are barren, and we are thus rather doubtful 
of the precise species; flat granular buds are present at the 
margins, and the /Aallus is more smooth beneath than in 
European specimens. 
100. P. horizontalis, Ach. L. U. p. 515. 
Has. Kerguelen's Land. 
14. NEPHROMA, Ach. 
101. N. cellulosa, Ach. L. U. p. 523. 
Has. Cape Horn. 
15. DUFOUREA, Ach. 
102. D. collodes, n. sp.; podetiis erectis basi tumidis cylin- 
draceis sursum explanatis subramosis perforatis subpelu- 
cidis flavescenti-albidis, apotheciis minutis conglomeratis 
sessilibus fuscis marginatis. ; 
Has. Campbell’s Island, Lord Auckland's group, Falkland 
Islands, Cape Horn, New Zealand, and Van Diemens 
Land. 
The thallodal margin of the apothecia at length assumes 
the colour of the disk ; podetia smooth, pellucid when moist- 
ened. 
16. Cenomyce, Ach. 
108. C. coccifera, Ach.; L. U. p. 269. 
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