LICHENES ANTARGTICI. 637 
16. L. scabra, Tayl.; in Flor. Hib. p. 121. 
Has. Falkland Islands. 
17. L. quadricolor, Borr.; Engl. Bot. t. 1185. 
Has. Falkland Islands. 
18. L. vernalis, Ach.; L. U. p. 198. 
Has. New Zealand. 
19. L. rupestris, Ach.; L. U. p. 206. 
Has. New Zealand. 
20. L. disseminata, n. sp.; verrucis in substratum tenue ni- 
gricans tartareis albidis sparsis subrotundis subrugosis 
foraminulosis, apotheciis confertis demum immarginatis 
confluentibus disco rufescenti, lamina pellucida crassa 
insuper substantiam albam corticalem posita. 
Has. New Zealand. 
Patch indeterminate. Warts of the size of poppy-seeds, 
apothecia a little larger, their thin border observable only in 
the young state. It is allied to Lecanora involuta, Tayl. 
21. L. glaucopa, n. sp.; crusta effusa tenui contigua suble- 
prosa albido-cinerea nigro-limitata, gemmis minutis albidis 
confertis glauco-punctatis, apotheciis sessilibus sparsis 
intus albidis disco nigro-pruinoso margine tenui atro 
undulato. 
Has. Cape Horn, on bark. 
1-2in. wide, surface uneven; buds in minute whitish papule, 
each usually tipped with a single glaucous point observable 
in the moist state. A vertical section of the apothecium 
shews a thin pruinose black disk, the Jamina colourless and 
transparent, resting on white cortical matter ; the black cup 
containing the Zamina is deficient below it. 
22. L. mamillata, n. sp.; thallo cæspitoso fusco-olivaceo 
crustaceo squamoso subtus centro affixo, laciniis adscen- 
dentibus crenatis, gemmis confertissimis elongato-granu- 
losis demum ramosis apice fuscis, apotheciis sessilibus 
atris disco demum convexo margine tenui atro demum 
obsoleto. 
Haz. Falkland Islands. 
Tuft one-tenth of an inch high; suósiratum thin, black, 
