638 LICHENES ANTARCTICI. 
investing ; apothecia largein proportion to the scale on which 
each is borne. 
23. L. albido-plumbea, n. sp. crusta leprosa tenuissima 
albido-plumbea nigro-limitata, apotheciis sparsis subsessi- 
libus, disco atro-pruinoso margine tenui undulato intus 
rufescentibus. 
Has. New Zealand, on bark. 
Patches several inches wide, dull whitish lead-coloured ; 
thallus under a lens appearing broken into. very minute 
whitish scales. Apothecia few, scattered, the black shell is 
continued beneath the Jamina, which is a dusky brown. 
Differs from L. parasema, Ach., by its scaly thallus, and 
scattered apothecia. 
24. L. marginiflexa, n. sp.; crusta albido-glaucescenti tenui 
minute rimosa demum leprosa nigro-limitata, apotheciis 
majoribus confertis madore purpureo-nigris disco pruinoso 
convexo margine tenui flexuoso. 
Has. New Zealand, on bark. 
Crust very white, rather smooth: pruina of the apothecia 
when dry whitish, the disk flat, when moistened convex 
and of a purple black colour. The /amina is shallow, 
whitish and pellucid, resting on an equally shallow layer 
which is brown and lies on much white cortical matter. 
3. GvnRoPHORA, Ach. 
25. G. stygia, n. sp.; thallo orbiculari lobato undulato plicato 
atromurino siccitate atro subtus nudo elevato-punctato 
centro affixo, gemmis centralibus planis minutis. 
Has. Falkland Islands. i $8 
1-2 inches wide, rigid when dry. The upper surface 1s 
destitute of the elevated points that occur in G. murina, Ach. 
no apothecia seen. 
4. VERRUCARIA, Ach. 
26. V. nitida, Schrad.; Journ. 1801, fascic. I. p. 79. 
Has. New Zealand. 
