642 LICHENES ANTARCTICI. 
nulatis, apotheciis confertis substipitatis concavis disco 
fusco-olivaceo, margine gemmifero demum incurvo crenu- 
lato-lobato. 
Has. Cockburn Island. 
In small cushions, scarcely exceeding À inch in diameter, 
ori inch in height. Thallus entirely concealed under the 
crowded apothecia whose dark olive disks are contrasted with 
their yellowish ash-coloured crenulate margins. It is singu- 
lar for a species of this genus to be fixed to the subjacent 
soil by a central minute disk. A vertical slice of the mois- 
tened apothecium shows, beneath a dark olive pruinose disk, 
the pale yellowish, very shallow, pellucid lamina, resting on 
a thallodal layer. : 
50. L. chrysosticta, n. sp.5 crusta tenui albida nigro-limitata, 
gemmis granulatis confertis, apotheciis confertis conca- 
viusculis disco flavo-lutescenti pruinoso margine gemmis 
crenulato. 
Has. New Zealand, on bark. 
Crust several inches wide. "The investing crust is studded 
with large granular buds which sometimes bear on their tops 
minute orange spots, the rudiments of apothecia. The disk 
consists of a coarse yellow pruina, covering a deep tawny 
lamina. The shields are much larger than those of Lecidea 
ferruginea, Hook., and have a conspicuous thallodal border. à 
51. L. versicolor, n. sp.; substrato tenui adnato atro, thalli 
squamulis subrotundis planis crenulatis albidis demam 
flavis confertis levibus, apotheciis majoribus sessilibus 
concavis disco nigro-pruinoso margine integerrimo sub- 
incurvo. 
Has. Lord Auckland’s group, on bark. 
Patches scarcely 1 inch wide; margin black, being a con- 
tinuation of the substratum. Apothecia larger than de. 
scales. Under a black pruinose disk is a shallow colourless 
and transparent lamina, resting on a yellowish thall 
matter. 
52. L. microphthalma, n. sp.; crusta tenui submembranaces 
albo-cinerascente nigro-limitata rimosa gemmis 
