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TItE JOURNAL OF BOTANY 
7. Lecanora polytropa (Ehrh.) Th. Fr. Mount Erebus. 
8. Parmelia quarto, Darbish. Mount Erebus. 
9. Neuropogon melaxanthum (Ach.) Nyl. Mount Erebus. 
*10. Physcia nitescens Hue. Mount Erebus. 
*11. Puellia Charcotii Hue. Mount Erebus. 
12. Puellia frigida Darbish. Mount Erebus. 
*13. Puellia pernigra, sp. nov. Mount Erebus. 
14. Acarospora chlorophana (Wnbg.) Mass. Mount Erebus. 
*15. Verrucaria Bacovitzte Wain. Elephant Island. 
It will be seen that four species are new to South Victoria Land, 
and none, to my knowledge, have been recorded previously for 
Elephant Island. 
Buellia pernigra, sp. n. Thallus crustaceus, sed bene evolutus, 
convolutus, et tuberculatus, parmeliam quartam simulans. Proto- 
thallus nigerrimus, sed vix visibilis, superficiem minute rugosus. 
Meta thallus nigerrimus, tuberculatus, convolutus, densissime apo- 
theciis spermogoniisque instructus. Apothecia nigerrima, rotundata, 
ad 0*5 mm. lata; epithecium carbonaceum, planum, aut rarius paullo 
Fig. 1 .—Buellia pernigra, sp. nov. Vertical section of thallus, showing struc¬ 
ture of thallus, mature and immature apotheeium, and spermogonium 
magn. 75. 
convexum; parathecium carbonaceum; hypothecium hyalinum ; spora? 
octonae bicellulares aut rarius unicellulares, fuseescentes, 0010- 
0-012 x 0*006-0*008 mm. magnse. Spermogonia bene evoluta, ostiolis 
instructa nigerrimis ; spermatia recta, 0*003 x 0-0005 mm. magnse. 
Habitat ad saxa antarctica Montis Erebus. 
The metathallus is very black in colour, and it arises from the 
substratum abruptly to a thickness of 1 to 2 mm. It is more or less 
convolute or almost fruticulose. There is no clearly visible proto- 
thallus at the margin, though immediately below the edge of the 
overhanging thick metathallus there may be seen a very thin black 
portion of the lichen which would be the pro to thallus. The small 
tubercular portions can be seen to arise from this part The few 
plants observed did not exceed 1 cm. in diameter. Externally apo¬ 
thecia and sterile portions of the metathallus are equally quite black. 
Put the sides of the upright pillars of the metathallus may occa¬ 
sionally appear somewhat lighter. The structure of the metathallus 
is of the kind usual in species of Puellia. There is a loose medulla of 
thickish hyphse in close contact with the substratum. It is white in 
