2 O. V. DARRISHIRR. 



hniifl lichens form pitr crrrfli'iiri- the outpost,s <if plant-life, anrl their collection is of the 

 greatest biol()gical interest, as they occur in places where no other plants at all are met 

 with. Mosses and Algae accompany the lichens only up Uj a certiiin point. No doubt 

 more lichens might have been fouml if an expert lichenologist had accompanied 

 Captain Scott ; but, as it is, the material of the ' Discovery ' is of very great interest. 

 Most interesting is the discovery on Mount Erebus at a height of 1500 feet of 

 Gyrophiira nnthrncina, Poli/caulloua 7-efjatls, Qtloplacn citriita, and Ni'itropoi/an iiubi- 

 .ranthum. The first and last of these four lichens arc also recorded from Mount Terror. 

 All but the second of the four are idso Arctic species. Of .^till greater importance is 

 the finding at the highest point reached on the ridge of the Western Mountains — that 

 is, at a height of 5000 feet — of a few bits of lichen. Two bits remained indeterminable, 

 and a- third — with some misgiving, it is true — was relegated to Jjixnmira suhfiiscii. 

 But it is of sufficient importance to discover any living organism at all in such a 

 locality. Amongst the twenty-five species of lichens, there were five new to science. 



The lichens of the ' Discovery ' were collected in the neighbourhood of Granite 

 Harbour, McMurdo Bay ; at the Winter Harbour ; on ^Mounts Erebus and Terror ; 

 and on the AVestern Mountains. The various sul)strata on which the lichens were 

 found are moss, felspar-porphyry, dark basic scoriaceous lava, dark basic volcanic 

 agglomerate, dark basic lava, dark basic tuff, and light acid volcanic ash. I have to 

 thank Mr. G. H. A. Hickling fur kindly naming the material on which the lichens were 

 growing. 



ENUMERATION OF THE SPECIES. 

 Lecidka aukictlata, 



Lechlm atiririihitfi Th. I'r. Tli. Tries, Tiicli. S<.'Hnd., p. 4'J!>. 



Locality. — Granite Harbour, McMurdo Bay, January liOth, rj02, on felspar 

 porphyry. * 



Noti'K. — The specimens of this species, only a few apotliccia of which were found, 

 belonged to the var. (li<lucen.s (Nyl.) Tli. Fr. ; crnsta fen' mdln. On the same stone 

 were specimens of Placodium murorum and an imdetermined species of Emlocarpmi. 

 A few apothecia of Licnnora jnalytropa were also noticed on the same bit of porphyry. 

 Lrcidt'ti miriatldtit is also recorded from the Arctic regions and from the northern and 

 alpine parts of Knropr. 



MnrzocAKi-oN ckocrapmk'UM. 



Rhizocarpon geograpliicum (L.) D.C. Th. Fries, Lich. Sciind., p. 022. 



Locality. — Granite Harbour, McMurdo Bay, Jainmry 20th, 1902, on granite. 

 N(iti'.<t. — This species is one of the most cosmopolitan of lichens in its distribution. 

 It has Itcen recorded for the Antarctic by MM. line (Charcot, no. 1(>), and Wainio 



