4 0. V. DARBISHIRE. 



PLACODIUM ELEGANS. 



Placodium elegans (Link) Th. Fr. Th. Fries, Lich. Scand., p. 1G8. 



Locality. Granite Harbour (New Bay), McMurdo Bay, January 20th, 1902, on 

 felspar porphyry. 



Notes. This is a common plant in most arctic and alpine regions. We have 

 Antarctic records by Dr. Fries (Borchgrevink, p. 208), Prof. Blackmail (' Southern 

 Cross/ p. 320), Prof. Vanhoeffen (German Antarctic), and myself (S. Orkneys, p. 3). 



PLACODIUM MURORUM. 

 Placodium murorum (Hffm.) B.C.* Th. Fries, Lich. Scand., p. 170. 



Localities. Summit of Observation Hill, Winter Harbour, December 12th, 1902, 

 on felspar porphyry and light acid volcanic ash. Granite Harbour, McMurdo Bay, 

 January 20th, 1902, on dark basic lava. " Red Lichen, Cape Royds, at altitude of 

 200 feet in moraine, January llth, 1904, H. T. F.," on basic scoriaceous lava, 



Notes. Nearly all the specimens were either poor to begin with or were damaged. 

 For this reason the above determination is open to doubt. Some of the specimens 

 much resemble the figures in Hooker's "Flora Antarctica," vol. 2, plate 198, fig. 2, 

 which are, however, marked Lecanora miniata. Our species is quite cosmopolitan in 

 distribution. M. Wainio records it for the Antarctic (Belgica, p. 23), and so did 

 Sir J. Hooker (Flora antarctica II., p. 535). 



POLYCAULIONA REGALIS. 

 Polycauliona regalis (Wain.) Hue. Hue, Charcofc, no. 7. 



Locality. " Cape Royds, at various altitudes up to 1500 feet, January llth, 1904, 

 H. T. F.," on basic scoriaceous lava. 



Notes. The material has been determined as Polycauliona regalis with some 

 hesitation. It was preserved in spirit and had thus become almost unrecognisable. 

 The plant is Antarctic only, in distribution, M. Wainio (Belgica, p. 23) and myself 

 (S. Orkneys, p. 3, plate 3, as Placodium f rut iculosum) recording it. 



CALOPLACA CITRINA. 

 Caloplaca citrina (Hffm.) Th. Fr. Th. Fries, Lich. Scand., p. 17C. 



Locality. Cape Royds, on rocks 1500 feet up Erebus, January 4th, 1904, 

 " II. T. F.," on basic scoriaceous lava. 



Notes. This species is almost cosmopolitan. 



