68 OTTO. V. DARBISHIRE. LICHENS. [SEC. ARCT. EXP. FRAM 



Addition. 



Since writing the above report I have succeeded in obtaining a copy 

 of "Lichenes expeditionis G. AMDRUF (1898 1902). Enumeravit EDV. A. 

 WAINIO", printed in the Meddelelser om Gronland in 1905, p. 125 141. 

 As a result the following species must be added to our list, which is 

 thus brought up to 505: 



Leciden subcongrua NYL. HUE Add. n. 1159. 

 ("ladonia cerasphora WAIN. WAIN. Clad. II. p. 167. 

 Placodium verruculiferum WAIN. AMDRUP p. 131. 

 Caloplaca vitcllinula (NYL). DARBISH. HUE Add. n. 510. 

 Squamaria alphoplaca (WNBG.) ACH. TH. FR. Scand. p. 230. 

 Squamaria bracteata (HFFM.) NYL. TH. FR. Scand. p. 223. 

 Buellia groenlandica WAIN. AMDRUP p. 133. 

 Acarospora discreta (Acn.) TH. FR. -- TH. FR. Scand. p. 217. 

 Solorina odospora ARN. AMDRUP p. 134. 

 Polyblastla terrestris TH. FR. TH. FR. Poly. p. 15. 



Explanation of Plates. 



Tab. I. fig. 1. Lecidea purissima. 



2. Lecidea solitaria. 



3. Catocarpon depressum. 

 Tab. II. fig. 1. Pertusaria detcrminanda. 



2. Aspicilia lesleyana. 



3. Aspicilia nikrapensis. 



Printed 19 October 1909. 



