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. AMDRUP (18981902). Enumeravit EDV. A. 

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

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

 thus brought up to 505: 



Lecidea subcongrua NYL. HUE Add. n. 1159. 

 Cladonia cerasphora WAIN. WAIN. Clad. II. p. 167. 

 Placodium verruculiferum WAIN. AMDRUP p. 131. 

 Caloplaca vitellinula (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 (AcH.) TH. FR. -- TH. FR. Scand. p. 217. 

 Solorina octospora ARN. AMDRUP p. 134. 

 Polyblastia terrestris TH. FR. TH. FR. Poly. p. 15. 



Explanation of Plates. 



Tab. I. fig. 1. Lecidea purissima. 



2. Lecidea solitaria. 



3. Catocarpon depressmn. 

 Tab. II. fig. 1. Pertusaria determinanda. 



2. Aspicilia lesleyana. 



3. Aspicilia nikrapensis. 



Printed 19 October 1909. 



