78 ADDENDA. 



PAGE 



65. Pyrenothea leucocephala. 



Adde syn, Lecidea leucocephala^ a. glohvlifera (excl. syn. 



Verimcaria aphanes), Schasr. Enum. 138. 

 The parasitic Patellulce are synonymous with Lecidea leuco- 



cephala, c. Lecidina^ Schser. Enum. 131. 



66. Pyrenothea rudis. 



Adde syn. Verrucaria rudisy Schaer. Enum. 214. 



67. Pyrenothea aphanes. 



Adde syn. Lecidea leucocephala^ a. glohulifera (excl. syn. 

 Verr.leucocepTiala)^ Schaer. Enum. 131. 



Pyrenothea niveo-atra. 



Adde syn. Thrombium niveo-atrum, Schaer. Enum. 224. 



Pyrenothea mollis. 



Adde syn. Verrucaria mollis^ Schaer. Enum. 214. 



69. Cliostomum corruyatiim, 



Adde syn. Lecanora varia^ d. graniformis, Schaer. 

 Enum. 82. 



Lecidea Ehrhartiana. 



Adde syn. Lecidea varia^ y. Ehrhartiana^ Schaer. Enum. 82. 



The above synonomy might doubtless have been rendered 

 more satisfactory, had I had access to Schaerer's 'Lich. 

 Exsic./ which valuable set of specimens I regret I do not 

 possess. 



