ADDENDA. 73 



PAGE 



23. Sagedia viridula. 



Adde syn. Verrucaria viridula^ Schaer. Enum. 215. 



24. Sagedia aggregata, 



Adde syn. Opegrapha crassa^ a. obscura, Schaer. Enum. 

 160. 



Sagedia circumscripta, 



Schaerer (Enum. 92) says "Hujus specie! {Urceolaria 

 calcarea) forma rite nondum explicata videtur Verr. 

 circumscripta^ Tayl., in ' Mack. Hib.' ii. p. 96, ex. 

 specim. in coll. Salw. ! asservato." An inspection of 

 our Plate VIII. will nullify this remark. 



25. Chiodecton alhidum, 



Adde syn. Chiodecton myrticola, /3. Syncesia, Schaer. 

 Enum. 226. 



27. Fertusaria conwiunis, 



Adde syn. Pertusaria communis, Schaer. Enum. 229. 



28. Pertusaria ceuthocarpa. 



Adde syn. Pertusaria rupestris, fallax, Schaer. Enum. 227. 



29. Fertusaria fallax. 



Adde syn. Pertusaria communis^ fallax^ Schaer. Enum. 

 229. 



Pertusaria melaleuca. 



Adde syn. Pertusaria leioplaca, fallax, Schaer. Enum. 230. 



Pertusaria Hutchinsice, 



Schaerer (Enum. 231) says '' Thelotrema Hutchinsice, Borr., 

 in 'E. B. Suppl.,'t. 2652. vel hujus specie! {Pertusaria 

 glomeratd) formam fallacem offerre vel ad Urceolariam 

 verrucosam pertinere videtur." The sporidia decide 

 its proper arrangement as a Pertusaria. 



The description of Pertusaria glomerata seems to accord 

 very satisfactorily with Mr. Borrer's Pertusaria, on 

 moss from the highlands of Scotland. (Plate XI. fig. 2.) 

 " Pej't. glomerata, thallus membranaceo-cartilagineus, 

 albus, tenuissimus, effusus. Apotheciorum verruca? 

 globulares, agglomeratae, pleraeque uniloculares, circa 

 ostiola majuscula nigricantia depressae." Scha;r. Enum. 

 230. I have had no opportunity of examining his 

 *Lich. Exsicc' 120. 



