298 GUERNSEY. 
Lecidea concentrica, Dav. 
Fermain Bay. Le Moulin, St. Peter’s. Frequent about Petit 
Bot, on walls and hedgestones. 
Lecidea cupularis, Ehrh. : 
Fermain, Jerbourg. Grandes Rocques. Usually grows at the 
base of boulders and rocks, almost concealed by the vegetation. 
Lecidea ochrophora, Nyl. 
On an old elder-tree on the cliffs above Bec du Nez. 
Lecidea Parmeliarum, Smrft. 
Jerbourg cliffs (Larbalestier). 
Opegrapha herpetica, Ach. 
Guernsey (Mrs. Collings). 
Opegrapha atra, Pers. 
Very common. f. parallela, Leight. Frequent at St. Martin’s. 
f. denigrata, Ach. Guernsey (Larbalestier). f. migrita, Leight. 
Guernsey (Mrs. Collings). f. ochrocheila, Nyl. Lancresse 
Common (Larbalestier). 
Opegrapha Turneri, Leight. 
On a young oak-tree between Fermain and Bec du Nez. 
Opegrapha saxicola, Ach. 
Very common on stones in roadside hedges, and on rocks. 
Opegrapha Chevallieri, Leight. 
Spur Point Albecq. Grantez, Catel. 
Opegrapha saxigena, Tayl. 
On the perpendicular face of a rock in Moulin Huet Bay. 
Opegrapha grumulosa, Duf. 
On rocks between Fermain and Bec du Nez, scarce. 
Opegrapha varia, Pers. 
Common, and very variable. f. diaphora, Ach. Fermain. 
Saints Bay. Mrs. Collings records f. pulicaris, Lightf., f. notha, 
Ach., f. tigrina, Ach., and f. rimalis, Fr.; and Mr. Larbalestier 
f. tridens, Ach. 
Opegrapha caesariensis, Nyl. 
Moulin Huet Bay. 
Opegrapha vulgata, Ach. 
Frequent on various trees: generally distributed. (f. steviza, 
Ach., occurs in Alderney and Sark.) 
