LICHENOLOGY OF ICELAND 11315) 
IV. -GCYCLOCARPIN EIER 
DIPLOSCHISTACEE. 
(Diploschistes). 
Diploschistes. 
D. scruposus L. (D. B., p.212, Urceolaria). 
Greenland. G. Brit. 
GYALECTACEZE. 
(Gyalecta.) 
Gyalecta. 
G. cupularis Ehrh. (D. B., p. 217). 
Not found in Greenland. G. Brit. 
G. geoica Ach. 
Upon moss on blocks of basalt, Seydisfjord, O. Galloe, 1913. New 
to Iceland. G. Brit. 
G. foveolaris Ach. (D.B., p. 217). 
Not found in Greenland. G. Brit. 
COENOGONIACEZÆ. 
(Coenogonium, Racodium). 
Coenogonium. 
C. ebeneum Dillw. (D. B., p. 202, Cystocoleus). 
Not found in Greenland. G. Brit. 
Racodium. 
R. rupestre Pers. 
On basalt, Seydisfjord, O. Galloe, 1913. New to Iceland. G. Brit. 
LECIDEACEE. 
(Bacidia, Lecidea, Rhizocarpon, Catillaria, Lopadium, Toninia). 
Bacidia. 
B. abbrevians Nyl. (D. B., p. 217, Gyalecta). 
Not found in Greenland and in G. Brit. 
B. atrosanguinea Schaer. (D. B., p. 216, Gyalecta). 
Not found in Greenland. G. Brit. 
B. arceutina Ach. (D. B., p.217, Gyalecta, with var. egenula Nyl. 
and var. albescens). 
Not found in Greenland. G. Brit. 
The Botany of Iceland, Vol. II. 8 
