1898— 1902. No. 21.] LICHENS. 49 
Arthopyrenia Mass. 
Arthopyrenia analepta (Acu.) Tu. Fr. — Tu. Fr. Arct. p. 272. — 
Greenl., Icel. — On bark. 
Arthopyrenia grisea (Scuteicu.) Tu. Fr. — Ta. Fr. Aret. p. 272. — 
Greenl., Icel. — On bark. 
Arthopyrenia kentrospora Brantu. — Br. Groenl. p.511. — Greenl., 
Tcel. — On bark. 
Leptorhaphis Kre. 
Leptorhaphis epidermidis (Aca.) Tu. Fr. —Tu. Fr. Aret. p. 273. — 
Greenl. — On bark. 
Segestria Fr. 
Segestria mammillosa Tu. Fr. — Ta. Fr. Arct. p. 262. — Green]. — 
On stone. 
Normandina Nyt. 
Normandina viridis (Acu.) Nyt. — Ta. Fr. Arct. p. 256. — Green. 
— Over earth. 
Dermatocarpon Escuw. 
Dermatocarpon botularium Nyu. — Br. Groenl. p. 509. — Greenl. — 
On stone. 
Dermatocarpon cinereum (Pzrs.) To. Fr.— Ta. Fr. Arct. p. 256.— 
Greenl., Spitsb., Icel. — Over earth. 
Dermatocarpon daedaleum Krrutur. — Tu. Fr. Arct. p. 255. — 
Green]. — Over moss. 
Dermatocarpon hepaticum Acu.—Tu. Fr. Aret. p. 255. — Greenl., 
Icel.— Over earth and moss. 
Dermatocarpon miniatum (L.) Scuarr.— Tu. Fr. Arct. p. 953. — 
Am., Greenl., Icel., — Over rocks. 2 
Dermatocarpon rufescens AcH. — Tu. Fr. Arct. p. 254. — Greenl., 
Icel. — Over moss between rocks. 
Endocarpon Hepw. 
Endocarpon pulvinatum Tu. Fr. — Tu. Fr. Arct. p. 257. — Greenl., 
Spitsb. — On rocks. 
