110 BROOKLYN BOTANIC GARDEN MEMOIRS 



2. Leptoraphis epidermidis (Ach.) Th. Fr. On bark, Bordeaux, 



1381. 



3. Porina DEsQUAMESCENS Fee. Without data, 1288a. 



4. Porina nucula Ach. On Erythrina, St. Peter, 1444b, 1445. 



5. Pyrenula leucoplaca (Wallr.) Koerb. On bark, Smith's Bay, 



1276a. 



6. Anthracothecium Bretjtelii Muell. Arg. Flora 68: 339. 1885. 



On bark, without definite locality, collected by Breutel. En- 

 demic. 



7. Anthracothecium canellae-albae (Fee) Muell. Arg. On 



Cephalocereus, Smith's Bay, 1274a; on twigs of Guettarda, 

 Crown, 450 m. altit., 1357. South America. 



8. Anthracothecium libricolum (Fee) Muell. Arg. On Melicocca, 



Tutu, 468a; on same, Smith's Bay, 1276, 1282; on Erythrina, 

 St. Peter, 1444. 



9. Anthracothecium ochraceoflavum (Nyl.) Muell. Arg. 



On bark of coconut palm, near Charlotte Amalia, 489; on Trichilia, 

 Tutu, 467. 



10. Anthracothecium pyrenuloides (Mont.) Muell. Arg. On bark, 



without definite locality, collected by Dr. Forel. Recorded 

 by Nylander in Flora 63: 127. 1880. 



11. Melanotheca foveolata Muell. Arg. On bark, near Tutu, 1287. 



Cuba. 



12. Parathelium indutum Nyl. On Cephalocereus, Smith's Bay, 



1274; on bark, Bordeaux, 1382 in part. Porto Rico, Colombia. 



13. Parmentaria astroidea Fee. On bark, Bordeaux, 1382 in part. 



14. Arthonia anegadensis Riddle Mem. New York Bot. Gard. 6: 



579. 1916. On Bontia, Smith's Bay, 1286. Anegada. 



15. Arthonia conferta (Fee) Nyl. On Plumeria, Tutu, 1484. 



16. Arthonia gregaria (Weig.) Koerb. On bark, Bordeaux, 1380. 



17. Arthonia ochraceella Nyl. On bark of old fallen branch, 



Crown, 450 m. altit., 1362. Cuba. 



18. Arthonia rubella (Fee) Nyl. On Melicocca, Tutu, 468b. 



19. Arthonia subrubella Nyl. Collected by Dr. Forel. Recorded 



by Nylander in Flora 63: 127. 1880. 



20. Arthonia. 17 On Guilandina, Smith's Bay, 1281 p.p. 



21. Arthonia. On Plumeria, Tutu, 463. 



22. Arthothelium macrothecum (Fee) Mass. On mango, St. Peter, 



1247. 



23. Opegrapha acicularis Riddle sp. nov. 



Thallus epiphloeodes crustaceus effusus determinatus nigrolimitatus, albidus 



17 There are included in this paper three species of Arthonia the determination 

 of which it has not been possible to complete in the time at my disposal. L. W. R. 



