112 BROOKLYN BOTANIC GARDEN MEMOIRS 



26. Opegrapha Bonplandi Fee. On Melicocca, Magen's Bay, 1310; 



on bark, Mariendahl Road, 1476. 



27. Opegrapha vulgata Ach. On Melicocca, Tutu, 468. 



28. Graphis scripta (L.) Ach. On bark. Smith's Bay, 1277. 



29. Phaeographis inusta (Ach.) Muell. Arg. On Acacia, near 



Charlotte AmaHa, 486; on Giiilandina, Smith's Bay, 1278; 

 without locaHty, 464. 



30. Chiodecton (Sect. Enterographa) sp. On Erythrina, St. Peter, 



1445a. 



31. Gyrostomum scyphuliferum (Ach.) Fr. On Plumeria, Tutu, 



465; on Acacia, near Charlotte Amalia, 487, 494. 



32. BiLiMBiA CUPREA Massal. in Lotos (1856) 77. 



Lecidea cupreorosella Nyl. Mem. Soc. Sci. Nat. Cherb. 5: 122. 



1857- 

 Biatora cupreorosella Tuck. Syn. N. A. Lich. 2: 34. 1888. 

 On old brick, St. Peter, 1442. Eastern United States, Europe. 



33. Bacidia ALBESCENS (Am.) Zwackn. On Erythrina,* St. Peter, 



1445b. 



34. Cladonia pityrea 1. SQUAMULIFERA Wainio. On rocks, slope of 



Crown, 1440. 



35. Leptogium chloromelum (Sw.) Nyl. On bark, Cowell Point, 



103, 172; on Pisonia roots, Water Island, 153. 



36. Leptogium tremelloides (L. f.) S. F. Gray. On tree-trunk, 



Crown, 1 36 1. 



37. Leptogium tremelloides var. caesium (Ach.) Hue. On rock 



near Bonne Resolution, 447. 



38. Lecanora cinereocarnea (Eschw.) Wainio. Without data, 23a; 



on Guilandina, Smith's Bay, 128 1. 



39. Lecanora granifera Ach. On bark, Mariendahl Road, 1476a. 



40. Lecania euthallina Riddle sp. nov. 



Thallus crustaceus uniformis effusus crassus rimoso-areolatus, areolis 0.2-0.4 

 mm. latis leviter convexis contiguis, cinereus vel sat pallide fuscescens; hypothallo 

 nullo. Gonidia cystococcoidea. Apothecia 0.6 mm. (0.4-1.0 mm.) lata, numerosa 

 partim caespitosa superficialia sat elevata regularia, disco concaVo castaneo vel 

 fusco-nigricante nudo, margine proprio tenue disco concolore, margine thallino 

 integro vel demum crenulato crasso prominente thallo concolore; epithecio fulvo; 

 hymenio et hypothecio incolore. Asci 8-spori. Sporae incolores oblongae bilocu- 

 lares haud placodiomorphae, 10-12 x 4-5 ju. 



On rock. Tutu, St. Thomas, collected by Dr. N. L. Britton, Mrs. 

 E. G. Britton, and Miss Delia W. Marble, Feb. 8-9, 1913, no. 469 

 (type!). 



Lecania euthallina differs from L. erysibe (Ach.) Th. Fr. in the much 

 better developed thallus (whence the specific name), it being compact. 



