534 



GRAPHIDACEAE. 



9. Arthonia platygraphidea Nyl. Act. Soe. Sci. Fenn. 7: 483. 1863. 



On bark, New Providence, on Soldier's Koad, and Cat Island, vicinity of The 

 Bight : — Florida ; Cuba ; Porto Rico ; Mexico ; Brazil. 



10. Arthonia atrata (Fee) Muell. Arg. Mem. Soc. Phys. Hist. Nat. Geneve 



29«: 59. 1887. 



Graphis atrata Fee, Essai Crypt. 35. 1824. 



Not Arthonia atrata Tuck. Genera Licli. 222. 1872. 



On bark. New Providence : — tropical America. 



2. ARTHOTHELIUM Mass. 

 1. Arthothelium macrothecum (Fee) Mass. Eic. Lich. Crost. 55. 1852. 



Arthonia macrotheca Fee, Suppl. Essai Crypt. 42, pi. 40, f. 18. 1837. 



On bark, Abaco, at Marsh Harbor, and New Providence, at Soldiers' Home : — 

 widely distributed in tropical regions of both hemispheres. 



Family 2. GRAPHIDACEAE. 



Spores four- to many-celled 

 Spores colorless 



1. Opegrapha atra Pers. in Usteri, Ann. Bot. 7: 30. 1794. 



On bark, New Providence, at Soldiers' Home : — widely distributed. 



2. Opegrapha vulgata Ach. Meth. Lich. 20. 1803. 



On bark. New Providence : — widely distributed in temperate regions. 



3. Opegrapha varia Pers. in Usteri, Ann. Bot. 7: 30. 1794. 



On bark. New Providence : — cosmopolitan. 



4. Opegrapha calcarea Turn, in Smith, Eng. Bot. pL 1690. 1807. 



Opegrapha Chevallieri Leight. Ann. Mag. Nat. Hist. II: 13: 90. 1854. 

 On limestone. Conception Island : — Europe ; California ; Cuba. 



5. Opegrapha saxicola Ach. Syn. Lich. 71. 1814. 



On limestone. New Providence : — Europe ; California ; Cuba. 



