GYALECTACEAE. 541 



Family 3. COENOGONIACEAE. 



1. COENOGONIUM Ehrenb. 



1. Coenogonium interplexum Nyl. Ann. Sci. Nat. IV: 16: 92. 1862. 



On trees, Abaco, vicinity of Cherokee Sound, and Andros, at Louisa Coppice, 

 near Nicholl's Town : Costa Rica ; Colombia ; Venezuela. 



Family 4. PILOCARPACEAE. 



1. PILOCAKPON Wainio. 

 1. Pilocarpon tricholoma (Mont.) Wainio, Lich. Bres. 2: 89. 1890. 



Biatora tricJioloma Mont. Ann. Sci. Nat. Ill: 16: 53. 1851. 

 Lecidea leucoUepliara Nyl. Ann. Sci. Nat. IV: 19: 337. 1863. 



On leaves of Eugenia, Crooked Island, at Stopper Hill : widely distributed in 

 tropical America. 



Family 5. LECANACTIDACEAE. 



1. LECANACTIS Esehw. 



1. Lecanactis denticulata Wainio, Ann. Acad. Sei. Fenn. A: 6 7 : 141. 1915. 

 Opegrapha acicularis Kiddle, Mem. Brooklyn Bot. Gard. 1: 110. 1918. ' 



On bark of Coccolobis laurifolia, Great Harbor Cay, Berry Islands, and on 

 Eugenia buxifolia, Watling's Island : Florida ; Cuba ; St. Thomas ; St. Croix ; Porto 

 Rico. 



It has only recently been possible for me to see a copy of Wainip's paper. His 

 description of L. denticulata differs from that of O. acicularis only in stating that 

 the base of the amphithecium is black, while I found it to be colorless in the mate- 

 rial that I examined : but the denticulate margin of the apothecia is so peculiar and 

 so characteristic that I am convinced that the plants are the same. Furthermore, 

 the acicular spores are identical, and Wainio has proposed a new section Bacidiactis 

 to receive this species. 



Family 6. GYALECTACEAE. 



Spores one-celled. 1. lonaspis. 



Spores two-celled. 2. Microphiale. 



1. lONA'SPIS Th. Fr. 



1. lonaspis tropica Eiddle, sp. nov. 



Thallus crustaceus effusus tenuissimus cum saxo conferruminatus, fusces- 

 cens, minutissime farinosus, circa apothecia rimuloso-areolatus. Gonidia pauca 

 chroolepoidea. Apothecia caespitosa minuta, in areolis thallinis immersa, disco 

 primum punctiforme dein aperto ad 0.3 mm. lato, concavo aut piano, castaneo 

 aut fuscescente, margine pallidiore integro tenue parnm prominente persistente; 

 epithecio fulvo, excipulo et hypothecio pallido. Asci clavati S-spori. Sporae 

 incolores simplices ellipsoideae membrano tenue, 10-12 X 6 7/*. 



On limestone, New Providence (Brace, November 2.0, 1918, 9607, type). 

 This species has the general appearance of lonaspis suaveolens (Ach.) Arnold, 

 but differs in the brown thallus and disk of the apothecium. 



2. MICEOPHIALE Stizenb. 



1. Microphiale lutea (Dicks.) Steiner, Sitzungsber. kais. Akad. Wiss. Wien 

 106: 227. 1897. 



Lichen luteus Dicks. PI. Crypt. Brit. 1: 11. 1785. 

 Gyalecta lutea Tuck. Gen. Lich. 136. 1872. 

 On bark, New Providence : widely distributed. 



