278 PROCEEDINGS OP THE AMERICAN ACADEMY 



loso albido hypothallo tenui fuscescente ; apoth. mecliocribus sessilibus 

 lecanoroideis margine obtusiusculo mox demisso albido discum sub- 

 planum nigro-fuscum hypothecio concolore impositum cingente : sp. 

 in th. elongato-clavatis octonis mediocribus incoloribus e dactyloideo 

 fusiformibus 4-6- plerumque 6-blastis, diam. 3-5° saepius 5° longiori- 

 bus), wbich, with a thallus not unlike that of L. thysanota, a feature sep- 

 arating it from L. hyssomorpha, Nyl., combines apothecia differing from 

 those of both, and spores of almost twice the dimensions, and may, not 

 inappropriately (with reference to the small size of the fruit in most 

 of the species of this group), be called L. majorina. 



Lecidea (Bilimbia) leucocheila, sp. nov. : thallo tenui carti- 

 lagineo mox contiguo inaequabili cinerascente ; apotheciis mediocribus 

 adnatis, disco plano-convexo fusco-nigro hypothecio fusco imposito 

 margine integerrimo albido-livescente, demum proliferis. Sp. in thecis 

 clavatis octonse, parva;, incolores, dactyloidesB vel subfusiformes, tetra- 

 blastfc, diam. 2^ - 3° longiores. Paraphyses distinctse filiformes. On 

 dead wood in the island of Cuba, Mr. Wright (Lich. Cub. n. 208). 

 Comparable with L. triseptata, Hepp, but quite distinct from that 

 species. The apothecia are a little smaller than those of L. majorina, 

 and differ very considerably otherwise, but there is some observable 

 resemblance in the colors. 



Lecidea (Bacidia) microphtllina, sp. nov.; thallo squamuloso- 

 microphyUo viridi-cinerascente (fuscescente aut dealbato) squamulis 

 cartilagineo-membranaceis imbricatis crenato-incisis laciniatisve hypo- 

 thallo tenui disparente ; apotheciis plano-convexis e luteolo-pallido 

 rufescentibus (rubelhs aut denigratis) margine obtuso tenuescente dein 

 evanido, demum flexuoso-lobatis proliferisque. Sp. in thecis clavatis 

 octonae, incolores, aciculares, graciles, diam. 15 - 30° longioi'es. On 

 trunks in the island of Cuba, Mr. Wright. 



a. Squamulee magis appresste crenatse sporis longioribus. (Wright. 

 Lich. Cub. n. 211.) L. microphyllina, Nyl. 1. c. 



h. Squamul« adscendentes laciniatse sporis brevioribus. (Wright. 

 Lich. Cub. n. 212.) L. tryptophyllina, Nyl. 1. c. 



c. Squamulse laciniatfe mox dealbatge dein deliquescentes sorediatae 

 sporis diminutis. (Wright. Lich. Cub. n. 213.) L. leucophyllina, 

 Nyl. 1. c. 



Var. ^ suhgranulosa : thallo diminuto granulls squamaceis in crus- 

 tara imcquabilera demum conglobatis. (Wright. Lich. Cub. n. 214- 

 218.) L. cognata, & L. pertexta, Nyl. 1. c. 



