LICHENES IN INSULA TRINIDAD. 147 



Apothecia sat crebra, verrucas formantia mammaeformes, 0.7-0.4 

 mm. latas, demum basi praeruptas aut le\issime constrictas, amphi- 

 thecio thallino, thallo concolore, laevigata aut leviter verruculoso 

 obducta, margine ostiolari nigro, maculam aut verruculam leviter 

 prominentem, 0.2-0.15 mm. latam formante. Perithecium apiee 

 fuscescens, ceterum pallidum. Sporae fusiformes, apicibus acutis, 

 decoloratae, septis transversis 3-7 divisae, loculis sat aequalibus, 

 long. 0.032-0.036, crass. 0.005-0.000 mm., membrana haud gelatinosa. 



Proxime affinis P. isidiophorae Vain. (Addit. Lich. Antill. p. 203) et 

 P. mastoideae (Ach.) Vain. (Etud. Lich. Bres. II, p. 222). 



Ad corticem arboris. Maraval Valley (No. 29). 



62. Porina epiphylla Fee var. praestans (Nyl.) Vain. (Lich. Ins. 

 Philipp. Ill, p. 305). 



Supra folia coriacea arborum. Maraval Valley (Nos. 22-23). 



63. Arthropyrenia (Anisomeridium) infernalis (Mont.) Mull. 

 Arg. (Lich. Beitr. in Fl. 1884, No. 879) var. rhynchostoma Vain, 

 (var. n.). Margine ostiolari demum bene excrescente denudatoque 

 a forma typica hujus speciei differens. Thallus modice incrassatus, 

 cinereo-glaucescens. Perithecium fuligineum, integrum. Paraphyses 

 ramoso-connexae. Asci clavati, long. circ. 0.200, crass. 0.040 mm. 

 Sporae 8:nae, distichae, decoloratae, ovoideae, 1-septatae, cellula 

 inferiore multo breviore, long. 0.039-0.050, crass. 0.018-0.020 mm. 



Ad corticem arboris. Sangre Grande (No. 73). 



64. Didymosphaeria megalospora Vain. (sp. n.). Apothecia 

 vulgo dispersa, verrucas depresso-hemisphaericas demum formantia. 

 Perithecium hemisphaericum, integre fuligineum, lat. circ. 0.6-0.8 

 mm., basi saepe anguste membranaceo-dilatato. Paraphyses crass, 

 circ. 0.0007 mm., ramoso-connexae. Sporae binae, dilute fumoso 

 nigricantes, oblongae aut ovoideae, rectae aut leviter curvatae, api- 

 cibus obtusis aut rotundatis, 1-septatae, medio saepe constrictae, 

 long. 0.058-0.066, crass. 0.020-0.026 mm., membrana leviter incras- 

 sata. 



Ad fungos pertinat, gonidiis destituta, sed passim parce Trentepohl- 

 iae in cellulis substrati observantur. 



Ad corticem laevigatum arboris. St. Ann's Valley (Nos. 99 and 68). 



