LICHENES IN INSULA TRINIDAD. 145 



Facie externa Porinis similis. 



Ad corticem arboris. La Seiva Valley (No. 65). 



52. PSEUDOPYRENULA (TRYPETHELIUM) ANNULARIS (Fee) Milll. 



Arg. (Vain. Addit. Lich. Antill. p. 196). 



Ad corticem arborum. Aripo Savanna, Cumuto, (Nos. 6 and 90). 



53. Pseudopyrenula (Bathelium) tropica (Ach.) Mull. Arg. 

 (Vain. Etud. Lich. Bres. II, p. 210). 



Ad corticem arboris. Maraval Valley (No. 27). 



54. Pseudopyrenula (Polymeria) calospora Mull. Arg. (Pyr. 

 Cub. p. 409) var. rhodocheila Vain. (var. n.). Thallus sat crassus, 

 glaucescens, leviter inaequalis. Apothecia immersa, margine ostiolari 

 saepe annulum 0.2 mm. latum, baud aut leviter prominentem, roseum 

 formante. Perithecium fuligineum. Paraphyses ramoso-connexae. 

 Sporae decoloratae, elongatae, septis transversis 14-18 divisae, apices 

 versus loculis diminutis, long. 0.090-0.160, crass. 0.018-0.024 mm. 



Ad corticem arboris. La Seiva Valley (No. 63). 



55. Pyrenula (Melanotheca) aggregata Fee (Mull. Arg. Pyr. 

 Feean. p. 18). 



Ad corticem arboris. Maraval Valley (No. 26). 



56. Pyrenula (Eupyrenula) Maravalensis Vain. (sp. n.). 

 Thallus hypophloeodes, macula olivaceo-pallida indicatus, hypo- 

 thallo nigricante limitatus. Apothecia sat dispersa, verrucas for- 

 mantia subconoideo- aut hemisphaerico-depressas, 0.6-0.5 mm. latas, 

 nigras, nudas, leviter nitidas. Perithecium subhemisphaericum dimi- 

 diatim fuligineum, latere extus acutato, haud membranaceo dilatato. 

 Sporae 8:nae, monostichae, fuscescentes, subfusiformes, apicibus 

 obtusis, 3-septatis, loculis apicalibus valde minutis, long. 0.021-0.025, 

 crass. 0.010 mm. 



Ad corticem ramorum arboris. Maraval Valley (No. 20). 



57. Pyrenula novemseptata Vain. (sp. n.). Thallus epiphloeo- 

 des, sat tenuis, sat laevigatus, substramineo-glaucescens, leviter niti- 

 dus, KOH subfulvescens deindeque rubescens, hypothallo nigricante 

 partim limitatus. Apothecia sat crebra, 1-0.7 mm. lata, verrucas 

 formantia conoideo-hemisphaericas, nudas, parum nitidas, margine 

 ostiolari leviter conoideo-prominente. Perithecium conoideo-hemi- 

 sphaericum, fusco-fuligineum, basi tenue. Sporae fuscescentes, fusi- 



