294 LICHENES ANTILLARUM A W. R. ELLIOTT COLLECTI. 



una cum Lecidea vanabili, cet. Habitu subsimilis est T. hmsiliensi 

 Nyl. Gonidia hymenialia nulla. Gonidia thalli protococcoidea, 

 simplicia. 



5. T. (subg. EuTHELENELLA sect. Microgl^na) geminella (Nyl.) 

 Wain. Verrucana Nyl. Exp. Pyrenoc. 40; Fl. 1858,381. Fubj- 

 hlastia Miill. Arg. Lich. Beitr. n. 47 {(/eiiwlla), 490. Ad corticem 

 avboris in Chateau Belair in St. Vincent (n. 446). Perithecium 

 integrum, fuligineum, depressum. Paraphyses ramoso-connexae. 

 Nucleus iodo non reagens. Spora) decolores, 2na?, halone indutaj, 

 murales, long. 0-036-0-040, crass. OlG-0-020 millim. 



8. Porina. 



1. P. dominicana, sp. n, Tliallus crassitudine mediocris aut 

 sat crassus, areolatus vel rimoso-areolatus, areolis contiguis, angu- 

 losis difformibusque, circ. 1-5-0-5 millim. latis, b^vigatis, nitidi- 

 usculis, argillaceo-pallidis, hypothallo indistincto. Apotbecia thallo 

 immersa, macula parva nigricante indicata aut verruculas parvulas, 

 parum elevatas, tballo obductas, interdum formantia. Perithecium 

 albidum, apice nigricans. Nucleus iodo non reagens. Paraphyses 

 simplices aut pr. p. parce ramoso-connex;e. Asci clavati. Spone 

 8nii3, decolores, fusiformes, apice superiore obtuso, apice iuferiore 

 caudato-attenuato, long. 0-035-0-038, crass. 0-005-0007 millim., 

 8-9-septata% loculis cylindricis. Stratum corticale thalli et amphi- 

 thecium iodo vinose rubens. In rupe ad Bath Estate in Dominica, 

 una cum Placodlo diplacioide et Lecanora prosecha. Cum P. Ton- 

 dudana Miill. Arg. Lich. Costar. ii. 167, P. pdochroa Miill. Arg. 

 Lich. Beitr. 647, et P. mllosa (Krempelh.) Fl. 1876, 526, com- 

 paribus, at ab iis bene differens. Ad sect. lSe(jestriam (Fr.) 

 Wain, li^tud. Bres. ii. 220, pertinet. 



2. P. MASToiDEA (Ach.) Mass. ; Wain. EUid. Bres. ii. 221, Ad 

 corticem arborum in Morne Couronne in Dominica (n. 164) et ad 

 Chateau Belair in St. Vincent. 



8. P. PH.^.A (Ach.) Miill. Arg. Lich. Beitr. n. 872. Vemicaria 

 Ach. Syn. Lich. 88 (secund. herb. Ach.) ; Nyl. Lich. Exot. 233 ; 

 Hue, Lich. Exot. 296. Thallus tenuis, sat lipvigatus, nitidiusculus, 

 glaucescens aut olivaceo-giaucescens, hypothallo indistincto. Apo- 

 tbecia conceptaculis pycnoconidiorum crebris immixta, verrucas 

 hemisphasricas vel conoideas, 0'2-0-25 millim. latas, ciuereo-nigri- 

 cantes, opacas, basin versus amphithecio thallino obductas, parte 

 superiore majore minoreve amphithecio evanescente obvelatas, 

 formantia. Perithecium elevato-hemisphiericum, fuligineum, in- 

 tegrum, at basi tenue et dilutius coloratum. Paraphyses simplices. 

 Asci cylindrici. Spor^e 8noB, monostich;e, decolores, ovoideo-fusi- 

 formes, l-septatcie, medio baud constrictie, halone nullo indutae, 

 long. 0-008-0-009, crass. 0-002-0-0025 millim. Pycnoconidia long. 

 0007, crassit. 0-0015, oblonga, \\\\go 3 guttulas oleosas continentia. 

 Conceptacula circ. 0-110 millim. lata, hemisphi^rica, fuliginea, 

 Integra. Ad corticem arboris in Kingstown in St. Vincent. Etiam 

 in specimine originali in herb. Ach. apotbecia conceptaculis pycno- 

 conidiorum immixta sunt. 



