Knight. — On the Lichenographia of New Zealand. 355 



26. Ascidium manosporum, n. sp. 



Thallus albus v. sordide albus effusus tenuis, verrucis apotlieciorum 

 convexis concoloribus v. pallido-fuscis, ostiola minutissima prominula. 

 Apothecia excipulo proprio globoso iutegro tenui fusco instructa, hymenio 

 tandem atro-fusco (in lamina subtilissima fusco) ; paraphysibus capillaribus 

 bene distinctis. Sporae in ascis monosporis fusiformes v. elongato-cylin- 

 draceas tandem fuscse murali-di visas — seriebus loculorum transversis 20-30 

 in quavis serie 2-8 loculis in medio et 3-1 versus apicem utruruque, longit. 

 0-1 ad 0-13 mm., crassit 0*02 ad 0-03 mm. 



Ad cortices. 



Obs. — Var. a. Excipulum et hymenium pallida. 



27. Verrucaria (Leptorhaphis) macrocyrtospora, n. sp. 



Thallus obscurus macula pallido-flavescente indicatus (vix matricem 

 colorans) v. nullus, verruculis apotlieciorum minutis (basi latit. circa 0-8 

 mm.) convexis. Apothecia orbicularia primitus immersa, excipulo proprio 

 atro integro mox supra denudato — turn margine thallode tumidulo — hymenio 

 dilute fusco, paraphysibus capillaribus perplexis. Sporso in ascis cylin- 

 draceis (long. 1*3 mm.) aciculares utrimque acutatas hyalinse in arcum 

 constanter plus minus curvatas 13-septata3 v. ultra, longit. 0*11, crass. 

 0-003 mm. 



Ad arborum cortices. 



Obs. — Verr. beloniza, Stirt. Sporae rectae, septa non visa. 

 28. Verrucaria submargacea, n. sp. 



Thallus olivaceo-fuliginosus tenuissimus contiguus laavigatus determi- 

 natus, gonidiis veris ubique confertis. Apothecia nigra minuta (diam. 0*3 

 mm.) hemisphserica protuberantia a thallo leviter obtecta, excipulo dimi- 

 diato atro apice poro minutissimo instructo, paraphysibus nullis. Sporae in 

 ascis clavatis simplices dacryoideas incolores, longit. 0-023, crassit. 0*01 mm. 



Ad sacca. 



Obs. — Persimilis V. athiobolm prsecipue sporis dacryoideis sed differens 

 sporis majoribus. 



29. Verrucaria (Polyblastia) trachyspora, n. sp. 



Thallus fuscus tenuissimus continuus. Apothecia liemisphasrica minuta 

 dimidiata atra ad basim immersa, ostiolo depresso minutissimo madefacto 

 prominente ambitu albescente, paraphysibus distinctis ramosis. Sporaa in 

 ascis claviformibus nonnullis cylindraceis ovatas murali- v. ruderiformi- 

 divisas, cellulis subpaucis irregularibus, hyalinas incolores interdum luteolas, 

 longit. 0-018, crassit. 0-01 mm. 



Ad lapides. 



Obs. — P. tichospora, Knight (Trans. Linn. Soc, vol. ii, p. 37). Thallus 

 cinerascens, sporse minores, 



