(5) J. MULLER. LICHEMES ECKFELDTIANI. 93 



34. Medusulina texana Müll. Arg.; thallus argillaceo-v. subtestaceo-pallidus, 



cartilagineus, laevigatus; lirellse copiosa?, erumpentes et thallo ambiente 

 mox tumefacto et soredioso-efflorescente in grèges varie oblongatos 

 minute impresso-microcarpicos pulveraceos coiifluentes ; perithecinm in 

 sectione album, parum evolutum ; epithecium fulvescens; lamina aquoso- 

 hyalina; sporae in ascis solitariœ, 120-150 y- longse, 50-60 y latae, 

 locelli in séries transversales cire. 18 dispositi, in quaque série (axili) 

 cire. 6-7. — Nulli nisi Graphinœ nitidœ (Eschw.'l Müll. Arg. arcte 

 affinis et similis, sed robustior, spora? solitariae et pluries majores. — 

 Corticola, ad Brown vi lie, Texas, n. 56 A. 

 Obs. Ad hoc genus Medusulinam, quod a Sarcographa Fée recedit sporis 

 hyalinis, insuper referendae sunt : M. egenella, s. Graphina egenella 

 Müll. Arg. L. Bellend., n. 49; M. albosporella, s. Graphis albosporella 

 Nyl. in Flora 1869, p. 124; M. sphœrosporella, s. Graphis sphœrospo- 

 rella Nyl. in Flora 1869, p. 124. 



35. Mycoporum pycnocarpum Nyl. in Flora 1858, p. 381; corticola, in 



Mexico, prope Monterey : n. 92. 



36. Endopyrenium Tuckermanni Müll. Arg. Pyrenoc. Gubens., p. 377; ad 



cortices muscosos prope Monterey, Mexico : n. 85. 



37. Porina africana Müll. Arg. Lieh. Afr. occid., n. 47; corticola, in Mexico 



prope Monterey : n. 157. 



38. Microtheiia modesta Müll. Arg. ; thallus obscure olivaceo-cinereus, 



maculiformi-tenuis, laevis, fere indistinctus ; apothecia tota cire. 

 35 /ioo mm. lata, nigra, pyramidali-convexa, basi ob perithecium extror- 

 sum anguloso-productum auguste nigro-cincta, apice minute umbilicata, 

 nuda et nitidula; perithecium dimidiatum ; sporae 8-na3, cire. 17 y 

 longa? et, 7 y latœ, cuneato-obovoideaa , 2-loculares, loculus inferior 

 angustior et saepius paullo brevior. — Apothecia ob thalluin obscurum 

 primo intuitu minus quam in affinibus perspicua, depressula et hinc 

 inde fere ut in M. thelena (Ach.) Müll. Arg. nigro-cincta. Juxta M. in- 

 tercedentem Müll. Arg. locanda est. — Corticola, in Mexici prov. 

 Jalisco : Dr Eckfeldt, n. 182. 



39. Pyremila nitidella Müll. Arg. Pyrenoc. Cubens., p. 414; corticola, in 



Mexico prope Monterey : n. 175. 



40. Pyrenula pinguis Fée Ess., p. 75; Müll. Arg. Pyrenoc. Féean., p. 33; 



corticola, in Mexico ad Monterey : n. 176, 208. 



