LICHENES— DE JEAN MULLER. 377 



circ. 55 fi alta, hyalina. Asci cylindrico-obovoidei, 8-spori. Sporae 16 /x longae, 6 jj. latse, 

 4-loculares, late dactyloidese, utrinque obtusae. 

 Juxta proximam 0. simpliciorem, Nyl. (Syn. Lich. Nov. Caledon. p. 55) inserenda est, 



Socotra. Ad corticem ramorum. B.C.S. n. 1458. 

 Distrib. Endemic. 



10. O. melanospila, Mull. Arg. Lich. Beitr. n. 56 (in Flora Eatisb. 1877). 



Socotra. In thallo parasitans Parmelice perforata, Ach., et P. urceolatce, 

 Eschw., supra Wadi Kischen, alt. 800 m. Schweinf. 

 Distrib. Near Caracas. 



3. MELASPILEA. 



Melaspilea, Nyl. Prodr. 170; Tuck. Gen. 196. 

 A small but widely dispersed genus. 



M. stigmatea, Mull. Arg. inProc. Roy. Soc. Edin. xi. (1882), 467. 



Apothecia in thallo alieno immersa, nonnisi margine tenuissimo nigro-fusco leviter emergentia, 

 orbicularia et orbiculari-elliptica, j'q-^ mm. longa, plana, nuda, fusco-nigra, opaca; 

 margo basi uudique continuus et tenuis et tenuiter sectus pallide tantum fusco-nigricans ; 

 epithecium pallide fuscuni v. indistinctum ; lamina fuscescenti-hyalina; parapbyses valde 

 tenellae, connexaa. Asci 6-8-spori. Sporse evolutae pallide fuscae, ovoideae, 12-14 /j. longae, 

 7-8 /x latae, insequaliter 3-loculares, sc. bilocularium loculus inferior paullo longior et 

 angustior mox ipse transversim divisus. 



Proxime accedere videtur ad Ilelasjrileam myriostigma, Nyl. Lich. Kurz. Javan. n. 46. 



Socotra. In thallo Dirince repandce, Fries. B.C.S. n. 1325. 

 Distrib. Endemic. 



4. GRAPHIS. 



Graphis, Mull. Arg. Lich. Beitr. n. 454 (sporse hyalinse, trausversim divisae, loculi biconvexo- 



lentiformes). 

 Gracilis, Ach. pr. p. ; Nyl. pr. p. ; Tuck. pr. p. 



A large and in warmer regions richly represented genus ; some northern 

 species are dispersed everywhere. 



Graphis and Graphina have hyaline, Phceographis and Phwographina 

 fuscous or olive-brownish spores; the first and third have the spores divided 

 transversely only, the second and fourth have them parenchymatous. 



1. G. brachycarpa, Mull. Arg. in Proc. Roy. Soc. Edin. xi. (1882), 467. 



Thallus coerulescenti-albus, tenuis, laevis et continuus, zonula nigrescente cinctus. Lirellse 

 breves, J-| v. usque 1 mm. longae, ssepius 2-3-plo longiores quam latse, emersas, rigidas, 

 TRANS. ROY. SOC. EDIN. VOL. XXXI. 3 B 



