228 GRAPHIDBI [mELASPILEA 



Mag. Nat. Hist. ser. 3, xx. p. 256 (1867) & Lich. Fl. p. 404; 

 ed. 3, p. 436 ; Cromb. Lich. Brit. p. 105. 



Distinguished by the rather large apothecia, the almost colourless 

 spores and the almost entire absence of paraphyses. The apothecia 

 are scattered or sometimes several congregate and are often circum- 

 cissed. 



Hah. On the branches of old trees chiefly oak. — Distr. Very local 

 in S.W. Ireland. — B. M. Tore Mt., Dinish, Muckruss, Cromaglown 

 and near Derrycurrihy, Killarney, Kerry. 



6. M. constrictella A. L. Sm. — Thallus whitish, thin. Apo- 

 thecia black, simple, sometimes aggregate, internally pallid- 

 brown ; perithecium lateral ; disc broad, concave or flattened ; 

 paraphyses crowded, irregular, not well distinct, brown at the 

 apices ; hypothecium colourless ; spores obovate, colourless, 

 1-septate, constricted, 0,012-17 mm. long, 0,0045-65 mm. thick ; 

 hymenial gelatine untinged with iodine. — Opegrapha constrictella 

 Stirton in Scott. Nat. iv. p. 29 (1877) ; Leight. Lich. Fl. ed. 3, 

 p. 396. Specimen not seen. 



Bab. On old bark at Ben Brecht, Argyll. 



7. M. proximella Nyl. ex Norrl. in Not. Sallsk. Faun. & FL 

 Fenn. forh. xiii.p. 342 (1873). — Thallus effuse, whitish, developed 

 under the bark or evanescent. Apothecia small, black, roundish, 

 obtusely margined ; disc plane, somewhat wrinkled ; hypothecium 

 colourless or sordid ; spores ovoid, becoming brown, 1-septate, 

 0,017-19 mm. long, 0,007-8 mm. thick; hymenial gelatine 

 brownish and then wine-red with iodine. — Lecidea proximella 

 Nyl. in Herb. Mus. Fenn. p. 90 (1859) nomen. Arthonia proxi- 

 mella Nyl. Lich. Scand. p. 262 (1861) ; Leight. in GreviUea i. 

 p. 60, t. 4, f. 3 & Lich. Fl. ed. 3, p. 417. 



Somewhat resembling Arthonia patellulata but differing in the 

 character of the spores. 



Hah. On trunks of trees, chiefly oak and holly in wooded upland 

 districts. — Distr. Only a few localities in S. and W. England, but 

 no doubt to be detected elsewhere. — B. M. Near Stoney Cross, 

 New Forest, Hants; Ardingly Woods, Sussex; near Canterbui-y, 

 Kent ; Braydon Forest, Wilts ; Sapperton, Gloucestershire ; Dolgelly, 

 Merioneth ; near Acton Scott, Shropshire ; Gwydir Woods, Bettws-y- 

 Coed and Mael-y-Gest, Carnarvonshire. 



8. M. Interjecta A. L. Sm.— Thallus whitish or faintly 

 greenish, tartareous, thin, furfuraceous, almost evanescent. Apo- 

 thecia black, elongate, somewhat shining, simple or sometimes 

 branched, solitary or clustered ; disc narrow, slit-like, the margins 

 tumid, inflexed ; hypothecium black ; spores colourless, oblong, 

 1-septate, 0,021-23 mm. long, 0,009 mm. thick. —LithograpJia 

 interjecta Leight. Lich. Fl. p. 361 (1871) ; ed. 3, p. 394. Specimen 

 not seen. 



