.003-4 mm. Reaction purplish-red.— Flora 1876,/. 575. A. exilis 
var. Wain l. c., />. 163. A. vagans v. apatetica Almq ., p. 52. Exs. 
Norrl. n. 229, Lojka Univ., n. 242.—Europe. 
161. A. melaspermella, Nyl. Thallus white, effuse or obsolete. 
Apoth. black or brownish-black, rounded, lecideiform, small, plane, 
with a subcrenulate at length evanescent margin. Spores oblong- 
ovoid, 2 locular, brown, .0003-45 by .00012-14 inch. Reaction blue. 
— Flora 1865, p. 605, Leight Gr. Brit., p. 392, Lindsay Jour. Linn. 
Soc ., 1866, p. 268 and t. 6. The note of Nyl. on the species in the 
Journal for the same year, p. 341, I have not seen.—England. 
162. A. microsperina, Nyl. Thallus pale green. Apoth. round¬ 
ed, plano-convex, rugose, within dark. Spores solaeform, 2 locular, 
.009-11 by .003-4 mm.— E11., p 133 (nomen.) Mull. Arg. Beitr., 
n. 1092. Lecidea complanata Fee Ess., p. 112, Suppl., p. 103, pde 
Mull. Arg. Graph. Fee. p. 57.—Tropical. 
163. A. microspermoides, Nyl. Thallus thin, white, indeter¬ 
minate. Apoth. rounded or rounded-oblong, plane, within dark. 
Spores ovoid, 2-3 locular, .009-10 by .003-4 mm. Reaction when 
present blue.— Pr. N. Gr., p. 107.—Java. 
164. A. convexella, Nyl. Thallus thin, ashy-green or evanes¬ 
cent. Apoth. rounded, spherical, minute, convex, rugulose. Spores 
oblong-ovoid, 2 locular, brown or decolorate, .012-15 by .004 mm. 
Reaction vinous red.— Pr. Gall., p. 169. Lamy, n. 565. A. va¬ 
gans var. 11. Almq., p. 54.—On dead wood, France. 
165. A. epimela, Norm. Thallus at length thick, dark. Apoth. 
minute, orbicular, convex, scabrous. Spores ovoid or oblong, 2 
locular, .009-13 by .0035-45 mm. Spermatia .004-5 mm. long.— 
Bot. Not. 1872 , p. 34, (nomen.,) Almq., p. 56.—Scandinavia. 
166. A. rugulosa, (Kph.) Almq. Thallus thin, scaly, dark. 
Apoth. minute, shining, paler when wet, the hypothecium black. 
Spores 2 locular, .012-15 by .006-7 mm. : figured in Hepp., n. 472, 
4 71 fide Almq. Reaction from blue vinous red.— Coniangium Kph. 
in litt., Kbr. Pg. p. 271, Almq., p. 55.—Germany. 
167. A. horaria, Norm. Thallus inconspicuous or at length 
efflorescent, dark. Apoth. adnate, rounded or a little difform, plane 
or convex, rugulose. Spores ellipsoid or oblong, 2 locular, con¬ 
stricted, .012-18 mm. long. Reaction purplish, as also of the hy- 
phae.— Norveg. 1884, /. 33.—Norway. 
168. A. exilis, (Elk.) Thallus inconspicuous or obsolete. 
Apoth. very minute, subglobose. Spores solaeform, .006-9 bv 
.003-4 mm — Lecidea synothea v. exilis Flk. D. L., n. 187. L. ex¬ 
ilis Nyl. Pr. Gall., p. 187. Arthonia Anz. Bond., p. 94. Wain. 
