35 - A. leiicoschisma, Miill. Arg. Thallus white, thin, smooth. 
Apoth. lirellate, rimose, mealy-white, very slender, bordered by the 
connivent lips ot the thallus, fissurinaeform, within pale. Spoies ob¬ 
long-ovoid, (6)-8 locular, the intermediate cells larger.— Beitr., n. 
1489. —Cochin China. 
36. A. vermins, Willey. Thallus whitish-green, powdery, de¬ 
terminate. Apoth. pale, innate, angular, dilated, plane. Spores 
oblong, 10-16 locular, .040-44 by .010-15 mm.— Suftftl ., ft. 53 - 
Florida, Miss Wilson. 1 have seen only a single small specimen. 
37. A. conturbata, Nyl. Thallus thin, white, determinate, 
limited by a black line. Apoth. pale, slender, intricate-elongated, 
uneven. Spores oblong, 8-12 locular, .035-48 by .012-17 mm. 
Reaction blue.— Pr. N. Gr., ft. 98.—Tampico, Mexico. 
38. A. albovirens, Nyl. Thallus thin, green, limited, by a black 
line. Apoth. white, somewhat convex, adnate, difform. Spores 
fusiform-oblong, 10-16 locular, .070-80 by .037-32 mm. Reaction 
of the hymenium blue, of the tliekes vinous red.— Syn. A". Ceiled, 
ft. 64.—New Caledonia. 
39. A. umlenaria, Nyl. Thallus thin, white, determinate. 
Apoth. of the same color, rounded or somewhat difform. slightly 
convex, verrucaeform. Spores fusiform-oblong, 12 locular, .158-200 
by .049-61 mm. Reaction of the hymenium blue, of the spores pale 
rose-color.— Pr. N. Gr., ft. 102.—New Grenada. Spores figured in 
Edit. 1, t. 2 f. 50. 
40. A. Hampeami, Miill. Arg. Thallus thin, olive-green, bor¬ 
dered by a black line, smooth or obsoletely granulose, now evanes¬ 
cent. Apoth. white, depressed hemispherical, elliptical or suban- 
gulose, plano-convex, margined by the thallus. Spores elongate- 
ellipsoid, about 16 locular, .055-70 by .018-23 mm. Phlyctidia 
Beitr., n. 220, dein Arthonia ibid., n. 280.—S. America. 
To this section also belong Wright. Cub., 47, 218, 761, 762, 763, 
not yet described ; perhaps two species. 
ft Apoth. crimson, or violet-brown, or purple. 
41. A. pyrrliula, Nyl. Thallus thin, white, determinate. Ap¬ 
oth. crimson, linear, subsimple or sparingly branched, often angu- 
late-fiexuous, innate, plane. Spores oblong, 6-8 locular, .030-36 by 
.015 mm. Reaction from blue vinous red.— En. ft. 337 (nomen) , 
Elora 1885,/. 447, (1 descr .), non Tuck. Gen., ft. 220. Said in the 
place cited to be from N. Carolina in lib. Tuck., but the plant here 
described was not among his Arthonias when I examined them. 
The plant to which Tuck, gave the name in litt., is A. ftyrrhuliza 
