20. Arthonia lecideella Nyl. On dead branches and trunks of Salix nigra 
and Ulmus americana, N. Beaver creek at Vaughns, March 6, and April 
7, 1914; determined by Mr. Merrill. 
21. Arlhonia quintaria Nyl. Shushan on bark of Juglans cinerea, Aug. 9, 
1906; determined by Mr. Merrill; also on bark of Quercus, May 14, 
1906 (Dobbin); reported in N. Y. State Mus. Bull. 167: 23. 19 13. 
22. Arthonia radiala (Pers.) Ach. On bark of Carya ovata and Tilia americana^ 
Shushan, Aug, 9, 1806; determined by Mr. Merrill; also bark of Fagus 
grandifolia, Shushan, Apr. 3 & 9, 1906 (Dobbin). Reported in N. Y. 
State Mus. Bull. 167: 23. 1913. (Arthonia astroidea Ach.) 
2^. Arthothelium spectabile (Plot.) Mass. On living trunks of Acer saccharum 
Apr. 16, 19 14, and Tilia americana June 3, 1906, at Vaughns; deter- 
mined by Dr. Fink and by Mr. Merrill. Bog north of Clarks Pond, 
west of Shushan on Ttlia, Apr. 16, 1914. {Arthonia speclabtle Flot.). 
24. Opegrapha varia Pers. Trees at Fort Edward (Howe) N. Y. State Cab. 
Rep. 22: 68. 1869. Bark of Ulmus americana, N. Beaver creek at 
Vaughns, Sept. 11, 1913; determined by Dr. Fink, Trunks of Tilia 
americana, Anaquassacook hills. May 19, 1906. 
25. Opegrapha varia notha (Ach.) Fr. Warrensburg on bark of Acer ruhrum 
(Peck); trunks of Acer ruhrum, bog north of Clarks Pond, Sept. 11, 
1909. 
26. Graphis scripta (L.) Ach. Trunks of trees specially of the frondose spe- 
cies; common. 
27. Graphis scripta pulverulenta (Pers.) Ach. West of Tripoli on Juglans cine- 
rea, Dec. 5, 1914; determined by Mr. Merrill. 
28. Graphis scripta recta (Humb.) Nyl. Huletts Lg. (Jelliffe), 
29. Graphis scripta stellala (Leight.) Mudd. On bark of Neinopanthus muc- 
ronata, wet place in woods south of Sugar Loaf Mt., Nov. 19, 1915; 
determined by Mr. Merrill. 
30. Conotrema urceolatum (Ach.) Tuck. Huletts Lg. (Jelliffe); E. Galway 
on birch trunks (Burt) ; Shushan on Betula lutea. May 4, 1907 (Dobbin) ; 
Anaquassacook hills on Carya ovata. May 19, 1906. 
31. Diploschistes scruposus {lAnn.) ^orm. Shushan on slaty rocks (Dobbin) ; 
northwest Hartford; common at Vaughns on sandstone rocks, which 
it softens. It sometimes grows over mosses in rocky places. {Urce- 
olaria scruposa (Linn.) Ach.) 
32. Microphiale diluta (Pers.) Zahlbr. East of Tripoli, at base of tree in 
swampy woods, Apr. 10, 19 14; determined by Mr. Merrill. Copse 
in wet place, near Devines woods at Vaughns, Apr. 18, 19 14. {Gya- 
lecta Pineti (Schrad.) Tuck.). 
33. Microphiale lutea (Dicks.) Stein. Peaked Mt., May 26, 191 7: falls in 
West brook on old humus and rotten logs, Sept. 11, 1918; and east of 
Thompsons gravel-bed on bark of Thuja occidentahs, Apr. 29, 19 17, 
southern W, Fort Ann; determined by Mr. Merrill. 
