Ceratodon conicus PI. XI, figs. 1-3, p. 54 



" purpureus PI. X, figs. 1-8, p. 54 



Chimney Pond, Mt. Ktaadn Fig. i, p. 42 



Cololejeunea suhcristata PI. II, figs. 5-14, p. 27 



Ditrichum amhiguum PI. XVII, figs. 1-8, p. 58 



" flexicaule PI. XIV, figs. 1-7, p. 57 



" giganteum PI. Xtl, figs. 1-5, p. 55 



" heteromallum PI. XVI, figs. 1-4, p. 58 



" montanum PI. XV, figs. 1-5, p. 57 



pusillum PI. XVIII, figs. 1-8, p. 59 



" Schimperi PI. XIII, figs. 1-7, p. 56 



Fossomhronia lamellata PI. II, figs. 1-4, p. 27 



Parmeliopsis aleurites PI. XX, fig. 2 



" " var. diffusa PI. XX, fig. 3 



" amhigua PI. XX, fig. 4 



diffusa PI. XX, fig. 5 



" placorodia PI. XX, fig. i 



Pleuridium alternifoliuni. PI. V, figs. 1-4, p. 51 



" Bolanderi PI. IV, figs. 1-8, p. 50 



Pomola and Chimney Pond, Mt. Ktaadn Fig. 2, p. 44 



Rhacomitrium aciculare PI. XXII, figs. 1-6, p. 96 



Nevii PI. XXIII, figs. 1-6, p. 97 



" depressum PI. XXIV, figs, i-io, p. 97 



" patens PI. XXI, figs, i-io, p. 94 



Riccia McCallisteri PI. Ill, fig. 2 



" violacea PI. Ill, fig. i 



Saelania glaucescens PI. XIX, figs. 1-7, p. 59 



Sterigmata and spermatia of Parmeliopsis Fig. i, p. 70 



Sterigmata and spermatia of Parmelia. Fig. 2, p. 70 



Swartzia montana PI. VI, figs 1-8, p. 51 



" inclinata PI. VII, figs. 1-2, p. 52 



Trichodon borealis PI. IX, figs. 1-3, p. 53 



" tenuifolius PI. VIII, figs. 1-7, p. 53 



Whatcomb County, Washington, Sketch map Fig. i, p. 77 



ERRATA 



Page 94, read PLATE XXI. 

 Page 96, read PLATE XXIL 



Page 97, for PLATE XXII read PLATE XXIII and for XXIII read XXIV. 



