ADDITIONS AND CORRECTIONS. 
Page 340, 1. 6 from bottom. For Frattinickia read Trat- 
tinickia. 
P. 371, 1. 4 from bottom. For gigartinus pistillatus read 
gigartina pistillata. 
P. 372, 1. 10. For gigartinus read gigartina. 
P. 373. The varieties of gigartina cornea, /3, y, e, vj, 
and i , to be made feminine by changing the final us into a* 
as filicinus into filicina, &c. 
P. 394. For flagellaria lubricalis read fureellaria lubricalis* 
P. 412. 4. Isidium micro sticticum. Small-footed isis-lichen. 
Crust cracked, tartarlike, rather smooth, nearly even, 
brownish cream-colour; edges thin; podetia scattered, short, 
hemispherical, not branched, same colour as the crust; 
apothecia brownish. 
Lichen microsticticus, Engl. But. 2243. 
On rocks. 
P. 429, 1. 12 from bottom. For lichenoides lichen facie 
read lichenoides lichenis facie. 
P. 447. 4. # Placodium elegans. Elegant placodium . 
Crust rather tiledlike, plaited, wrinkled, orange-yellow; 
surface not mealy; lobes linear, jagged, waved, convex* 
rather distant, radiating; apothecia slightly concave, nearly 
the same colour as the crust; thalloid border slightly waved, 
not in the least cut. 
Lecanora elegans a. Achar. Lich. 435. 
Parmelia elegans, Achar. Meth. 195. 
Lichen elegans, Link Ann . 1, 57; Engl. Bot. 2181. 
On rocks, especially near the sea. 
P. 450. spec. 7. For lecanora sophodes read rinodina 
soph odes. 
P.451. 8. # Rinodina subfusca. Brownish rinodine. 
Crust cartilaginous, smooth, grows granulated, uneven, 
white and greyish; apothecia flat, slightly convex, brownish 
and black ; thalloid border swollen, not cut, at length wavy, 
and crenated. 
