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Transactions of the Society. 
is quite distinct from C. prsemorsum Breb. (see Nordst. Norges Desm., 
tab. i. fig. 1), and C. formosulum Hoff. 
C. 'prsemorsum Breb. B., near Windermere, Crummock Water, 
Embleton, near Cockermoutb, Blea Tarn in Borrowdale. 
G. Broomei Thwaites. L., Crummock Water. 
G. ochthodes Nordst. Frequent. Occurs up to 2400 ft. on 
Helvellyn. 
var. amcebum yar. n. Fig. 81. 
Yar. semicellulis subtruncatis, yerrucis depressis irregu- 
lar ibus et sinuatis angulis 3-5. 
Long. 87 y ; lat. 60 y ; lat. isthm. 21 y ; crass. 
40 y. Bn., Hk. Frequent. 
G. confusum Cooke var. regularius Nordst. Hp., Bn. 
subsp. amhiguum West. Hk., Bt. 
G. amoenum Breb. H. 
G. cylindricum Ralfs. H. 
C. SUBCYLINDEICUM Sp. B. Fig. 22. 
C. submediocre, diametro lj-plo longius quam latius, 
leviter constrictum ; semicellulse semi-ellipticae cum lateribus 
subrectis, irregulariter et dense granulosae, cum annulo granu- 
lorum majorum ad basem ; a vertice visae circulares. 
Long. 37 y\ lat. 21 y ; lat. istbm. 18 y. L. 
It differs from G. cylindricum Ralfs in tlie semicells not being 
subquadrate, in beiug wider towards the base, in the rounded ends, in 
the granules not being arranged in lines, and in the basal ring of 
larger granules. 
G. annulatum (Nag.) De Bary. 
var. elegans Nordst. 
Long. 46-52 y\ lat. 17-18 y. Ilk., Bt., Bo., Pike of 
Bliscoe. 
C. subcostatum Nordst. Bo., Esthwaite Water. 
G. subyrotumidum Nordst. B. 
G. Bceckii Wille. H., B., W., near Cockermoutb. 
G. s'phalerostichum Nordst. Bo., 11., Sk., Bt., C., Blea Tarn in 
Borrowdale. 
C. codatum Ralfs. Very frequent. 
G. ornatum Ralfs. B., H., W., Hp., near Cockermouth. 
G. quinarium Lund. B., Bn. 
G. cyclicum Lund. Bo., H. 
var. angulatum West, Freshw. Alg. of N. Yorks, in Journ. 
Bot., Oct. 1889, t. 291, f. 2. [G. Nordstedtii Reinsch., 
Contrib. Alg. et Fung., t. 10, f. 11.] 
Long. 48 y ; lat. 54 y ; lat. isthm. 19 y ; crass. 23 y. 
Fig. 19. Bo. 
G. speciosum Lund. 
*var. biforme Nordst. Kirk Fell. 
