ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINGAR 1872. N:0 6. 29 
Forma a perrara et ß vulgatissima in insulis Spetsb., ad 
Kobbebay et Adventbay, et Beeren Eiland. 
8. C. pseudopyramidatum Lundell Desm. p. 41. 
Forma major. 
Long. 0,002 = 50 p. Lat. 0,0013'" = 33 p. 
Ad Kobbebay in ins. Spetsberg. 
Forma minor. 
Lons:. 0,001(3'' = 40 u. Lat. 0,0012" = 30 //. Crass. 0,00075 
o 7 r J i J 
= 18 u. 
i 
in insul. Spetsberg. 
9. C. quadratum Ralfs (Br. Desm. p. 92, t. XY, f. 1, a, b; 
Lundell Desm. p. 47). 
Long. 0,0023" = 59 p. Lat, 0,0013—15' = 33—37 p. Lat. 
istbmi 0,00078' = 20 p. 
Ad Kobbebay in ins. Spetsb. 
10. C. yr anatum Bréb. ß elongatum n. var. Tab. VI, f. 6. 
Duplo longior quam latior. Membrana subtilissime punctata, 
Long. 0,0022" = 59 p. Lat, 0,00114" = 29 p. Crass. 0,0008" 
= 20 p. Lat, marg. term. circiter 0,0004" = 10 p. 
In insula Beeren Eiland. 
11. C. bioculatum Bréb. (in Ralfs Br. Desm. p. 95, t, XV, 
f. 5 c; Heterocarpella bioc. Bréb. Alg. Fal. sec. Auct.). 
Forma major semicellulis e fronte visis C. protuberantis 
Lundell Desm. t, III, f. 17 a, e latere et vertice visis habitu C. 
tumidi Lund. Desm. t. III, f. 16 b et c. 
Long. 0,00116" = 28 //. Lat, 0,001" = 25. Crass. 0,00072" 
= 18 a. Lat, isthmi 0,0003" — 7,5 p. 
In insul. Spetsb. 
12. C. crenatum Ralfs (in Ann. Nat, Hist, v. XIV, p. 394). 
Ha? forma? in insulis Spetsb. a nobis inventae: 
A. Semicellulae apice truncato quadrieren atae lateribus bi — 
trierenatae [quadricrenatae: Ralfs Br. Desm. t, XV, f. 7 a], an- 
gulis superioribus truncatis erenis singulis praeditis, marginem 
versus subtilissime granulatae (granulis saepe binis), ad basin 
seriebus granulorum singulis vel binis horizontalibus vel non- 
