102 I- Koi,i)i:iiri' KosicNviNUE. 



l-\uii. Sqiiamariaceæ. 

 Crnoria Fries. 

 '). Cruoria arctica Schmitz. 



K. Uoscnviiif(o (1893) p. 784, (18!)8 I) p. 15. 



Il forms criisls up to 4 cm. in diameter on barnacle-shells and 

 on Litholhamnion lœve; il seems lo be always attached to a calca- 

 reous substratum. The specimens of Ihe collection fully agree with 

 the original ones from West Greenland and are, like those, provided 

 with glandular cells. In a thick crust ripe sporangia (56// long, 

 23« broad) \vere found in the upper part while abortive sporangia 

 were visible at a lower level. This species is always infested by 

 (jhlorochytriiini Schmitzii. — Found in various depths e. g. ca. 38 

 meters. 



Loc. Along Koldewov Island; olfBaadskæret and along Vestre Havnenæs. 



Cruoria firma Kjellman (19ü()) p. 14, is hardly specifically distinct from C. arctica. 

 According to Kjellman it differs from this species b}' having the basal lajer consisting 

 of at least two layers. This statement, which is put forward however by the Swe- 

 dish author with some reservation, 1 suppose to be founded on imperfect prepara- 

 tion ; sections of C. arctica which are not ver}»^ thin or exactly vertical lead easily to 

 the belief that there is more than one basal layer of cells. The sporangia appear to 

 offer no difference; they were only comparatively narrow in Kjellmans specimens. 

 And tiie erect filaments seem to have essentialh' the same structure as in Cr. arctica. 



Petrocelis J. Ag. 



6. P. polygyna (Kjellm.) Schmitz. 



K. Rosenvinge (1898 I) p. 16. 



Hæmescharia polygyna Kjellman il883) p. 182. 



Some few crusts of this species, partly sterile, partly with car- 



pogonia have been found growing on stones. 



Loc. Along Vestre Havnenæs, ca. 38 meters, and another locality. 



Cruoriopsis Du four. 



7. C. hyperborea sp. n. 



Crusta intense sangvinea, 80 — 100/^ crassa. Stratum basale uni- 

 stratosum, e filis radiantibus compositum, cellulis 4*5 — 5'5/ji crassis, 

 8---105/i altis, crassiludine vulgo 2— 3-plo longioribus. Fila erecta 

 5 — 8-cellularia, cylindrica vel sur.sum paulo incrassata, 75 — 10;/ 

 crassa, cellulis diametro aequilongis vel ad duplo longioribus, chro- 

 matophorum unicum continentibus. Sporangia in filis erectis termi- 

 nalia vel in parte superiori eorum lateralia, sessilia vel rarius stipi- 

 tata, obovata vel breviter oblonga, 15 — 23 /i longa, 11 — 13/2 lata. 



One crust only of this new species has been found growing on 

 a stone. It has a deep blood-red colour, by which it differs from 



