KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 15] 
Remark on the species. This plant, as I understand it here, is identical with that 
distributed by Anrescuouc |. c. Neither Lynesye’s, nor J. G. AGanpu’s, nor even Are- 
scnouG’s, descriptions and diagnoses of Chantransia (Callithaimnion) secundatu agree very 
well with that alga, and it is doubtful, I think, whether it is really identical with 
Lyncpye’s Callithamnion Daviesii > secundatum. This is differently understood by 
different authors, the short description and incomplete figure furnished by Lynepyr 
asily giving rise to different explanations '). 
I shall give a description of the Scandinavian Chuntransia secundata at another 
time, when I have had an opportunity of examining living individuals. Dried specimens 
are not well fit for a closer investigation. 
Habitat. On the coast of Norway the present alga is litoral, growing chiefly on 
Porphyra laciniata. On the west coast of Novaya Zemlya I have found it within the 
sublitoral zone, attached to Odonthalia dentata. It has been collected with spores in 
the Polar Sea in July and August. 
Geogr. Distrib. It belongs both to the Atlantic and the arctic region of the Polar 
Sea, but in the latter is only little spread. Nor does it seem to be more widely distri- 
buted or particularly abundant within the former region. Its most northerly locality 
is Rogatshew Bay on the west coast of Novaya Zemlya, Lat. N. 71° 23’. 
Localities: The Norwegian Polar Sea: Nordlanden, pretty common. 
The Murman Sea: Rogatshew Bay, rare. 
Fam. DELESSERIACEZ J. G. Aca. 
Hpicr. p. 444. Cfr. Alg. med. p. 1565. 
Gen. Delesseria (LAMour.) J. G. Aa. 
Kpier. p. 477; Lamour. Ess. p. 122; ex parte. 
Delesseria rostrata (Lynus.) J. G. Ag. 
Spec. Alg. 2, p. 685. Gigartina purpurascens y rostrata Lynas. Hydr. Dan. p. 46. 
Descr. Delesseria rostrata J. G. Ac. Spec. Alg. 2, p. 685. 
fig. | Gigartina purpurascens y rostrata Lynes. |. c. t. 12 B. 
Syn. Gigartina Fabriciana Lynos. |. c. p. 48, t. 11, D. Cfr. J. G. Ac. lL. c. p. 698. 
Habitat: In the collection of Greenland algw at the Copenhagen Muscum there 
are some specimens of this alga with sporocarps and tetrasporangia. By the statement 
of Vaut on the label affixed to them, they have been collected in March and were 
found attached »ad saxa maritima». Besides this, I know nothing about the habitat of 
this species. 
') Fartow’s T'rentepohlia virgatula var. secundata, New. Bngl. Alg., p. 109 is probably not Callithamnion Da- 
viesti § secundatum LynGB., but C. lueurians J. G. Ac., Kurz., Trentepohlia virgatula Akescu. 
