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SMÄRRE UPPSATSER OCH MEDDELANDEN
285
host. In the actual case we must conclude that the cod in question probably
lived in shallow water for so long time as it takes for the alga to grow 1 mm
long, for in other cases the alga had hardly developed so well on the parasite.
Furthermore, by studying the occurrence of epizoic algae as well as
epizoic animals on crustaceans, one can form an opinion 011 the time of
moulting of these animals. If the time of the spreading of the spores or the
time of the appearance of larvae of epizoic animals are known, one gets the
minimum time that has elapsed since the last moult of the host, lf the time
of possible infection is not restricted to a short period only, knowledge of
the rate of growth of the algae or the epizoic animals will help us in the same
way. On the other hand, if one knows the time of moulting of an epizoic
animal and the rate of growth of an epizoic alga or animal, one can ascertain
the time of infection. From a single find, however, only very lew conclusions
can be drawn in these respects.
The material is kept in the Natural History Museum in Gothenburg.
Hans Brattström.
Literature.
Anderson, K. A., Fiskar och fiske i Norden. Bd 1. — Sthlm 1942.
Kjellman, F. R., Handbok i Skandinaviens hafsalgflora. 1. Fucoideae. — Sthlm 1890.
Ivylin, Harald, Studien über die Algenflora der schwedischen Westküste. — Diss.
Ups. 1907.
Lakowitz, K., Die Algenflora der gesamten Oslsee. — Danzig 1929.
Levring, Tore, Zur Kenntnis der Algenflora der norwegischen Westküste. - - Lunds
Univ. Arsskr. N.F. Avd. 2. Bd 33. Nr 8. Lund 1937.
Studien über die Algenvegetalion von Blekinge, Siidschweden. — Diss. Lund
1940.
Newton, Lily, A Handbook of the British Seaweeds. — London 1931.
Oltmanns, Friedrich, Morphologie und Biologic der Algen. 2. Aufl. Bd 3. — Jena
1923.
Oorde-De Lint, G. M. van & Schüurmans Stekhoven Jr, J. H., Copepoda
parasitica. Die Tierwelt der Nord- und Ostsee. Lief. 31. Lpz. 1936.
Rosenvinge, L. Kolderup, Grönlands I lavalger. Meddelelser 0111 Grönland. Bd 3.
Kbhvn 1893.
On some Danish Phaeophyceae. Mem. de 1’Acad. Roy. des Sciences et des
Lettres de Danemark. Seel. des Sciences. Ser. 9. T. (>. Kbhvn 1935.
Süneson, Svante, Ectocarpus fasciculatus growing 011 the fin-spines of fishes. —
Bol. Notiser. 1939. Lund 1939.
Martornet (Eryngium maritimum) upptäckt på Gotska Sandön.
Under etl studiebesök i zoologiskt syfte på Gotska Sandön den 25 juli
1945 vistades jag huvudsakligen i östra delen av ön. Från Kyrkuddens fyr
vandrade jag söderut längs dynkusten förbi Franska bukten, då jag blev varse
ell exemplar av martornet (Eryngium maritimum), som växte några tiotal 111
20 Botaniska Xotiser m7.
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