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21
Findesteder. St. 267, 290, 323, 357, 363,
Porsangerfjorden.
Denne art opdagedes först af M. Sars paa lians reise
til Lofoten og Finmarken i 1849. I lians herom afgivne
beretning blev den kortelig beskreven under navnet
tubuli-ipora lucernaria. Den gjenfandtes ved Finmarken i 1856
af M’Andrew, og Busk identificerede den feilagtig med
Jamesons art domopora truncata. Senere er arten
udførligere beskreven af M. Sars (23) og Smitt (24, II).
Lorenz (16, p. 99) opfører domopora stellata,
Gold-fuss fra Jan Mayen, men udtrykket „durcli einen hosonders
dttnnen Stiel ausgezeichnet" vidner om. at det er defrancia
lucernaria, som har foreligget. (Jan Mayen som findested
for domopora stellata bør saaledes udgaa).
Dejrancia lucernaria har efter dette følgende
udbredelse: Karahavet, Kola, Spitsbergen, Grønland (Levinsen,
Smitt), Jan Mayen (Lorenz), nordlige Norge (M. Sars).
I Norge har Sars taget nævnte art ved Vadsø, i
Komag-fjord og Øxfjord (Finmarken), ved Beian
(Trondhjemsfjorden), samt i Kristianiafjorden et forkrøblet eksemplar.
Aurivillius omtaler den fra Kvænangen, og jeg har vinteren
1899 taget den paa forskjellige steder fra Lofoten til
Pors-angerfjorden. Jeg sætter foreløbig Lofoten som artens
sydgrænse ved vor kyst; thi det ene (muligens ogsaa subfossile
eksemplar), som M. Sars tog ved Vallø i Kristianiafjorden
kan ikke berettige til at flytte udbredelsesgrænsen did. Ved
Beian er den heller ikke gjenfunden siden Sars’s dage. Et
interessant faktum er det imidlertid, at denne udpræget
arktiske form i dette aarhundrede er observeret baade i
Trondhjems- og Kristianiafjorden. For at levere et billede
af de fysiske forhold, hvorunder defrancia lucernaria lever,
vil jeg opføre dybde, temperatur og saltgehalt paa endel
af de steder, hvor arten observeredes paa min reise
vinteren 1899, samt paa Nordhavexpeditionens stationer.
Occurrence. St. 267, 290, 323. 357, 363,
Porsanger Fjord.
This species was first discovered by M. Sars on his
journey through Lofoten and Finmark in 1849. In his
report, it was briefly described under the name Tabalipora
lucernaria It was found again in Finmark, in 1856, by
M’Andrew, and Busk identified it erroneously with
Jameson’s species Domopora truncata. The species was
subsequently described at greater length by M. Sars (23) and
Smitt (24. II).
Lorenz (16. p. 99) records Domopora stellata,
Gold-fuss, from Jan Mayen, but the expression „durcli einen
besonders dünnen Stiel ausgezeichnet", shows that it has
been Dejrancia lucernaria. (Jan Mayen ought therefore
to be omitted from the list of places where Domopora
stellata is found).
According to this, Defrancia lucernaria has the
following distribution: the Kara Sea, the Kola Peninsula,
Spitsbergen, Greenland (Levinsen, Smitt), Jan Mayen
(Lorenz), the north of Norway (M. Sars). Sars has found the
species in Norway, at Vadsø, in the Komagfjord and
Ox-fjord (Finmark), at Beian (Trondhjem Fjord), and a
deformed specimen in the Kristiania Fjord. Aurivillius
mentions it from Kvænangen, and I found it in the early part
of 1899 in various places from Lofoten to Porsanger Fjord.
In the mean time, I would set Lofoten as the southern
limit of the species on our coast; for the single (possibly
also subfossilised) specimen found by M. Sars at Vallø in
the Kristiania Fjord, does not justify the removal of the
distribution limit thither. Nor has it been found again at
Beian since Sars’s day. It is, however, an interesting
fact that this peculiarly arctic form has been observed
during this century both in the Trondhjem and Kristiania
Fjords. In order to give a representation of the physical
conditions in which Defrancia hicernaria lives, 1 will give
the depth, temperature and salinity at some of the places
where the species was observed during my journey at the
beginning of 1899, and at the North Atlantic Expedition
Stations.
1890 Sted Dybde Temp. Saltgehalt
3die mars Kirkfjorden . 50 in. 2.r>° G 33.40 o/,,,,
(Moskenesø)
19de april Kvænangen 90 - 0.7m0 - 34.21 -
2 Ide ,. Jøkelfjord .... 90 - 1.4° - 34.:!.", -
27(le „ Porsangerfjord . 200 - 0.’2° - 34.48 -
1899 Place Depth [-Temperature-] {+Tempera- ture+} Salinity
March 3 Kirkfjord .... 50 ni. 2.f>° C. 33.40 „o
(Moskenesø)
April 19 Kvænangen . 90 - 0.7f>° - 34.-il •
21 Jøkelfjord .... 90 - 1.4° - 34.35 -
, 27 Porsanger Fjord 200 - 0.’2° - 34.48 -
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