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12
Subordo 4.
Schizopoda.
Fam. I. Lophogastridæ.
36. Lophogaster typicus. M. Sars.
Exemplarer af denne eiendommelige og interessante
Schizopode blev under Expeditionens 1ste Togt indsamlede
ved Huso paa 40—60 Favnes Dyb. Den er foruden ved
Norges Vest- og Sydkyst observeret ved Shetlandsøerne af
Norman (Ctenomysis alata), og jeg har nylig havt
Anledning til at undersøge 3, under "Challenger" Expeditionen
udenfor det gode Haabs Forbjerg indsamlede Exemplarer,
der i ingen Henseende skiller sig fra den nordiske Fonn.
Fam. 2. Euphausiidæ.
37. Nyctiphanes norvegica, (M. Sars).
Mine Undersøgelser af det særdeles righoldige under
Challenger-Expeditionen indsamlede Materiale af
Euphau-siider har overbevist mig om. at dennelForin ikke er nogen
ægte Thysanopoda, hvorimod den noie slutter sig til en i
det australiske Hav forekommende Form, som nøiere vil
blive beskreven i min Report over Challenger-Expeditionens
Schizopoda. .Teg har derfor for begge disse Arter troet
at maatte opstille en ny Slægt, Nyctiphanes.
Nærværende smukke Art blev under vor Expedition
observeret paa flere Steder i det aabne Hav udenfor vor
Kyst, svømmende lige i Overfladen af Vandet, som oftest
dog kun i yngre Exemplarer. Paa en af Stationerne (75),
V af Namsenfjord, var den tilstede i saadanne enorme
Masser, at Søen paa enkelte Steder antog en brunlig Farve.
Arten er udbredt langs vor hele Kyst og nordlig til
Grønland, Nordamerikas Østkyst og den murmanske Kyst.
Det er muligt, at den af Bell observerede britiske Fonn,
Thysanopoda Couchii er identisk med nærværende Art.
Subordo 4.
Schizopoda.
Fam. I. Lophogastridæ.
36. Lophogaster typicus, M. Sars.
Specimens of this peculiar and interesting Schizopod
were collected, on the 1st cruise of the Expedition, off
Husø, at a depth ranging from 40 to 60 fathoms. Besides «
the west and south coasts of Norway, the animal has also
been observed off’ the Shetland Islands, by Norman
(Ctenomysis alata), and I have recently had opportunity of
examining 3 specimens collected on the "Challenger"
Expedition off the Cape of Good Hope, which in no respect
differ from the Northern form.
Fam. 2. Euphausiidæ.
37. Nyctiphanes norvegica, (M. Sars).
My investigations of the exceedingly abundant material
of Euphausiidæ collected on the "Challenger" Expedition,
have convinced me that this form can not be a true
Thysanopoda. while, on the other hand, it closely approximates
a species occurring in the Australian Sea, to be described
in detail in my forthcoming Report on the Schizopods of
the "Challenger" Expedition. Hence, I have seen fit to
establish for these two species a new genus, viz.
Nyctiphanes.
The present beautiful species was observed on the
Norwegian Expedition in several localities, at a
considerable distance from the coast, swimming about at the
surface of the water; as a rule, however, exclusively young
individuals. At one of the Stations (Ståt. 75), west of
the Namsenfjord, the animal occurred in such profusion,
that the sea, in some localities, had a peculiar brownish
tint.
The form is distributed along the whole of the
Norwegian coast, extending as far north as Greenland, the
east of North America, and the Murman coast. Maybe,
the British form, Thysanopoda Couchii, observed by Bell,
is identical with the present species.
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