12 



Subordo 4. 

 Schizopoda. 



Fam. 1. Lophogastridæ. 



36. Lophogaster typicus, M. Sårs. 



Exemplarer af denne eiendommelige og interessante 

 Schizopode blev under Expeditionens Iste Togt indsamlede 

 ved Husø paa 40 — 60 Favnes Dyb. Den er foruden ved 

 Nnrges Vest- og Sydkyst observeret ved Shetlandsøerne af 

 Norman (Ctenomysis alata), og jeg har nylig havt Anled- 

 ning til at undersøge 3, under "Ohallenger" Expeditionen 

 udenfor det gode Haabs Forbjerg indsamlede Exemplarer, 

 der i ingen Henseende skiller sig fra den nordiske Form. 



Fam. 2. Euphausiidæ. 



37. Nyctiphanes norvegica, (M. Sårs). 



Mine Undersøgelser af det særdeles righoldige under 

 Challenger-Expeditionen indsamlede Materiale af Euphau- 

 siider har overbevist mig om. at denne' Form 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. Jeg 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 Våndet, som oftest 

 dog kun i yngre Exemplarer. Paa enaf 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 Form, 

 Thysanopoda Couchii er identisk med nærværende Art. 



Subordo 4. 



Schizopoda. 



Fam. 1. Lophogastridæ. 



36. Lophogaster typicus, M. Sårs. 



Specimens of this peculiar and interesting Schizopod 

 were collected, on the Ist cruise of the Expedition, off 

 Husø, at a depth ranging from 40 to 60 tathoms. Besides 

 the west and south coasts of Norway, the animal has also 

 been observed off the Shetland Islands, by Norman [Cteno- 

 mysis alata), and I have recently had opportunity of ex- 

 amining 3 specimens collected on the "Ohallenger" Ex- 

 pedition off the Cape of Good Hope, .which in no respect 

 differ from the Northern form. 



Fam. L Euphausiidæ. 

 37. Nyctiphanes norvegica, (M. Sårs). 



My investigations of the exceedingly abundant material 

 of Euphausiidæ collected on the "Ohallenger" Expedition. 

 have convinced me that this form can not be a true Thys- 

 anopoda. while. on the other hand, it closelv approximates 

 a species occurring in the Australian Sea, to be described 

 in detail in mv forthcoming Report on the Sehizopods of 

 the "Ohallenger" Expedition. Hence, I have seen fit to 

 establish for these two species a new genus, viz. Nycti- 

 phanes. 



The present beautiful species was observed on the 

 Norwegian Expedition in several localities, at a eonsider- 

 able distance from the coast, swimming about at the 

 surface of the water; as a rule, however, exclusively young 

 individuals. At one of the Stations (Stat. 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 Nor- 

 wegian 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. 



