16 
Portlandia subæquilatera, Jeffreys. 
Yoldia pygmæa, var. symmetrica, Friele, Nyt Mag. f, Naturvidensk., vol. 24, 1878, p. 222. 
Jorma propinqua, Leche, Kongl. Sv. Vetensk. Akad. Handl., vol. 14, no. 2, 1878, p. 26, PI. 1, fig. 7 a—b. 
Leda subequilatera, Jeffreys, Proc, Zool. Soc., 1879, p. 579, Pl. 46, fig. 1. 
Portlandia subequilatera slutter sig nær til portlandia 
tenuis, fra hvilken den væsentlig adskiller sig ved sin mere 
ovale afrundede form. 
den ikke rettest 
Det er derfor et sporgsmaal, om 
burde opfattes som en varietet af denne. 
Findested. Stationerne 18, 48, 124, 200, 225, 248 
og 362. Dybde 195—778 fy. 
Portlandia subequilatera er tidligere kjendt fra de 
store oceandyb udenfor Europas og Nordamerikas kyster. 
Sydgrænsen for artens udbredelse er ved Azorerne og Den 
mexikanske golf. Den bathymetriske udbredelse er 92— 
Portlandia subequilatera is nearly allied to P. tenis, 
from which it is distinguished by its more oval, rounded 
shape. It is a question whether it ought not more 
properly to be regarded as a yariety of that species. 
Locality. Stations 18, 48, 124, 200, 225, 248, and 
Depth 195—778 fathoms. 
Portlandia subequilatera is known to occur in the great 
ocean depths off the coasts of Europe and North America. 
Its southern limit is at the Azores and the Gulf of Mexico. 
Its bathymetrical distribution is from 92 to 1731 fathoms. 
362, 
pygmæa, var. gibbosa, M. Sars, Foss. Dyrelevninger, 1865, p. 38, figs. 75—83. 
Portlandia lenticula, G. O. Sars, Moll. Reg. Arct. Norv., 1878, p. 39, Pl. 4, fig. 10 a—b. 
1731 fy. 
Portlandia lenticula, Møller. 
Nucuia lenticula, Møller, Ind. Moll. Grønl., 1842, p. 17. 
Yoldia abyssicola, Torell, Spitsbergens Moll., 1859, p. 149, Pl. 1, fig. 4 a—p. 
Findested. Stationerne 257, 261, 290, 326, 357 
samt ved Rognan, Salten, 20 fv. Dybde 20—191 fv. 
Portlandia lenticula er efter al sandsynlighed en circum- 
polar art, idet dens udbredelse strækker sig fra Wellington 
Kanalen og Grønland til ost for Taimurhalvøen (116° Ø. L.). 
Dens sydgrense er ved Nordafrikas vestkyst. Paa de 
sydligere findesteder synes den dog blot at være tagen sub- 
fossil. Den forkommer langs Norges vest- og nordkyst, 
søndenfor Bodø er den dog sjelden. Den bathymetriske 
udbredelse er 20—656 fv. Fossil er den funden i Norge, 
England, nordlige Rusland, Sibirien og Nordamerika. 
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Locality. Stations 257, 261. 290, 326, and 357, 
and Rognan, Salten (20 fathoms). Depth 20 —191 fathoms. 
Portlandia lenticula is in all probability a circumpolar 
species, as its range is from Wellington Channel and 
Greenland to the east of the Taimur Peninsula (116° E. 
Long.). Its southern limit is the north-west coast of 
Africa; but it appears to be only sub-fossil in the 
more southern localities. It occurs along the west 
and north coasts of Norway, although not common south 
of Bodø. Its bathymetrical distribution is from 20 to 656 
fathoms. It is found as a fossil in Norway, England, the 
north of Russia, Siberia and North America. 
Portlandia intermedia, M. Sars. 
Yoldia intermedia, M. Sars, Foss. Dyrelevninger, 1865, p. 38, tab. 3, fig. 92—96. 
Portlandia — 
Leda = 
Findested. Stationerne 224, 225. 260, 261, 262, 
273, 312, 323, 326 og 357. Dybde 95—658 fv. 
Den er en circumpolar art, der er kjendt fra Grøn- 
land, Spitsbergen, Shetlandsøerne, Murmankysten, Novaja 
Semlja, Karahavet og Beringshavet. Desuden er den 
tagen udenfor kysten af Portugal, antagelig er den dog 
her blot subfossil. Ved de norske kyster var den tidligere 
kun kjendt fra Varangerfjorden, hvor den fandtes først af 
M. Sars og senere af G. O. Sars. Den batbymetriske 
udbredelse er 25—220 fy. (levende) De paa station 312 
—658 fv. fundne exemplarer var døde. Jeffreys angivelse 
af 1333 fr. maa bero paa en misforstaaelse. Fossil er den 
kjendt fra Norge og det nordlige Rusland. 
G. O. Sars, Moll. Reg. Arct. Norv., 1878, p. 38, Pl. 3, flg. 9 a 
Leche, Kongl. Sv. Vet. Akad. Handl., vol. 16, no. 2, 1878, p. 24, Pl. 1, fig. 5. 
b. 
Locality. Stations 224, 225, 260, 261, 262, 273, 
312, 323, 326, and 357. Depth 95—658 fathoms. 
It is a ceireumpolar species, previously found off 
Greenland, Spitsbergen, the Shetland Isles, the Murman 
Coast, Novaja Semlja, and in the Kara and Bering Seas. 
It has also been found off the coast of Portugal, although 
probably only sub-fossil there. In Norway, it was formerly 
only known in the Varanger Fjord, where it was first 
detected by M. Sars, and subsequently by G. O. Sars. Its 
bathymetrical distribution is from 25—220 fathoms (living). 
The specimens from Station 312 (658 fathoms) were dead. 
Jeffreys reports it from 1333 fathoms, but this is no doubt 
due to a misapprehension, It is known as a fossil in 
Norway and the north of Russia. 
