17 
Portlandia lucida, Lovén. 
Yoldia lucida, Loven, Ind. Moll. Scand., 1846, p. 46. 
Leda — Jeffreys, Brit. Conch., vol. 
Portlandia lucida, G. O. Sars, Moll. Reg. 
Findested. Stationerne 10, 18, 101, 252, 253, 255, 
257, 260, 261, 262, 326, 338, 357 og Sognefjord, 100 fv. 
Dybde 100—412. 
Portlandia lucida er almindelig langs hele den norske 
kyst paa dyb over 20 fv. Den er endvidere kjendt fra 
Middelhavet, Kattegat, Skagerak og det nordlige af At- 
lanterhavet med tilstødende dele af Ishayet; artens nord- 
grense er ved Spitsbergen, sydgrænsen ved Gibraltar. 
Paa den amerikanske side gaar den fra Melville Bay i 
nord, til Massachusetts i syd. Den bathymetriske udbre- 
delse er 10—1456 fy. Fossil er den funden i Norge og 
England. 
M. Sars, Foss. Dyrelevninger, 1865, p. 38, Pl. 3. figs. 
ST—9L. 
Dy Tel). jo, 73, JE, MOOR steel 
Arct. Norv., 1878, p. 37, Pl. 4, fig. 8 a—b. 
| 
Locality. Stations 10, 18, 101, 252, 253, 255, 257, 
260, 261, 262, 326, 338, and 357, and the Sogne Fjord 
(100 fathoms). Depth 100—412 fathoms. 
Portlandia lucida is common all along the Norwegian 
coast in depths of more than 20 fathoms. It has also 
| been found in the Mediterranean, the Kattegat, the Ska- 
gerak, and the northern part of the Atlantic with the ad- 
joining portions of the Arctic Ocean. The northern limit 
of the species is at Spitsbergen, its southern at Gibraltar. 
On the American side, it ranges from Melville Bay in the 
| north to Massachusetts in the south. 
distribution is from 10 to 1456 fathoms. 
fossil in Norway and England. 
Its bathymetrical 
It is found as a 
Portlandia expansa, Jeffreys. 
Leda expansa, Jeffreys, Ann. & Mag. Nat. Hist., ser. 4, vol. 18, 1876, p. 431. 
Portlandia expansa foreligger kun i nogle faa exem- 
plarer fra stat. 290, 191 fv. og stat. 863, 260 tv. Arten 
er tidligere kjendt fra mundingen af Baffinsbugten, kysten 
af New Foundland, oceandybet sydost af Grønland, Irlands 
nordvestkyst, Biskayerbugten og mellem Gibraltar og Azo- 
Jeffreys, Proc. Zool. Soc., 1879, p. 580, Pl. 46, fig. 4. 
There are only a few specimens of Portlandia expansa 
from stations 290 (191 fathoms), and 363 (260 fathoms). 
The species had previously been found at the mouth of 
Baffin's Bay, off the coast of Newfoundland, in the deep 
water to the south-east of Greenland, off the north-west 
coast of Ireland, in the Bay of Biscay, and between 
Gibraltar and the Azores. Its bathymetrical distribution 
| is from 191 to 1750 fathoms. 
Leda pernula, Miiller. 
Arca pernula, Miller, Beschiift. Berliner Gesellsch. naturforsch. Freunde, vol. 4, 1779, p. Di. 
— G. O. Sars, Moll. Reg. Arct. Norv., 1878, p. 35, Pl. 5, fig. 1 a—d. 
Verrill & Bush, Proc. U. S. Nat. Museum, vol. 20, 1898, p. 855, Pl. 82, fig. 2. 
rerne. Den bathymetriske udbredelse er 191—17509 fy. 
Leda — Lovén, Ind. Moll. Scand, 1846, p. 34. 
Findested. Stationerne 224, 261, 267, 270, 323, 
336, 357, Saltenfjord, 20 fr, Advent Bay, 20—40 fv., 
Magdalena Bay, 30—60 fr. Dybde 20—223 fy. 
Denne variable art, som er jevnt uabredt langs hele 
den norske kyst, er kjendt fra saavel det pacifikarktiske 
som det atlantikarktiske omraade. Inden sidstneynte har 
den sin sydgrænse ved Maine og Biskayerbugten. Den 
bathymetriske udbredelse er 4—517 fv. Fossil er den 
funden i Skandinavien, De britiske wer, Nord Rusland, 
Spitsbergen, Sibirien, Nordamerika og Grønland. 
Locality. Stations 224, 261, 267, 270, 323, 336, 
and 857, Salten Fjord (20 fathoms), Advent Bay (20—40 
| fathoms), Magdalena Bay (30—60 fathoms). Depth 20— 
| 223 fathoms. 
This variable species, which is evenly distributed 
all along the Norwegian coast, is found in both Pacific- 
Arctic, and Atlantic-Arctic regions. Its southern limit 
on the Atlantic side is at Maine and the Bay of Biscay. 
The bathymetrical range is from 4 to 517 fathoms. It is 
found as a fossil in Scandinavia, the British Isles, northern 
Russia, Spitsbergen, Siberia, North America, and Greenland. 
Den norske Nordhavsexpedition: 
H. Friele & J. A. Grieg. 
Mollusea III. 3 
