Den bathymetriske udbredelse er 5—1095 fy. Fossil er 
den funden i Skandinavien, nordlige Rusland, Spitsbergen, 
Shetlandsgerne, Skotland og Canada. 
60 
yet been proved south of Bodø. The bathymetrical distri- 
bution is from 5 to 1095 fathoms. It is a fossil in Scan- 
dinavia, the north of Russia, Spitsbergen, the Shetland 
Isles, Scotland, and Canada. 
Cyclostrema basistriatum, Brugnone, 
Cyclostrema basistriatum, Brugnone, Miscel Malac., vol. 2, 1876, p. 17, fig. 24. 
Findested. Stationerne 154, 
40—60 fr. Dybde 40—3é0 fy. 
Cyclostrema basistriatum er udbredt langs hele den 
norske kyst fra Christianiafjorden til Lofoten og Vester- 
aalen. kjendt fra det nordlige af At- 
lanterhavet, hvor den er funden af Valorous, Lightning, 
Porcupine og Travailleur expeditionerne. Sydgrænsen for 
Den forekommer des- 
Ifølge Jeffreys skal den 
173 b, 255 og Husø, 
Endvidere er den 
artens udbredelse er ved Portugal, 
uden ved Nordamerikas østkyst. 
ogsaa forekomme ved Spitsbergen. Den bathymetriske 
udbredelse er 40—1333 fv. Fossiler den funden i Fica- 
ragzi. 
Vi har havt anledning til at sammenligne et original- 
exemplar af Cyclostrema affine, Verrill*), med den ved vor 
kyst forekommende cyclostrema basistriatum. Saavel i skulp- 
tur som i form fandtes der saa stor overensstemmelse mel- 
lem dem, at vi maa anse dem for identiske. At domme efter 
det her omtalte exemplar synes Verrills tegning at vere altfor 
slank. Mellem cyclostrema affine og cyclostrema diaphanum, 
Verrill, er der liden forskjel. 
skulptur rundt umbilicus; den ligner i denne henseende 
mere cyclostrema rugulosum, Da vi imidlertid ikke har 
noget exemplar af Verrills form, tør vi ikke nærmere ud- 
tale os herom, 
Vi er uenig med W. H. Dall, der anser cyclostrema 
affine identisk med cyclostrema trochoide, Jeff.*). 
Den sidste har dog en finere 
G. 0. Sars, Moll. Reg. Arct. Norv.. 1878, p. 128, Pl. 8, fig. 8a 
Jeffreys, Proc. Zool. Soc., 1883, p. 90. 
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c, Pl. II, fig. 6, Pl. XVIII, fig. 3. 
Locality. Stations 124, 173 b, and 255, and Huse 
(40—60 fathoms). Depth 49—350 fathoms. 
Cyclostrema  basistriatum is distributed all along the 
Norwegian coast from the Christiania Fjord to Lofoten 
and Vesteraalen. It the North 
Atlantic, where it has been found by the ‘Valorous’, the 
‘Lightning’, the ‘Porcupine’, and the ‘Trayailleur’. The 
southern limit of its distribution is at Portugal. It oceurs 
moreover on the east coast of North America; and ac- 
cording to Jeffreys, it is also found in Spitsbergen. Its 
bathymetrical distribution is from 40 to 1333 fathoms. It 
is a fossil in Ficaragzi. 
is further known from 
We have had an opportunity of comparing an original 
specimen of Cyclostrema affinis, Verrill?), with the Cyclo- 
strema basistriatum occurring on the Norwegian coast. 
In both seulpturing and shape there was so great a resem- 
blance that we can only regard them as identical. Judging 
from the type-specimen, Verrill’s drawing seems to make 
it too slender. There is very little diffference between 
Cyclostrema affine and Cyclostrema diaphanwn, Verrill. 
The latter, however, has finer sculpturing round the umbi- 
licus, more resembling in this respect Cyclostrema rugulo- 
sum. Not, however, having a specimen of Verrill’s we will 
not venture to express any decided opinion on the subject. 
We do not agree with W. H. Dall in regarding 
C. affine identical with C. trochoide, Jeff.*). 
Cyclostrema rugulosum, 
Jeffreys, Proc. Zool. Soc., 1883, 
Findested. Huso, 100 fv. og station 173 b, 300 fy. 
Cyclostrema rugulosum er kjendt fra Norges vestkyst 
op til Lofoten, Færøkanalen, mundingen af Kanalen, Mes- 
sina og New England. Den bathymetriske udbredelse er 
80-—539 tv. Fossil er den ifølge Seguenza funden ved 
Messina. 
(Jeffreys, M S.), G. 0. Sars. 
Cyclostrema rugulosum, Jeffreys, m. s., G. 0. Sars, Moll. Reg. Arct. Norv., 1878, p. 129 og 344, Pl. 21, fig. 1 a—b. 
Verrill, Trans. Connecticut Acad, vol. 5, 1882, p. 533. 
p. 90. 
Locality. Husø (100 fathoms), and Station 173 b 
(800 fathoms). 
Cyclostrema rugulosum oceurs off the west coast of 
Norway up to Lofoten, in the Faroe Channel, at the 
mouth of the English Channel, off Messina and New Ene- 
land. Its bathymetrical distribution is from 80 to 539 
fathoms. According to Seguenza, it is a fossil in Messina. 
1) Trans. Connecticut, Acad., vol. 6, 1894, p. 199, tab. 32, fig. 15. 
%) Bull. o. the Museum of comp. Zool., vol. 18, p. 393. 
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1) Trans. Connecticut Acad., Vol. 6, 1884, p. 199, Pl. XXXII, fig. 15. 
2) Bull. o. the Museum of comp. Zool., vol. 18, p. 393. 
