Rissoa castanea, Møll. 
—  cimicoides, Forbes 
— griegi, Friele . 
— islandica, Friele . 
— jan mayeni, Friele 
— jeffreysi, Waller 
— membranacea, Ad 
— parva, var. interrupta, Ad. 
— punctura, Mont. 
— _ serobiculata, Møll. 
— striata, Ad. 
— - subsoluta, Arad. 
—  syngenes, Verr. 
— turgida, Jeftr.. 
— verrilli, Friele. 
— wyville-thomsoni, Jeffr. 
— — getlandica, Mont. . 
Rossia glaucopis, Lovén . 
— palpebrosa, Owen 
Saxicava arctica, Lin. 
Scalaria gronlandica, Chemn. 
Scaphander lignarius, Lin. 
= puncto-striatus, Migh. . 
Scaphopoda . ; 
Scissurella crispata, Flem. 
Serripes grønlandica, Chemn. 
Siphonodentalium lofotense, M. Sars 
— quinquangulare, Forbes 
== vitreum, M. Sars 
Skenea planorbis, Fabr. . 
Spirotropis carinata, Phil. 
Syndesmya longicallis, Scacchi . 
Tapes virginea, Lin. . 
Tarams cirrata, Brug... > 
Tectura fulva, O. F. Mill. . 
Tellina balthica, Lin. . 
—  calearia, Chemn.. 
Terebratella spitzbergensis, David. . 
Terebratulina caput serpentis, Lin. 
— septentrionalis, Couth. 
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Teredo pedicellata, Quatr.(?) 
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Tergipes despectus, Johnst. . 
Thracia septentrionalis, Jeffr. 
— truncata, Turt. 
Tonicella marmorea, Fabr. 
Torellia fimbriata, Verr. & Smith 
—  vestita, Jeffr.. . 
Tornatina conula, Wood . 
= nitidula, Lovén 
Trachydermon albus, Lin. 
— exaratus, G. O. Sars 
— marginatus, Pen. 
== ruber, Lowe , 
Trichotropis borealis, Brod. & Sow. 
— conica, Møll. 
— krøyert, Phil. 
Trochus occidentalis, Migh. & Ad. 
Trophon barvicensis, Johnst. 
—  clathratus, Lin. . 
— truncatus, Strøm 
Troschelia berniciensis, King 
Typhlomangilia nivalis, Lovén . 
Ukko osstant, Friele . 
— turtoni, Bean 
Utriculus pertenuis, Migh. 
Velutina lævigata, Pen. 
—  lanigera, Møll. . . . 
—  schneideri, Friele 
—  <zonata, Gould 
Venus casina, Lin. 
— fluctuosa, Gould 
— ovata, Pen.. . . . 
Volumitra grønlandica, Beck. 
Volutopsis grønlandica, Ohemn. 
Waldheimia cranium, O. F. Måll. 
— septigera, Lovén 
NXylophaga dorsalis, Turt. 
Yoldia hyperborea, Lovén 
var. clavatus, G. O. Sars . 
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