84 >f. ODHNKR, NORTHERN AND ARCTIC INVERTEBRATES. VI. PROSOBRANCHIA. 2 SEMirROBOSClDIFERA. 



Index. 



The names in parantheses show the genera, under which the species are described. Species with an asterisk (*) 

 are figured. 



Page 



Aerybia H. & A. Adams 1853 7, 9 



*aitmis, Natica (Gmelin), of G. O. Särs 1878 . . 21 



*Alderi, Natica, Forbes 1838 8, 24 



Amanra Möller 1842 6 



Amauropsis Mörch 1857 7, 9 



*anipla, Vehitina insculpta var 11, 59, 81 



Ampullina Lamarok of G. O. Särs 1878 7 



*aperta, Natica, Loven 1846 9, 46 



*arctica, Trivia (Cyprsea), Hiimphrey 1797 . .G, 13 

 aurantiaca, Onchidiopsis, Locard 1897 .... 76 



*bathybii, Natica, Friele 1879 7, 24 



boreahs, Marseniella, Bergh 1886 . . . . 10, 51 



» Natica, Gray 1839 38 



Bulbus Smithii Bro wn 1838 8, 9, 42, 46 



*catena, Lunatia (Cochlea), Da Costa 1778 . . 8, 27 

 *clausa, Natica, Broderip & Sowerby 1829 . . 7, 14 



corys, Onchidiopsis, Balch 1910 76 



*cryptospira, Velutina, Middendorff 1851 . 12, 67 



^Cyprsea eiiropsea Montagu 1808 6, 13 



Cypraeide 5, 6 



*derugata, Velutina velutina var., Becher 1886 11, 60 

 elatior, Natica clausa var., Middendorff 1849 . 2() 



*europsea, Cypraea, Montagu 1808 6, 13 



*expansa, Velutina undata var., G. O. Särs 1878 11, 57 

 *flava, Aerybia (Natica), Gould 1840 .... 9, 46 



» Natica, Goidd 1840 9, 43 



» » Leche 1878 43 



» » Middendorff 1849 43 



*flexilis, Velutina (Helix), Montagu 1808 . . 12, 67 

 *glabra, Marsenina (Oxynoé), Couthouy 1838 10, 51 

 *glaciaHs, Onchidiopsis (Lamellaria), M. Särs 



1851 12, 73 



grandis, Velutina undata var., Mörch 1869*^, Be- 

 cher 1886 58 



*groenlandica, Marsenina, Möller 1842 52 



* » Natica, Möller 1842 8i 31 



* » Onchidiopsis, Bergh 1853 . . 12) 74 

 *haHotoidea, Velutina (Hehx), Fabricius 1780 11, 60 



*heIicoides, Natica, Johnston 1835 9, 44 



*insculijta, Velutina, n. sp 11, 59, 81 



*intermedia, Natica, Philippi 1836 8, 24 



*islandica, Amauropsis (Nerita), Gmelin 1783 9, 44 



immaculata, Natica, Totten 1835 30 



janthostoma, Natica clausa var., Deshayes 1841 21 

 *];T}vigata, Velutina (Helix), Pennant 1777 .11, 60 



Lamellaria Montagu 1811 9, 10 



Lamellariidai 5, 9 



Ijamellariinaj 9 



*lanigera, Velutina, Möller 1842 11, 65 



Page 



*latens, LameUaria (Bulla), MiiUer 1776 . . 10, 49 



*latissima, Onchidiopsis, n. sp 12,75, 81 



Limneria II. & A. Adams 1853 10 



Lunatia Grey 1847 7 



Marsenia Leach 1820 9, 10 



Marseniella Bergh 1886 9, 10 



Marsenina Gray 1850 9, 10 



Marsenininse 9 



Marseniopsis Bergh 1886 9, 79 



*micromphala, Marsenina, Bergh 1853 . . . 51, 52 



*monilifera, Natica, Lamarck 1822 8, 27 



*Montagui, Lunatia (Natica), Forbes 1838 . . 8, 27 



MorviUia Gray 1857 10 



*nana, Lunatia (Natica), Möller 1842 . . . 8, 30 



Natica Adanson 1757 6, 7 



Naticidaj 5, 6 



♦nitida, Lunatia (Nerita), Donovan 1800 . . . 8, 24 



*oblonga, Natica bathybii var., Friele 1886 . . 7, 24 



occlusa, Natica clausa var., Wood 1848 ... 20 



Onchidiopsis Bergh 1853 10, 12 



*pallida, Lunatia (Natica), Broderip & Sowerby 



1829 8, 31 



*perspicua, Lamellaria (Helix), Linné 1758 10, 47 

 *plicatihs, Velutina (Bulla), Miiller 1776 . . 12,67 



Proboscidifera 5 



*prodita, Marsenina (Lamcllaria), Loven 1846 . 52 



*producta, Lamellaria, Leach 1847 . . . . 10, 47 



*pulchella, Natica, Eisso 1826 8, 24 



Rhachiglossa 6 



Rostrifera 5 



*Schneideri, Velutina velutina var., Friele 1886 



11, 60 



Semiproboscidifera 5 



Smithii, Bulbus, Brown 1838 ... 8, 9, 42, 46 



Ta^nioglossa 5 



tennis, Velutina velutina var., Jeffreys 1869 . 64 

 *tenuistriata, Lunatia (Natica), Dautzenberg & 



Fischer 1911 8, 40 



tentaculata, LameUaria, Montagu 1811 10, 47, 49 



Toxiglossa 6 



Trivia Gray 1832 6 



*undata, Velutina, Brown 1838 11, 55 



Velutella Gray 1847 10 



Velutina Fleming 1822 10 



♦velutina, Velutina (Bulla), Miiller 1776 . .11, 60 



Velutinin» 9 



vittata, Natica clavisa var., Jeffreys 1877 .... 21 



zonata, Natica clausa var., Middendorff 1851 . 21 



* » Velutina undata var., Gould 1841 . 11, 55 



