29' 



Tritonium tenebvosum, Hancock 197. 



— tenerum, Beck 212. 



— Terræ Novæ, Beck 196. 



— turritum, M. Sars 179. 



— undatum, Fabricius 199. 



— — Linné 193. 



— undulatum, Møller 195. 



— viridulum, Fabricius 166. 

 Tritonofusus Krøyeri, Møller 184, 



212. 

 — rubellus, Beck 183. 



Trochus cinerarius , Fabricius 126, 



129. 



— cinereus, Couthouy 129. 



— divaricatus, Fabricius 228. 



— grønlandicus, Chemnitz 126. 



— helicinus, Fabricius 122. 



— occidentalis, Mighels et 



Adams 132. 



— olivaceus, Brown 125. 



— striatellus, Fabricius 227. 



— umbilicalis, ßroderip et 



SoAverby 127. 



— Vahli, Møller 124. 

 Trophon Banffli, Donovan 176. 



— clathratum, Fabricius 175. 



— — — var. 

 truncata, Strøm 175. 



— clathratus, Linné 176. 



— — — var. Gun- 



neri, Loven 177. 



— Fabricii, (Beck) Møller 174. 



— truncatus, Strøm 175. 

 Truncatella atomus, Philipp! 220. 

 Turbo albulus, Fabricius 234. 



— cinereus, Couthouy 129. 



— clathrus groenlandicus, Chem- 



nitz 233. 



— crassior, Montagu 228. 



— helicinus, Phipps 122. 



— olivaceus, Brown 124. 



— palliatus, Say 230. 



— planorbis, Fabricius 221. 



— rudis, Maton 231. 



— vinctus, Montagu 229. 

 Turritella acicula, Stimpson 219. 



— ? costulata, Møller 216. 



Turritella erosa, Couthouy 218. 



— Eschrichtii, Middendorff 



219. 



— lactea. Møller 217. 



— polaris, Beck 218. 



— — Møller 218. 



— reticulata, Mighels et Adams 



216, 219. 

 Turritellopsis acicula, Stimpson 219. 

 Turtonia minuta, Fabricius 72. 



Unio groenlandica, Férussac 268. 



— testudinarius 268. 

 Utriculopsis vitrea, M. Sars 236. 

 Utriculus canaliculatus, Gould 239. 



— Gouldil, Couthouy 239. 



— lima, Brown 243. 



— « obtusus, Montagu 239. 



— pertenuis, Mighels 238. 



— — — var. tur- 



rita, Møller 238. 



— semen, Reeve 238, 239 



— substriatus, Jeffreys 235. 



— turritus. Møller 238, 239. 



Velutella cryptospira, Midd. 135. 



— flexilis, Montagu 135. 

 Velutina canaliculata. Beck 135. 



— capuloides, Beck 134. 



— (Velutella) flexilis, Montagu 



135. 



— haliotoides, Fabricius 133. 



— laevigata. Pennant 133, 135. 



— lanigera, Møller 134. 



— plicatilis 135. 



— (Morvillia) zonata, Gould 135. 



— — — — var. 



grandis, Mørch 135. 



Venus astartoides, Beck 82. 



— borealis, Chemnitz 61. 



— compressa, Linné 66. 



— fluctuosa, Gould 81. 



— fragilis, Fabricius 83. 



— islandica, Fabricius 55, 61. 

 — • — Linné 61. 



— minuta, Fabricius 72. 

 Vitrina angelicae, (Beck) Møller 258, 



266. 



