418 



Trophon Mørchii, 220. 



scalariformis, 247. 



truncatus, 246. 

 Turbonilla, 198. 



oscitans 203. 



rufa, 199. 

 Turridæ, 217. 

 Turritella, 185. 



ac/ctda, 186. 



communis, 185. 



terebra, 185. 



tricarinata^ 185. 



uvgulina, 185. 

 Turritellidæ, 185. 

 Turritellopsis, 186. 



acicula, 186. 

 Typhlomangelia, 241. 



nivalis, 241. 



u. 



Ungulinidæ, 63. 

 Utriculopsis vitrea, 290, 298. 

 Utriculus, 285. 



conulus, 2S7. 



eæpansus, 289. 



globoszts, 290. 



hyalhius, 289. 



nitidulus, 286. 



obtusus, 288. 



obtusus, 349. 



pertenuis, 287. 



truncatulus, 285. 



umbilicatus, 286. 



veritrosus, 302. 



V. 



Velutella, 148. 



cryptospira, 149. 



flexilis, 148, 

 Velutina, 146. 



cryptospira, 149. 



flexilis, 148. 



Velutina haliotoidea, 146. 



lævigata, 146. 



lanigera, 146. 



plicatilis^ 148. 



undata, 147. 



zoiiata, 147. 

 Velutinidæ, 146. 



Veneracea, 55. 



Ven e ridæ, 55. 

 Venus casina, 55. 



gallina, 55. 



miliaris, 6 5 . 



ovata, 56. 



siriatula, 55. 

 Vermiculus crassus, 326. 

 Volutidæ, 243. 

 Volut oraitra, 244. 



grønlandica, 244. 

 Volutopsis, 268. 



norvegica, 268. 

 Volvaria pellucida, 285. 



W. 



Waldheiraia cranium, 10. 

 septata, 11. 

 septigera, 11. 



X. 



■ Xylophaga dorsalis, 98. 



Y. 



Yoldia abyssicola, 39, 41. 

 arctiea, 37, 40. 

 friqida. 39. 

 gibbosa^ 39. 

 intermedia, 38. 

 lenticula, 40. 

 limatula, 40. 

 lucida, 37. 

 nana, 39. 

 oblusa^ 41. 

 portlandica, 37. 

 pygmæa, 38. 

 siliqva, 37. 

 tenuis, 38. 



z. 



Zirphæa crispata, 97, 

 Ztzyphinus, 141. 



