413 



Natica clausa, 159. 

 consolidata^ 160. 

 cornea^ 156. 

 fiava^ 155. 

 grønlandica, 158. 

 helicina, 157. 

 helicoides, 156. 

 intermedia, 157. 

 islandica, 156. 

 Montagui, 157. 

 ?jana, 159. 

 nitida, 157. 

 pulchella, 157, 

 septentrionalis, 159. 

 Naticidæ, 154. 

 Neæra abbreviata, 89. 

 arctica, 85. 

 cuspidata, 86. 

 glacialis, 88. 

 jugosa, 88. 

 lamellosa, 88. 

 obesa, 86. 

 rostrata, 89. 

 subtorta, 87. 

 vitrea, 89. 

 Neomenia, 324. 



carinata, 325. 

 Neomeniadæ, 324. 

 Neptunea, 266. 

 antiqva, 267. 

 despecta, 267. 

 Turtoni, 269. 

 Neptunidæ, 266. 

 Nicania Banksii, 51. 



striata, 51. 

 Nucula corticata, 34. 



delpbinodonta, 34. 

 expansa, 33. 

 inflaia, 34. 

 nucleus, 32. 

 ■ tenuis, 33. 



Nucula tumidula, 33. 

 Nuculi dæ, 32. 



Nudibranchiata, 304. 



0. 



Octocera, 338. 



Octopodidæ. 338. 

 Octopus, 338. 



Bairdii, 339. 

 Odontoglossa, 251. 

 Odostomia, 201. 

 acuta, 202. 

 clavula, 207. 

 crossa^ 203. 

 eulrmoides, 203. 

 eximia, 199. 

 insculpta^ 204. 

 inter stiiicta, 200. 

 pallida, 203. 

 rw/a, 199. 

 ^czZtø, 208. 

 spiralis, 200. 

 turgida, 202. 

 turrita, 203. 

 unidentata, 201. 

 Omalaxis, 213. 



supranitida, 214. 

 Ommat ostrepb es, 333. 



todarus, 334. 

 Onchi diopsis , 153. 

 glacialis, 153. 

 grønlaiidica, 153. 

 Onoba, 171. 



aculeus, 172. 

 proxima, 173. 

 striata, 172. 

 Onyclioglossa, 118. 

 Onychotheutis, 335. 

 amoena^ 336. 

 Bergli, 335. 



