of the Fishery Board for Scotland, 22 
Or 
Norway and Sweden as a market for | Octocotyle truncata, (19) 146. 
Scottish-cured herrings, (7) 166. 
Norway, artificial fertilisation of ova in, 
(7) 403. 
Association for the Promotion of 
Norwegian Fisheries, (9) 304. 
bullhead. See Bullhead, Norway. 
—— fish-culture in, (5) 234; (13) 339. 
fisheries of, (6) 304; (7) 402; (9) 
—— fish-hatching in, (7) 403 ; (17) 208. 
409 ; (10) 346; (11) 496; (12) 398; (13) 
34]. 
— haddock. See Haddock, Norway. 
hatching of cod in, (6) 305 ; (8) 374; 
(9) 409. 
-— hatching of flat fish in, (7) 405. 
—— hatching of lobsters in, (7) 405. 
—— lobster. See Nephrops norvegicus. 
—— pout. See Pout, Norway. 
— — rearing of cod in, (7) 404. 
—— scientific fishery work in, (6) 304. 
Norwegian topknot. See Topknot, Nor- 
wegian. 
Notes and memoranda, (8) 351. 
Nothria tubicola, (15) 159. 
Notodelphys agilis, (6) 288; (7) 326; (15) 
148. 
—— allmanni, (6) 288 ; (15) 148. 
prasina, (15) 148; (18) 386. 
Notodromas monacha, (9) 276, 282. 
Notodelphys ceerulea, (7) 326. 
Notopterophorus papilio, (15) 148. 
Notosema, (18) 356. 
Nucula nitida, (15) 125. 
nucleus, (15) 125. 
sulcata, (15) 125. 
tenuis, (15) 125; (20) 503. 
Nudibranchiata, (8) 331; (15) 116. 
Numerical variations of fish at different 
seasons, (6) 36. 
Nummulinide, (7) 311 ; (8) 317; (15) 167. 
Nurse hound. See Dog-fish, larger 
spotted. 
Nutritive value of fresh fish, (5) 221. 
value of pale and dark muscles of 
fish, (5) 225. 
Nyctiphanes, (6) 226, 227, 229, 262 ; (10) 
267 ; (20) 494. 
—— norvegica, (4) 15 
324 ; (8) 330; (15) 
(20) 510. 
—— as herring-food, (4) 123. 
73 (6) 254, 255 5 (7) 
132; (17) 113, 268 ; 
O 
OBSERVATIONS made at trawling stations 
(14) 133. 
— on the life-histories and develop- 
ment of the food and other fishes, (9) 
14, 317. 
Octobothrium alose, (19) 145. 
esmarkvi, (19) 147. 
— harengt, (19) 145. 
—— lanceolatum, (19) 145. 
merlangt, (13) 172; (19) 146. 
palmatum, (19) 149. 
scombri, (19) 146. 
Octocotyle harengi, (19) 145. 
scombri, (19) 146. 
Octodactylus inherens, (19) 149. 
Octopus vulgaris, (15) 114 ; (20) 534. 
Octostoma merlang?, (19) 146. 
scombri, (19) 146. 
Odostomia acuta, (45) 121. 
conspicua, (15) 121. 
—— pallida, (15) 121. 
unobilicaris, (15) 121. 
unidentata, (15) 121. 
@diceros norvegicus, (7) 320. 
parvimanus, (10) 263. 
Offshore fishing grounds, investigations 
of, (9) 21, 388. 
— waters, spawning of fish in, (7) 183. 
work, importance of, (14) 8. 
Oidium morrhue, (6) 205. 
Oikopleura cophocerca, (6) 279 ; (15) 114. 
flabellum, (15) 114. 
Oil-globules, formation of, in eggs of 
fishes, (16) 97. 
Oithona setager, (9) 301 ; (20) 454. 
similis, (15) 148, 305, 306, 307, 308, 
S09} SLO Sy olor: (1G) elie LOO; 
210. 
spinifrons, (4) 150; (6) 238; (20) 
504, 
spinirostris, (6) 238 ; (9) 301. 
Old-wife. See Cantharus lineatus. 
Olsen, Mr O. T., (8) 359; (9) 177, 589. 
Ommastrephes, sp., (3) 67. 
todarus, (6) 264. 
Onchocotyle appendiculata, (19) 149. 
Oncidiwm celticum, (15) 117. 
Oncopterinz, (18) 360. 
One-spotted topknot. 
spotted. 
Oniscus arenarius, (10) 364. 
Onoba striata, (15) 120. 
Onos. See Rockling. 
Opah. See King-fish. 
Operculina ammonoides, (8) 317; (15) 
167. 
incerta, (7) 314, : 
Opercular bones of fishes, lines of growth 
in, (23) 129. 
Ophiactis ballii, (15) 163 ; (20) 312, 319. 
Ophiocamptus brevipes, (13) 249. 
sarsi, (18) 188, 244, 249, 
Ophiocoma minuta, (15) 163. 
nigra, (15) 162; (20) 312, 319, 324. 
punctata, (20) 314. 
Ophioglypha albida, (6) 230. 
Ophiopholis aculeata, (6) 230, (15) 162 ; 
(20) 312, 319, 324. 
Ophiothrix fragilis, (15) 
319, 324. 
pentaphyllum, (6) 230. 
Ophiura affinis, (15) 161. 
albida, (15) 161 ; (20) 814, 319, 324, 
327. 
— ciliaris, (15) 161 ; (20) 313, 314, 319, 
324. 
robusta, (20) 314, 319, 324. 
Oralien asellinus, (18) 1638. 
Orbiculina wniversa, (20) 510. 
Orbis foliacea, (7) 311. 
Orbulina universa, (7) 315; (15) 167. 
Orchestia gammarellus, (6) 246. 
littorea, (6) 246 ; (15) 137 ; (17) 264. 
See Topknot, one- 
162; (20) 313, 
