194 



Part HI. — Twenty-third Annual Report 



Delavalia amula, (11) 204 ; (17) 254 ; (21) 

 116. 



giesbrechti, (17) 254. 



mimica, (15) 150; (17) 254. 



minutissima, (21) 116. 



palustris, (11) 203, 205 ; (15) 317. 



reflexa, (11)204; (12)244; (21)116. 



robusta, (11) 204 ; (15) 150 ; (21) 116. 



Delphinus. See Dolphin. 

 Dendrophrya erecta, (8) 317 ; (16) 274. 



radiata, (8) 317 ; (16) 274. 



Denmark, administration of fisheries in. 



(7) 406. 



as a market for Scottish-cured 



herrings, (7) 166. 



biological station in, (8) 374. 



depredations of seals in, (9) 412. 



Denmark, fisheries of, (12) 399 ; (13) 340. 



fishery regulations in, (9) 411. 



Fishery Society of, (6) 305 ; (7) 406. 



fishery work in, (6) 305 ; (7) 405 ; 



(8) 374; (9)410; (10)347; (11) 499; 



(12) 399 ; (13) 342. 



legal sizes for immature fishes in, 



(8) 374. 



loans for boat-building in, (6) 305. 



nature of scientific fishery investiga- 

 tions in, (9) 412. 



oyster fishery of, (7) 406. 



plaice fishery in Cattegat, (7) 407. 



regulations regarding immature fish, 



(9) 411. 



seine-trawling for plaice in, (7) 406. 



statistics of fisheries of, (9) 411. 



steam-trawling in, (9) 411. 



survey of fisheries of, (9) 410. 



system of insurance for fishing boats, 



(9) 412. 



trawling in, (7) 406. 



Density observations, (12) 339. 



report on, (13) 302. 



of water, effect of wind on, (15) 



264. 



variations in, of water of Loch Fyne, 



(15) 263. 

 Dentalina legumen, (7) 314. 

 Dentalium entalis, (15) 123. 

 Dentex vidgaris, spawning period of, (4) 



244. 



Dentronotus frondosus, (15) 117. 



Depletion of fishery grounds, (10) 8. 



Dercothat punctatus, (6) 249. 



Dermatomyzon gibberum, (12) 260. 



nigripes, (15) 154 ; (16) 177, 190, 



210 ; (17) 262. 



Development and life-history of the food- 

 fishes, (6) 265 ; (10) 20. 



of brain in lesser sand-eel, (13) 15, 



276. 



of Carcinus mamas, (21) 142. 



of common mussel, (4) 218 ; (5) 247. 



of eggs of fishes, duration of, (15) 



370. 



influence of temperature on, 



(13) 15, 147. 



of food fishes, (11) 18, 239 ; (12) 19, 



218 ; (13) 15, 147 ; (14) 171. 



of herring, (4) 31. 



of ovary, oviduct, &c, in certain 



osseus fishes, (6) 281. 



Development of pollack, (14) 171. 

 Dexamine spinosa, (6) 247 ; (16) 140. 

 sp., (16) 210. 



thea, (14) 160 ; (15) 140 ; (19) 262. 



vedlomensis, (7) 321. 



Diaphana hyalina, (15) 115. 

 Diaphanosoma brachyurum, (17) 177, 179, 

 184, 191. 



DiaiJtomus castor, (8) 336 ; (16) 259, 260. 



gracilis, (9) 272, 276, 279, 282, 288 ; 



(11) 223 ; (12) 286 ; (13) 249 ; (14) 168 ; 

 (15)320; (17U38, 139, 143, 144,148, 

 150, 153, 155, 157, 158, 159, 163, 164, 

 167, 168, 171, 176, 177, 179, 181, 182, 

 184. 



hircus, (16) 249, 251 ; (17) 148, 177, 



179, 181, 182, 183, 188. 

 laciniatus, (16) 249 ; (17) 170, 171, 



183, 187. 



serricornis, (12) 288 ; (13) 188, 244 ; 



(14) 239. 



icierzejskii, (15) 316, 319, 320, 331, 



332 ; (16) 249, 257, 259 ; (17) 155, 156, 

 183, 188. 



Dias longiremis, (4) 148; (6) 237 ; (9) 287, 



288, 300 ; (10) 244. 



as herring-food, (4) 126. 



Diastopora obelia, (15) 157. 

 Diastylis biplicata, (15) 134. 



cornutus, (19) 236, 274 ; (20) 510. 



lucifera, (6) 253 ; (19) 274 ; (20) 480, 



516, 523. 



rathkii, (6) 253 ; (15) 134 ; (20) 522. 



rostrata, (20) 479, 516 ; (22) 257. 



rugosa, (4) 165 ; (6) 253 ; (8) 329, 



330 ; (15) 134 ; (16) 167, 209 ; (20) 510. 



strigata, (4) 165. 



— — tumida, (19) 274 ; (20) 480. 

 Diastyloides biplicata, (20) 510. 

 Diastylopsis resima, (19) 236, 274. 

 Diatoma tenue. (9) 274. 



vulgare, (9) 274. 



Diatoms as food of copepods, (15) 216. 



as food of fishes, (15) 216. 



as food of marine animals, (15) 215. 



as food of young fishes, (16) 244. 



discolouration of sea b} T , (15) 216. 



distribution of, (15) 212. 



from Faeroe-Shetland Channel, (15) 



297. 



marine, (15) 15. 



reproduction in, (15) 217. 



seasonal abundance of, (15) 212. 



vertical distribution of, (15) 213. 



Dichelestium sturionis, (23) 111. 

 Dickson, Dr. H. N., (12)21, 336; (15) 280. 

 Dictyocha filmla, (15) 302. 



speculum, (15) 302. 



Didymus-plankton, characters of, (15) 302. 

 Difflugia acuminata, (14) 243. 



corona, (9) 274. 



globularia, (9) 274. 



marsupiformis, (9) 274. 



pyriformis, (9) 274. 



Digestion in fishes, (2) 31 ; (22) 170. 

 Digestive organs, chemistry of, (2) 31. 



histology of, (2) 31. 



Digestibility of fresh fish, (5) 221. 



of Whitefish {Coregonus clupei- 



formis) (5) 228. 



