194 
Delavalia wmula, (11) 204; (17) 254; (21) 
116. 
—— giesbrechti, (17) 254. 
—— mimica, (15) 150; (17) 254. 
—— minutissima, (21) 116. 
—— palustris, (11) 203, 205 ; 
—— reflewa, (11) 204; (12) 244; 
-—— robusta, (11) 204 ; (15) 150 ; 
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 
herrings, (7) 166. 
—— biological station in, (8) 374. 
depredations of seals i in, (9) 412. 
Denmark, fisheries of, (12) 399 ; (13) 340. 
aa fishery regulations i 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; (15) 342. 
(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 vulgaris, spawning period of, (4) 
244, 
Dentronotus frondosus, (15) 117. 
Depletion of fishery grounds, (1 
Dercothe punctatus, (6) 249. 
Dermatomyzon gibberum, (12) 260. 
nigripes, (15) 154; (16) 177, 190, 
210; (17) 262. 
Dayeloneene and life-history of the food- 
fishes, (6) 265 ; (10) 20. 
of brain in lesser sand-eel, (13) 15, 
276. 
of Carcinus meenas, (21) 142. 
— of common mussel, (4) 218 ; (5) 247. 
—— of eggs of fishes, duration of, (15) 
370. 
(15) 317. 
(21) 116. 
(21) 116. 
Scottish-cured 
0) 8. 
influence of temperature on, 
(13) 15, 147. 
—- of food fishes, (11) 18, 239 ; 
218 ; (18) 15, 1473 (14) 171. 
—— of herring, (4) 31. 
—— of ovary, oviduct, &c., in certain 
osseus fishes, (6) 281. 
(12) 19, 
Part L111 —Twenty-third Annual eport 
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 hijalina, (15) 115. 
Diaphanosoma brachyurwm, (17) 177, 179, 
184, 191. 
Diaptomus castor, (8) 336 ; (16) 259, 260. 
gracilis, (9) 272, 276, 279, 282, 288 ; 
(11) 223; (12) 286 ; (13) 249; (14) 168; 
(15) 320; (17) 138, 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. 
(17) Li0saaae 
(13) 188, 244 ; 
—— laciniatus, (16) 249 ; 
183, 187. 
—-— serricornis, (12) 288 ; 
(14) 239. 
—— wierzejskii, (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 biplieuta, (15) 134. 
——- cornutus, (19) 236, 274 ; (20) 510. 
—— lucifera, (6) 253 ; (19) O74 ; ; (20) 480, 
516, 523. 
—— rathkir, (6) 253; (15) 134; 
—— rostrata, (20) 479, 5163 (22 
— rugosa, (4) 165; (6) 253 ; (8) 329, 
330 ; (15) 134 ; (16) "167, 209 ; (20) 510. 
strigata, (4) "165. 
—— tumida, (19) 274; (20) 
Diastyloides biplicata, (20) 510. 
Diastylopsis resima, (19) 236, 
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 by, (15) 216. 
—— distribution of, (15) 212. 
—— from Faerde-Shetland Channel, (15) 
297. 
marine, (15) 15. 
—— reproduction in, (15) 217. 
—— seasonal abundance of, (15) 212. 
—— vertical distribution of, (15) 213. 
Dichelestium stwrionis, (23) 111. 
Dickson, Dr. H. N., (12) 21, 336; (15) 280. 
Dictyocha fibula, (15) 302. 
—— speculum, (15) 302. 
Didymus-plankton, characters of, (15) 302. 
Diffiugia acuminata, (14) 243. 
—— corona, (9) 274. 
—— globularia, (9) 274. 
—— marsupiformis, (9) 274. 
—— pyriformis, (9) 274. 
Digestion in fishes, (2) 31 ; (22) A 
Digestive organs, chemistry of, (2) 3 
histology of, (2) 31. 
Digestibility of fresh fish, (5) 221. 
of Whitefish (Coregonus 
Sormis) (5) 228. 
274. 
clupei- 
