of the Fishery Board for Scotland. 
Megrim, fecundity of, (9) 263. 
—— food of, (7) 237, 240; (8) 254, 256; 
(20) 523. 
— mature and immature, (8) 172. 
proportion of males to females, (8) 
349 ; (10) 239. 
size at maturity, (10) 238. 
——- spawning of, (7) 192. 
Melita dentata, (14) 160. 
—— gladiosa, (6) 247. 
—— obtusata, (6) 247; (15) 140; (20) 
501, 510. 
—— proxima, (6) 247. 
Melosira orichalcea, (9) 274. 
—— varians, (9) 274. 
Melphidippa spinosa, (10) 264. 
Melphidippella macera, (16) 170, 177, 
210 ; (17) 265; (19) 263. 
Melville, Mr John, (9) 177, 343. 
Membrantpora flemingii, (15) 156. 
—— pilosa, (15) 156. 
Meridion circulare, (9) 274. 
Merluccius vulgaris. See Hake. 
Merry-sole. See Lemon dab. 
Mesh of trawl-net, (8) 182. 
—— —— experiments on influence of, 
(12) 306 ; (19) 62. 
—— —— influence of size of, on fish 
caught, (19) 62. 
—— —— relation between, and the fish 
captured, (12) 306; (19) 62. 
Mesochra lilljeborgii, (6) 239; (11) 228, 
——- macintosht, (13) 167 ; (20) 461. 
—— propinqua, (14) 162. 
—— robertsoni, (11) 228, 229. 
—— spinicauda, (13) 167; (18) 391. 
Methods of fishing for herrings in Clyde, 
(12) 18. 
—— of fishing in relation to statistics, 
(20) 79. 
—— of rearing fish larvee, (15) 177. 
Metopa alderi, (7) 319; (16) 170, 177, 
210 ; (20) 516, 527. 
—— borealis, (19) 260 ; (22) 243, 257, 
—— bruzelii, (14) 159. 
—— nasuta, (14) 159. 
—— norvegica, (19) 261. 
ra pollexiana, (6) 246; (17) 265; (20) 
78. 
——- propinqua, (12) 263. 
—— pusilla, (20) 478, 516. 
—— robusta, (17) 265. 
—— rubrovittata, (19) 260 ; (20) 510, 527. 
Metopella nasuta, (19) 261 ; (20) 497, 510. 
Metopina robusta, (19) 236, 261. 
oo armaia, (4) 148 ; (9) 300; (15) 
147. 
—— as herring-food, (4) 126. 
—— hibernica. (15) 146, 307, 308, 309, 
310, 311, 314; (16) 177, 189, 210; (17) 
251, 270. 
—— longa, (20) 454. 
—— lucens, (18) 385 ; (19) 239 ; (20) 454, 
511, 513, 517, 532; (21) 113. 
M icrochirus minutus, (18) 359. 
variegata, (18) 359. 
Micrococcus albus translucens, (6) 208. 
—— calyciformis, (6) 209. 
——- rotundus magnus, (6) 210. 
P 
221 
Micrococcus spongiosus, (6) 209. 
Microcotyle donovani, (23). 
labracis, (23) 117. 
Microcrustacea from Clyde and Moray 
Firth, (17) 248. 
Microdeutopus anomalus, (15) 140. 
damnoniensis, (15) 140. 
Microjassa cumbrensis, (19) 265. 
Microniscus calani, (15) 172, 309, 311. 
Micro-organisms, determination of num- 
ber in water, (4) 178. 
—— inriver-water, (3) 73; (4) 1763; (5) 
331. 
in river-water, methods of detect- 
ing, (3) 73. 
Microporella impressa, (15) 156. 
Microprotopus maculatus, (14) 161; (18) 
402 ; (20) 527. 
Microstella atlantica, (9) 301. 
Microstomus (18) 353. 
Midwater net, description of, (5) 356. 
Migrations of brill, (11) 189. 
—— of cod, (11) 189; (15) 375. 
—-- of dab, (11) 189. 
— of edible crab, (18) 119, 125; 
135. 
—— —— relation of, to temperature, 
(18) 124. 
of fishes, (10) 19. 
in relation to currents, 
(22) 
375. 
value of statistics in connec- 
tion with, (11) 16, 176; (21) 38. 
of grey gurnard, (17) 210. 
adults and immature together 
(15) 
(17) 228. 
(17) 222. 
of grey skate, (11) 191. 
of gurnard, relation of, to changes 
in temperature, (17) 216. ra 
of herring, (10) 173; (11) 191; (17). 
286. 
of immature gurnards, (17) 227. 
of lemon sole, (11) 187. 
— of plaice, (11) 175 ; (15) 375. 
in relation to maturity, (8) 
in relation to reproducticn 
168. 
— of thornback ray, (11) 191. 
—— of turbot, (11) 189. 
Migratory movements of sea-fishes, (8) 
14, 353. 
Miliolina agglutinans, (7) 313; (8) 313; 
(9) 288 ; (15) 165. 
—— auberiana, (16) 274. 
— bicornis, (7) 313 ; (16) 274. 
contorta, (15) 165. 
—— ferussacit, (7) 313; (15) 165. 
—— fusca, (8) 313; (16) 274. 
— labiosa, (16) 274. 
-— oblonga, (7) 312; (16) 274. 
secans, (7) 312; (15) 165. 
—— seminulum, (7) 312; (15) 165; (20) 
497, 510, 527. 
subrotunda, (9) 288 ; (15) 165. 
tricarinata, (8) 313; (15) 165. 
trigonula, (7) 312; (8) 313; (15) 
165. 
—— venusta, (16) 274. 
Miliolites ringens, (7) 312. 
