256 
Fanroer, cod spawning at, 33. 
—— grounds, small _ percentage of 
unmarketable fish at, 33. 
—— trawling investigations at, 31-33, 
58-64. 
Fishes, parasites of, 108. 
—--— young, destruction of, by sprat and 
sparling fishermen, 156. 
Fletcher, John, 168. 
Flounder (Pleuronectes flesus), parasite of, 
108. 
Flounders, spawning of, in 
Firth, 20. 
Food of young lobsters, 69, 70. 
Formaline, decalcifying action of, 133. 
Fry from hatchery, liberation of, 124. 
Fryer, C. E., 168. 
Fullarton, Dr J. H., 168. 
Fulton, Dr T. Wemyss, 168, 169, 171. 
Dornoch 
GADID&, zones of growth in the skeletal 
structures of, 125. 
Gadus luscus. See Bib. 
General Index to the Scientific Reports, 
166. 
Gibson, Dr John, 171. 
Gray, David, 171. 
Greenfield, Professor W. 8., 171. 
Grounds of Tay sprat fishery, 163. 
Growth of lobster, 85, 95. 
—— zones of, in the skeletal structures of 
fishes, 125. 
Gurnard, grey (Trigla gurnardus), para- 
sites of, 115, 116. 
—— streaked (T'rig/a lineata), parasite 
of, 115. 
Happock (Gadus ceglefinus), parasite of, 
108. 
Halliburton, Dr W. D., 171. 
Hard lobsters, 100. 
Hardening of the shell in lobster, 93. 
Harpacticus uniremis, 147. 
Hatchery at Bay of Nigg, operations at, 
120. 
—— —-- scarcity of adult plaice for, 121. 
Hatching of crabs, 154. 
—— of lobster, 65. 
—— operations, expense of, 121. 
Heincke, Professor Friedrich, 129, 171. 
Herbertson, Dr Andrew J., 171. 
Herring, lines of growth in otoliths of, 
127. 
Herrings, proportion of young, taken in 
sprat fishing, 157. 
Homarus vulgaris. See Lobster. 
Hoyle, Dr William E., 171. 
IcutTHyoLocicaL Notes, 251. 
Index to Scientific Reports, 166. 
JENKINS, Dr J. T., 127. 
Kye, Dr Harry M., 171. 
Labrax lupus. See Basse. 
Labrus bergylta. See Wrasse, ballan. 
Lamna cornubica. See Shark, porbeagle. 
Laophonte longiremis, 145. 
Larval stages of lobster, 69. 
Lawrence, George, 172. 
Part I11.— Twenty-third Annual Report 
Lepeophtheirus sturionis, 110. 
Leptocephalus morrisii, 251. 
—— punctatus, 251. 
Lernea lusci, 113. 
Lesteira lumpi, 113. 
Liberation of fry from hatchery, 124. 
Lines of growth in opercular bones, 129. 
—— —-- in otoliths, 126, 128. 
—— in pectoral girdle, 131. 
—— —— in scales of cod, 130. 
—— — — in scales of fishes, 125, 129. 
—— ——- in scales of plaice, 125, 129. 
on in skeletal structures of fishes, 
—— —-— in vertebrz of fishes, 130. 
Ling (Molua molva), parasite of, 108. 
Lobster (Homarus vulgaris), appendages 
of the first zoéa, 74. 
—— behaviour of, 95. 
—— body fluid of, 98. 
—— cast, shell of, 94. 
—— casting of, 89. 
—— contribution to life-history of, 65. 
—— conveyance of, 65, 68. 
description of larvee of, 71. 
—— effect of cold on, 72, 98. 
—— effect of the exposure of, to strong 
light, 98. 
—— eggs of, 101, 102. 
—— external eggs of, 102. 
— — food of the zoéa, 78. 
—— forms resulting from the casting of 
. 20éa, 83. 
—— fry, stages in life of, 68, 69. 
—— growth of, 85, 95. 
—— hard, 100: 
—— hardening of the shell in, 93. 
—— hatching of, 65. 
—— increase in size of, on casting, 95. 
—-— indications of approaching moulting 
in, 93. 
— — larval, description of, 67. 
—— male, description of, 89. 
—— measurements of, 103. 
~-— megalops stage of, 68. 
—— ‘‘mysis” stage of, 69. 
—— ovaries of, 98. 
—--— protozoéa stage of, 68. 
—— ripe egg of, 102. 
senses of the, 97. 
—— size of, before and after casting, 92. 
—— soft, characters of, 94. 
—— spawning of, 100, 101. 
—— variation of the megalops of, 83. 
—— young, copepoda as food of, 67. 
a inline, 8) (70. 
—— —— vitality of, 67. 
—~—— zoéa stage of, 67. 
Longipedia coronata, 143. 
Lossiemouth, trawling investigations off, 
20, 24, 41, 46. 
Lumpsucker (Cyclopterus lumpus), para- 
site of, 108. 
Lybster, trawling investigations off, 15, 
24, 34, 35, 36, 47. 
Lythe. Sce Pollack. 
M‘Inrosu, Professor W. C., 172. 
Maclagan, Nellie, 172. 
Maitland, Sir J. R. G., Bart., 168, 172. 
