of the Fishery Board for Scotland. 
Protomedeia hirsutimana, (6) 248. 
Psammobia ferrensis, (15) 127. 
tellinella, (6) 231. 
Psammodiscus ocellatus, (18) 357. 
Psammosphera fusca, (8) 314; (19) 236, 
257. 
Psettine, (18) 351. 
Psettichthys melanosticus, (18) 352. 
Psettodes, (18) 354, 356. 
erumet, (18) 356. 
Pseudanthessius gracilis, (12) 260. 
liber, (12) 258 ; (15) 154; (20) 470. 
sauvager, (12) 260. 
thorellii, (12) 259 ; (18) 399. 
Pseudione affinis, (17) 266 ; (18) 403. 
crenulata, (17) 266. 
hyndmanni, (15) 136. 
Pseudocalanus as herring-food, (4) 125. 
armatus, (15) 146; (16) 264; (17) 
248 ; (20) 451. 
elongatus, (4) 148; (6) 237; (10) 
246 ; (15) 146, 305, 306, &c. ; (16) 177, 
188, 210; (20) 450, 494, 503, &c. 
Pseudocaligus brevipedis, (20) 291; (23) 
110. 
Pseudocuma bistriata, (4) 165. 
cercaria, (4) 165 ; (6) 253 ; (15) 134 ; 
(16) 167, 209 ; (19) 236 ; (20) 491, 503, | 
510, 513, &e. 
pulchella, (20) 480. 
simulis, (19) 274; 
243, 258. 
Pseudocyclopia caudata, (12) 236; (16) 
267 ; (20) 451. 
crassicornis, (10) 246 ; (16) 267. 
giesbrechti, (23) 141. 
minor, (10) 247. 
Pseudocyclops crassiremis, (12) 237. 
obtusatus, (8) 317; (20) 454; (21) 
112. 
Pseudocythere caudata, (7) 
145. 
Pseudolaophonte aculeata, (18) 393. 
spinosa, (18) 393. 
Pseudomesochra longifurcata, (10) 449, 
462. 
Pseudophenna typica, (21) 112. 
Pseudopsyllus elongatus, (20) 449, 471 ; 
(21) 130. 
Pseudorhombus, (18) 354, 356. 
a russelliz, (18) 356. 
Pseudosiriella frontalis, (4) 163. 
Pseudotachidius coronatus, (16) 267 ; (17) 
256 ; (20) 461. 
(20) 480; (22) 
SLi (Ld) 
Pseudotanais forcipatus, (6) 251; (19) 
270. 
Pseudothalestris major, (13) 170; (19) 
250. 
pygmea, (13) 170. 
Pseudowestwoodia andrewt, (12) 257. 
Psolus phantapus, (15) 162; (20) 307, 
319, 324. 
change of colour in, (4) 216. 
Psyllocamptus fairliensis, (17) 254. 
Pterinopsyllus insignis, (12) 238; (19) 
240 ; (20) 461. 
Pterocotyle morrhue, (19) 149. 
palmata, (19) 149. 
Pterygocera arenaria, (10) 264. 
Ptilocheirus hirsutimanus, (6) 248. 
233 
Puffin Island Biological Station, work of, 
(7) 387. 
Pulvinulina auricula, (16) 277. 
Puncturella noachina, (15) 122. 
Purpura lapillus, (7) 337 ; (15) 118. 
Pyrophacus horologium, (15) 298, 302. 
Q 
Quinqueloculina agglutinans, (7) 313. 
bicornis, (7) 313. 
—— ferussacit, (7) 313. 
secans, (7) 313. 
R 
RACE-VARIABILITY, (18) 220. 
Races of herring, (5), 295 ; (17) 275. 
Rae, Dr J., (9) 269. 
Raeffele on the eggs of fishes in relation 
to trawling, (7) 401. 
Raia. See Skate, ray. 
batis. See Skate, grey. 
blanda, (13) 332. 
circularis. See Ray, cuckoo. 
—  clavata. See Ray, thornback. 
fullonica. See Ray, Fuller’s. 
macrorhynchus. See Skate, flapper. 
maculata. See Ray, homelyn. 
oxyrhynchus. See Long or sharp- 
nosed skate. 
radiata. See Ray, starry. 
Raniceps raninus. See Forkbeard, lesser. 
trifurcatus. See Forkbeard, lesser. 
Rate of growth of fishes. See Growth. 
of movement of plaice, (21) 42. 
Ramuluria, (18) 356. 
Ray, cuckoo (Raia circularis), (6) 277 ; 
(15) 113 ; (18) 293. 
food of, (20) 536 ; (21) 224. 
parasites of, (18) 170 ; (19) 130. 
proportion of sexes in, (21) 
230. 
electric. See Torpedo. 
—— Fuller’s (Raia fullonica), (6) 277 ; 
(18) 292. 
—— —— abnormal specimen of, (4) 210. 
food of, (20) 535. 
—— —— parasite of, (18) 174. 
proportion of sexes in, (21) 230, 
homelyn (Raia maculata), (15) 113; 
(18) 293. 
parasites of, (19) 130. 
sandy. See Ray, cuckoo. 
shagreen. See Ray, Fuller’s. 
—— spotted. See Ray, homelyn. 
starry (Raia radiata), (6) 278. 
food of, (20) 487, 536. 
growth of, (21) 231. 
parasites of, (20) 295, 299. 
—— -—— proportion of sexes in, (21) 230. 
size at maturity, (10) 238. 
sting (Zrygon pastinaca), 
Moray Firth, (22) 283. 
parasites of, (22) 275, 276, 278, 
from 
279. 
— thornback (Raia clavata), (15) 113; 
(18) 293. 
food of, (20) 487, 535. 
—— —— migrations of, (11) 191. 
