of the Fisher]/ Board for Scotland. 



233 



Protomedeia hirsutimana, (6) 248. 

 Psammobia ferrwnsis, (15) 127. 



tdlinella, (6) 231. 



Psammodiscu8 ocellatus, (18) 357. 

 Psammosyphcera fusca, (S) 314 ; (19) 236, 

 257. 



Psettinse, (18) 351. 



Psettichthys melanosticus, (18) 352. 



Psettodes, (18) 354, 356. 



erumei, (18) 356. 



Pseudanthessius gracilis, (12) 260. 



liber, (12) 258 ; (15) 154 ; (20) 470. 



sauragei, (12) 260. 



thorettii, (12) 259 ; (18) 399. 



Pseudione affinis, (17) 266 ; (18) 403. 



cremdata, (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, &c. 



pulchella, (20) 480. 



similis, (19) 274; (20) 480; (22) 



243, 258. 



Pseudocyclopia caudata, (12) 236 ; (16) 



267 ; (20) 451. 



crassicornis, (10) 246 ; (16) 267. 



giesbrechti, (23) 141. 



minor, (10) 247. 



Pseudocy clops crassiremis, (12) 237. 

 obtusatus, (8) 317; (20) 454; (21) 



112. 



Pseudocythere caudata, (7) 319 ; (15) 

 145. 



Pseudolaophonte aculeata, (18) 393. 



spinosa, (18) 393. 



Psetidomesochra longifurcata, (10) 449, 

 462. 



Pseudophcenna typica, (21) 112. 

 Pseudopsyllus elongatus, (20) 449, 471 ; 



(21) 130. 

 Pseudorhombus, (18) 354, 356. 



russellii, (18) 356. 



Pseudosiriella frontalis, (4) 163. 

 Pseudotachidius coronatus, (16) 267 ; (17) 



256 ; (20) 461. 

 Pseudotanais forcipatus, (6) 251 ; (19) 



270. 



Pseudothalestris major, (13) 170 ; (19) 

 250. 



pygmcea, (13) 170. 



Pseudowestwoodia andreivi, (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 morrhua?, (19) 149. 



palmata, (19) 149. 



Pterygocera armaria, (10) 264. 

 Ptilocheirus hirsutimanus, (6) 248. 



Pullin Island Biological Station, work of, 

 (7) 387. 



Pulvimdina auricula, (16) 277. 

 Puncture.Ua noachina, (15) 122. 

 Purpura lapillus, (7) 337 ; (15) 118. 

 Pyrophacus horologium, (15) 298, 302. 



Q 



Quinquelocidina agghdinans, (7) 313. 



bicornis, (7) 313. 



femssacii, (7) 313. 



secans, (7) 313. 



Pv 



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. 



b/anda, (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 Fork beard, lesser. 



trifurcatus. See Forkbeard, lesser. 



Rate of growth of fishes. See Growth. 



of movement of plaice, (21) 42. 



Ramiduria, (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, tfee 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 (Trygon pastinaca), from 



Moray Firth, (22) 283. 

 parasites of, (22) 275, 276, 278, 



279. 



thornback (Raia clavata), (15) 113 ; 



(18) 293. 



food of, (20) 487, 535. 



migrations of, (11) 191. 



