Polyodon folium, ventral fin of, x. 457. 
Polyphasia merulina, viii. 54. 
Polyprion cernium, i. 174, 200. 
Polypterus bichir, x. 439, 474, 484. 
, dorsal, ventral, and anal fins of, x. 458. 
Polyptychus andosa, ix, 584. 
basalis, ix. 584. 
dentatus, ix. 547, 583, 584, 643. 
grayit, ix. 584. 
juglandis, ix. 590. 
— mimose, ix. 584. 
populi, ix. 589. 
—— queretis, ix. 583. 
subjectus, ix. 584. 
timesius, ix. 584. 
Polystoma pinguicola, i. 394. 
venarum, 1. 394. 
Pomacanthodes zonipectus, vi. 383. 
Pomacanthus paru, yi. 386. 
zonipectus, vi. 386, 419. 
rondeletii, iti. 7. 
Pomacentrus analigutta, vi. 446. 
bairdii, vi. 445, 446. 
Jflavilatus, yi. 446. 
leucostictus, vi. 390. 
rectifrenum, Vi. 390, 445, 446, 
Pomatomus telescopus, ii. 173. 
Pomatoprion bairdii, vi. 446. 
Pomatopus telescopus, iii. 14. 
Pomeegra Dolphin, vi. 23. 
Pompilus maculipes, vii. 186. 
Pontocypris angustata, x. 381. 
faba, x. 380, 381, 382, 408. 
—— mytiloides, x. 381, 382. 
propingua, x. 380, 381, 382, 408. 
trigonella, x. 381, 383. 
Pontoporia, cervical yertebre of, vi. 329, 109-115. 
blainvillii, viii. 235. 
, on the skull of, vi. 106-109. 
—— -——,, systematic position of, in the order 
Cetacea, vi. 106-109. 
Porcus bayad, a. 375. 
Porichthys poros\ssimus, vi. 388. 
Porphyrio cinereus, viii. 94, 95; ix. 230. 
indicus, vill. 92. 
melanotus, iil. 370. 
76 
Porphyrio neglectus, viti. 92. 
poliocephalus, ix. 228. 
, proportions of the leg-bones in, vi. 518. 
—— pulverulentus, viii.92; ix. 228, 251. 
samoénsis, viii. 92. 
smaragdinus, vill. 92. 
Porpoise, vi. 111. 
, short-snouted, vi. 24. 
Porzana fusca, 1x. 230, 251. 
jamaicensis, ix. 500, 501. 
pygmed, ix. 230, 251. 
rubiginosa, 1x. 230. 
spilonota, ix. 464, 467, 500, 
tabuensis, ix. 500, 501. 
Potamogale, characters and affinities of the genus, 
vi. 1-16. 
velow, vi. 3-14. 
Potidea virescens, 1x. 523. 
Preugena carbonaria, iii. 220. 
marginata, iii. 220. 
rubripes, iii. 220, 
Pratincola atrata, viii. 63. 
caprata, vill. 63; ix. 193, 250. 
hempricht, vii. 323. 
—— pastor, vil. 323. 
rubetra, vii. 323; x. 261, 262, 292, 312, 314. 
, skull of, x. 289. 
semitorquata, Vii. 323. 
Priacanthus boops, ii. 174. 
fulgens, ii. 174. 
macrophthalmus, ti. 174. 
Primates, contributions towards a more complete 
knowledge of the skeleton of the, vi. 175-226. 
Prioniturus discurus, ix. 1382, 133, 249. 
Sflavicans, viii. 32. 
platurus, vili. 32. 
spatuliger, ix. 133. 
wallacei, vill. 32. 
Prionochilus aureolimbatus, viii. 72; ix. 336; x. 
311, 312. 
, Skull of, x. 254. 
Prionus cumingit, i. 105, 111; ii. 187. 
fabricii, iii. 212. 
hayesvi, 1. 104, 112. 
pertii, i. 106, 111. 
Prioscelis (Iphius) crassicornis, ii. 216. 
( ) raddoni, iii. 215, 
