484 ' BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Ostrea, 406. 
hians, 406. 
lima, 406. 
Oxymeris, 246, 249. 
PALLIUM, 401. 
Panocochlea, 345, 346. 
Pascula, 311. 
Patella, 330. 
australis, 330, 
subrufa, 329. 
ungarica, 329, 
Payreaudeautia, 332. 
Pecten, 400, 401, 402, 403, 404, 405. 
cocosensis, 405. 
gelatinosus, 408. 
liriope, 402. 
miser, 401. 
neoceanicus, 402. 
panamensis, 404. 
pasca, 401, 
polyleptus, 403. 
rotundus, 404. 
sericeus, 400. 
subnodosus, 401. 
thalassinus, 405. 
vitreus, 404. 
Pectunculina, 392, 
Pectunculus, 392, 399. 
granulatus, 392. 
multicostatus, 399. 
scalaris, 392. 
violascens, 399, 
Pelagodiscus, 440. 
Penitella, 425. 
Periploma, 426, 427. 
carpenteri, 426. 
discus, 427. 
stearnsii, 426. 
sulcata, 427. 
Perirhoé, 246, 248, 253. 
Petaloconchus complicatus, 326. 
Petrasma, 363, 866. 
Phaseolus, 391, 392. 
ovatus, 391, 392. 
patagonicus, 392, 
Pholadidea minuscula, 425. 
Phos, 306. 
beaui, 306. 
cocosensis, 306. 
Phyllodina, 419. 
Phyllonotus, 313. 
Phymorhynchus, 258, 283, 284, 285. 
Pileopsis, 329, 330. 
cornucopiae, 330. 
Pisidium, 411. 
Placiphorella blainvillei, 357. 
Pleurotoma, 255. (See Turris.) 
aulaca, 273. 
calliope, 261. 
cedonulli, 273. 
clara, 272. 
cristata, 257. 
emarginata, 259, 
exulans, 265, 
gemmata, 256. 
goodei, 257. 
gracilis, 259, 260. 
hooveri, 276. 
intorta, 256. 
linearis, 259. 
pagoda, 259. 
verrilli, 257. 
Pleurotomella, 258, 278, 279, 280, 28 
283, 284, 285. 
agonia, 278, 279. 
altina, 278. 
argeta, 283, 284. 
castanea, 258, 284, 
cingulata, 283, 284. 
clarinda, 285. 
dinora, 281. 
egregia, 279, 
esilda, 282. 
isogonia, 279. 
oceanica, 984. 
packardii, 258, 285. 
parella, 282. 
polystephanus, 281. 
suffusa, 282. 
aylona, 280. 
Plicatula dubia, 406. 
Pneumodermon, 232. 
Polinices, 333, 334, 335, 336, 397, 338 
agujanus, 334. 
constrictus, 337. 
crawfordianus, 335. 
intemerata, 334. 
litorinus, 387. 
pardoanus, 336, 
solutus, 335, 336. 
strebeli, 338. 
uber, 334. 
vaginatus, 336. 
Poromya, 428, 499, 430. 
anatinoides, 428. 
chilensis, 430. 
equatorialis, 429. 
granulata, 428. 
laevis, 428. 
mactroides, 429, 430. 
perla, 428. 
Propeamusium, 405. 
Proscaphella gracilior, 298. 
1, 28% 
