154-2 
THE VOYAGE OF H.M.S. CHALLENGER. 
Platycephahis — conlinufd. 
scnlptus, 781, 1420. 
spinoeus, 715, 1420. 
PUtyJia, 
auoinioiiles, 441, 1352, 1449. 
Platydoris, 
eurj-chlamy.s 628, 833, 1410, 
1427. 
riatygloasns, 
cyanostignia, 340. 
jKEciloptcrus, 928, 1420. 
pyrrliograniina, 928, 1420. 
trimacuLatus, 659, 1420. 
riatygrapsus, 
depressns, 909, 1393. 
Platyiflchnopus, 1429. 
mirabilis, 559, 1386. 
Platymaia, 1361. 
wyville-thomsoiii, 865, 1343. 
Platjniereis (set Nereis). 
Platyonychus, 
bipustulatus, 561, 139.3. 
iridescen.s, 748, 1343. 
Platysaccus, 
crenatus, 1262. 
Platyscclus, 
amiatus, 889, 1263. 
ovoides, 953. 
rissoiua', 625, 1340. 
serratulus, 334, 337, 1255, 1263. 
Platystethus, 
huttonii, 592. 
Platytroctea, 1301. 
apus, 336, 1298. 
Plaxiphora, 
• annichaelis, 1145, 1350. 
••arpenteri, 397, 1409. 
simplex, 397, 1.350, 13.59, 1409. 
PIm-OgloMIlS, 
altivelis, 939, 1420. 
PlecUniacos, 
rladoaceniuin, 1062. 
elathrocorys, 1040. 
cortiniaeus, 958. 
tripcxlisoiu, 941. 
Plectaniuin, 
ovodimare, 922. 
iphiprozouni, 1017. 
trigeniinuni, 958. 
I’lectocoronia, 
anarantba, 1060. 
fientarantha, 1046. 
triarantha, 1011. 
Ilr. topbora, 
pjramidalu, 1019. 
trioTnma, 941. 
Pln-tApyraniia, 
doderomma, 1041. 
heu-romina, 1218. 
be lafilrnra, 88], 1011. 
Plectojtyramis — conlinufd. 
lagena, 881, 1226. 
quadratommn, 957. 
Kcrrata, 1118. 
trappzomnia, 1016. 
Ploctropoma, 
maculatum, 657, 1420. 
Plegmospb.'era, 
exodictyon, 1038, 1044, 1206. 
leptodictyon, 1017. 
leptoplegnia, 980. 
maxima, 1044. 
pachypila, 973, 1038. 
pachyplegma, 1032. 
Pleoticus {sec Philonicus). 
Plcroma, 1360. 
turbinatum, 632, 1329. 
Plesiastra;a, 
iudarata, 643, 1371. 
urvillei, 643, 1371. 
Ple.sionika, 
brevirostris, 776, 1341. 
semilicvis, 579, 615, 633, 776, 
1321, 1326, 1341, 1356. 
spinipes, 865, 1341. 
uniden.s, 865, 1341. 
uniproducta, 358, 1341. 
Plesiops, 
corallicola, 658, 1420. 
Pleuraspis, 
amphithecta, 1062. 
liorrida, 845. 
pyramidalis, 871. 
ramosa, 1053. 
Plcurechinus, 
bothyroides, 695, 906, 1378, 
1423. 
Pleurobracliia, 889, 1109. 
Pleurobraiichiis, 447, 571, 910, 1309, 
1404. 
Pleurocoralliuin, 
Johnsoni, 140, 292, 1292, 1299, 
1303. 
secundum, 432, 744, 752, 1331, 
1355. 
Pleurocyatbus, 1361. 
brunneus, 752, 1332. 
Pleurogonium, 
.albidum, 470, 1340. 
minutum, 395, 1340. 
Hcrratum, 470, 1340. 
Pleuromma, 
alxlominalc, 314, 498, 500, 524, 
.551, 575, 660, 675, 986, 1093, 
109.5, 1141, 1167, 1193, 1207, 
1213, 1257, 1266, 1269. 
Pleuroncctca, 
variegatUH, 928, 1420. 
yokobamir, 928, 1420. 
I’leuronectia, 1125. 
Pleuropodium, 
cortina, 1042, 1268. 
Pleuropus, 1219, 1221, 1223, 1232, 1236, 
1256, 1264. 
pellucidus, 931. 
Pleurosigma, 
aestuarii, 911. 
affine, 
var, normanni, 812, 904, 938. 
angulatum, 277. 
antarcticum, 514, 517. 
balticum, 286, 911, 930. 
decorum, 889, 930. 
delicatulum, 481. 
directum, 220, 286, 302, 424, 515. 
elegantissimum, 733. 
elongatum, 930. 
japonicum, 733. 
kerguelense, 442. 
macilentum, 733. 
naviculaceum, 812. 
var. arafurensis, 733. 
pulchrum, 904. 
rigidum, 492. 
strigilis, 287. 
strigosum, 733, 911, 930, 973. 
Pleurostomella, 511. 
alternans, 200. 
brevis, 511. 
subnodosa, {139, 215, 1092, 1111, 
1217, 1247, 1253. 
Pleurotoma, 266, 267, .333, 351, 361, 
387, 422, 542, 560, 568, 603, 
684, 708, 786, 792, 795, 841, 
1171, 1309, 1322, 1348, 1405. 
carinata, 684. 
ischna, 609, 1322. 
maritiraa, 86. 
marmorata, 653, 708, 806, 1404, 
1427. 
monilifera, 653, 1404. 
phymatias, 793, 1309. 
speciosa, 728, 1404. 
spicea, 361, 1348. 
tigrina, 653, 1405. 
undosa, 708, 1405. 
xantbophaes, 568, 1405. 
(Bela), 
climakis, 333, 1297. 
dyscrita, 164, 1348. 
phreacra, 361, 1348. 
ula, 609, 1322. 
(Crassispira), 
oweiiii, 568, 1405. 
(Drillia), 
cballengcri, 579, 1348. 
cliinacota, 627, 1405. 
croasei, 579, 1348. 
horronda, 361, 1348. 
boylei, 579, 1348. 
