1514 
THE VOYAGE OF H.M.S. CHALLENGER. 
Hypli&laster, 
diadi'iuatus, 1123, 1285. 
hj'aliuas, 1058, 1278. 
inemiis, 934, 1293. 
planus, 607, 1293. 
Hypobythius, 1451. 
calyoodos, 969, 1192, 1280. 
moselcyi, 969, 1192, 1323. 
Hy|>oconcha, 
pauainensis, 376, 1389. 
sabulosa, 170, 1389. 
Hy]M>pcltariuni, 1441. 
spinosulum, 1141, 1177, 1391, 
1425. 
llj-jxipyxis, 1361. 
Ubrosa, 548, 1333. 
Hystrichaspis, 
cristata, 944. 
diraricata, 1017. 
dorsata, 1046. 
foveolata, 1231. 
fruticata, 1064. 
furcata, 1068. 
pectinata, 1261. 
serrata, 941. 
sulcata, 1207. 
lauthella, 
flabclliforniis, 718, 1362. 
lanthina, 117, 119, 142, 234, 254, 387, 
775, 871, 890, 980, 984, 987, 
1009, 1018, 1068, 1082, 1109, 
1202, 1203, 1232, 1264. 
czigua, 260, 267, 273, 283, 351, 
1297, 1300, 1301, 1309, 1311, 
1312, 1313, 1322, 1326, 1347. 
rotundata, 254, 267, 387, 1297, 
1300, 1301, 1309, 1314, 1447. 
Ibacrua, 811. 
alticrenatus, 594, 1341. 
brcripea, 747, 1341. 
Terdi, 309,776, 1341,1359, 1387. 
Ichthyaria, 
oculaU, 1173, 1191, 1323, 1327, 
1412. 
IciliKorgia, 
orienUlis, 691, 1366. 
Idliua, 
danc, 532, 1385. 
loonastcT, 
longimanoa, 118, 165. 
looaas|>is, 
cniciata, 986, 988, 992, 1004, 
1006, 1008, 1013, 1017, 1019, 
1024, 1029, 1033, 1046, 1053, 
1057, 1062. 
cUkbm. l'<^37, 1239, 1251, 1255, 
1257, 1261, 1266, 1268. 
icotahnlra, 950. 
Icosospis — conti mied. 
icosastaura, 1024. 
oruata, 1108. 
spectabilis, 1221. 
tabulata, 958. 
Icotopus, 
arcurostris, 552. 
Idas, 
dalli, 174, 1344. 
Idia, 
pristis, 373. 784, 1373, 1422. 
Idiacauthus, 
ferox, 251, 1280. 
Idmonea, 1162. 
atlantica, 227, 398, 415, 476, 
1351, 1360, 1412, 1427, 1447. 
australis, 441, 673, 1412, 1427. 
eboracensis, 714, 1412. 
fissurata, 1192, 1323. 
irregularis, 276, 1351, 1449. 
marionensis, 441, 454, 491, 1192, 
1297, 1300, 1301, 1323, 1326, 
1327, 1351, 1360, 1412, 1449. 
milneana, 276, 441, 491, 1351, 
1357, 1360, 1412, 1447. 
radians, 628, 1000, 1412, 1427. 
Idothea, 137, 143, 403, 498, 851, 1174. 
baflini, 78. 
Iliacantha, 
intermedia, 377, 1391. 
llyanthopsis, 1429. 
lougifilis, 240, 1367. 
Ilyarachna, 
quadrispinosa, 470, 1340. 
Ilyodoemon, 
maculatus, 747, 810, 864, 1337, 
1355, 1358, 1379. 
Inachus, 
IcptocUirus, 271, 1391. 
Iniotcuthis, 
morsei, 910, 1410. 
lolanthe, 1301. 
acanthonotus, 497, 1295. 
loplion, 1451. 
abnonnalis, 431, 1363. 
chclifer, 419, 431, 457, 1315, 
1325, 1329, 1355. 
cylindricus, 547, 1329. 
laminalis, 431, 1329. 
oranivorus, 547, 1329. 
pattcrsoni, 391, 1149, 1159, 1329, 
1355, 1448. 
Iphimedia, 
[tacifica, 468, 485, 1340, 1356. 
pulchridcntata, 490, 1385. 
Iphionclla, 
cinicx, 840, 843, 1319. 
Iphitcon, 122. 
IphitiLR, 
tubcrculatus, 178, 1347. 
Ipnops, 
niurrayi, 367, 387, 772, 1287, 
1289, 1298, 1299. 
Ipomcea, 
pes capraq 851. 
Ischnocliitoii, 
boogii, 346, 1409. 
fruticosus, 571, 1409. 
lougicymba, 571, 1409. 
viridulus, 413, 1409. 
Ischnosoma, 1451. 
bacilloides, 1135, 1307. 
bacillus, 520. 
spinosum, 282, 1307. 
thomsoni, 963, 1286. 
Isis, 807, 922. 
Isopbyllia, 
aspera, 168, 1369. 
australis, 240, 1369. 
cylindrica, 241, 1369. 
dipsacea, 240, 1369. 
fragilis, 240, 1369. 
knoxi, 241, 1369. 
marginata, 241, 1369. 
strigosa, 240, 1369. 
Isops, 
pacliydermatu, 236, 1302. 
Ispidula {see Oliva). 
Isthmia, 
enervis, 481, 492, 760, 905. 
nervosa, 905, 939. 
Ixa, 
cylindrus, 
va7\ megaspis, 831, 1391. 
Jaculella, 
acuta, 604, 956. 
' obtusa, 165, 529, 936. 
Jaera, 
pubesceus, 470, 1386. 
Jseropsis, 
mariouis, 437, 1340. 
.Janira, 
abyssicola, 663, 1307. 
tristani, 394, 1340. 
Janira (see Pecten). 
Janolus, 1429. 
australis, 729, 1410. 
Japetella, 1327. 
prismatica, 369, 1323. 
Jeffreysia, 571, 1402, 1452. 
cdwardicusis, 439, 1347. 
Julia, 
exquisita, 998, 1395. 
Julis, 
ascensionis, 1240, 1418. 
dorsalis, 659, 1418. 
obscura, 1001, 1418. 
