or beach-fleas, a
genus of littoral amphipoda, 86
Tanaella, 325
Tanaidæ defined, 322; classifica-
tion of, 9, 328
Tanais, 323; Dulongii, Edwardsii,
filum, tomentosus, vittatus, 326;
balticus, curculio, dubius, rhyn-
chites, 327
Tasmania, pitted against Van
Diemen's Land, 210
Tatos, name of the Birgus latro at
Samboangan, 158
Telson, 46; in Cumacea, 300
Testacea, distinguished from Crus-
tacea, 5
Tetradecapoda, alias Edrioph-
thalma, 7
Tetralia, Paulson on the genus, 65
Thalassina, anomalus, scorpion-
oides, 181
Thalassinidæ defined, 181
Thalassinidea defined, 180
Thalassocaridæ defined, 239
Thalassocaris, 239
Thaumastocheles zaleucus, 189;
claws of, 190
Thaumastochelidæ defined, 189
Thaumastoplax, 102; last legs de-
ficient in, 103
Thelphusa, 14; chilensis, depressa,
fluviatilis, perlata, 76; dehaanii,
Westwood, J. O., on Gecarcinus,
84
White, Adam, genera named by,
197; his authority cited, 203;
species assigned to Hippolyte
by, 235
Whymper, Mr. E., Isopods and
Amphipods found by, 14, 429
Willemoesia leptodactyla, 201
Windows in legs and breast of a
crab, 102
Wood-lice, name applied to isopod
crustaceans, 13
Wood-Mason, Prof. J., on the
Gecarcinidæ, 80; on young of
Paranephrops, 210
Wood's Hole, Massachusetts, 150,
185
Woodward, Dr. H., the term tho-
racipoda proposed by, 7, on
an encysted Pinnotheres, 101;
his Ceratocephalus Grayanus,
364
XANTHO, 56; floridus, hydrophi-
lus, incisus, rivulosa, tubercu-
lata, 62; Bouvieri, 63
Xanthodes, affinity with Xantho
of, 56
Xavier's adventure with a crab,
70
Xiphocephalus, synonym of Rhab-
dosoma, 30
Xiphopeneus, sub-divided joints
of, 219
Xiphosura, an order of Gigantos-
traca, 10
Xyphicéphale, 30
YOUNG, of Cancer irroratus, 61;
of Corystes cassivelaunus, 74;
of Gecarcinus, 84; of Hippa
talpoida, 150; of Porcellana
longicornis, 172; of Palinuridæ,
198; of Astacus americanus,
204; of Paranephrops zealandi-
cus, 210; of Squillidæ, 280, 288,
of Gnathiidæ, 337
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