Prosthète cannelée, 416
Protopodite, 36
Protosquilla, elongata, Guerinii,
287; larval form of, 290
Protozoa, 1
Protozoea, 217
Prudden, Mr. T. M., on Gelasimus
minax, 91
Psalistoma, the 'cutting margin
of the mandible,' 255
Pseudarmadillo carinulatus, 433
Pseuderichthus, larval form of
Pseudosquilla, 290
Pseudibacus Veranyi, 194
Pseudione, callianas-æ, confusa,
Dohrni, Fraissei, Hyndmanni,
insignis, 411
Pseudocalanus elongatus, parasite
on, 397
Pseudocarcinus gigas, 26
Pseudocorystes, 74; armatus, 75
Pseudocuma, cercaria, ciliata, lon-
gicornis, 307
Pseudocumidæ defined, 307
Pseudo-mandibles of Gnathia, 336
Pseudomma, 267; Sarsii, trunca-
tum, 269
Pseudomysis, 267; abyssi, 274
Pseudorhombila, 93
Pseudosiriella, 267; frontalis, 277
Pseudosquilla ciliata, 286
Pseudotanais, 323
Pseudozius, Mellissi, 62; Bouvieri,
63
Pterygotus, a genus of the Mero-
stomata, 26, 27
Pterygostomian regions, 52
Pterygura, 146; reason for dis-
carding the name, 147
Ptilanthura, 332
Ptychogaster Milne-Edwardsi, 178
Pycnogonida, some peculiarities of
the, 3, 4
Pylocheles, Agassizii, spinosus, 169
Pylochelidæ, 169; a synonym of
Parapaguridæ, 170
Pyrgoniscus cinctutus, 434
RACHITIA spinalis, 253
Ranina, scabra, 139; dentata, sca-
bra, serrata, 140, 141
Raninidæ, 140
Ranininea defined, 139
Raninoides personatus, 143
Rathbun, Miss M, on Panopeus,
56; on the Periceridæ, 120
Rathke, H., on the cray-fish, 84,
Rathke, J., Cymothoa lignorum of,
367
Réaumur, on exuviation, 207
Red Crab of the devil, 154
Regions of the carapace, 52
Regulus preoccupied, 239
Remipes, 151; adactylus, scutel-
latus, testudinarius, 152
Respiration, see Branchiæ and
Breathing apparatus
Rhabdosoma armatum, a slender
species of Amphipoda Hype-
ridea, 30
Rhinoceros-whale, the, 25
Rhinoryctes mirabilis, 431
Rhipidura, or tail-fan, 46, 146
Rhizocephala, an order of Cirri-
pedes, 11
Rhoda, inermis, Jardineana, Ras-
chii, 263
Rhomaleocaris, 242
Rhynchocinetes typus, 228
Rhyscotus turgifrons, 429
River Crabs, 76
Robber Crab, 158
Robertson, Mr. David, observa-
tions on Corystes cassivelaunus,
74; Cumacea found in the Clyde
by, 292; Leptaspidia brevipes
found by, 381
Rocinela, 348, 352; danmoniensis,
signata, 349; foveolatus, 350
Rondelet on Squilla mantis, 282
Rumph, or Rumphius, story attri-
buted to, 142; his Cancer cani-
nus, 143; on the cocoanut
crab, 158
Sandhopper, a littoral amphipod,
Saophra, 353
Saophridæ, 351, 353
Sars, Professor G. O., on the
maxillary fan, 41; description
of Scyramathia Carpenteri, 118;
development of Macrura ano-
mala, 178; of Upogebia, 186;
on the Schizopoda, 257, 272;
Cumacea, 292, 313; Sphyrapus,
322; Leptochelia, 327; Cypro-
niscus cypridinæ, 397, &c.
Savart, 38
Savigny, 173, 251
Scalpellum regium, an abyssal
cirripede, 20
Scaphocerite, 38, 188
Scaphognathite, 41
Schiödte and Meinert, great work
on the Cymothoidæ by, 351
Schistomysis, 267; arenosa, Hel-
leri, Kervillei, ornata, Parkeri,
spiritus, 271
Schizopoda, a sub-order of Podo-
phthalma, 8; range in size of,
28; Bate's classification of, 223,
245; defined, 256
Sciacaris, 221
Sclerocrangon, boreas, cataphrac-
tus, salebrosus, 228
Scleropactes, 431
Scopimera, with a pane in the
leg, 102; globosa, 102
Scatuloidea maculata, 366
Scylla, 68; serrata, habits of, 69
Scyllaridæ defined, 191
Scyllaridea defined, and choice of
the name explained, 191
Scyllarus latus, 192
Scyphacella arenicola, 422
Scyphax, ornatus, setiger, 431
Scyra umbonata, 119
Scyramathia Carpenteri, descrip-
tion of, 118; origin of generic
name, 119
Seal, devoured by small crustacea,
21; stomach of, filled with
shrimps, 227
Sea-spiders, 3
Segments, 2, 32
Sensory filaments, 37
Seraphim, 27
Sergestes, literature of, 221; at-
lanticus, 221
Sergestidæ defined, 221
Serolis, paradoxa, 357; antarctica,
australiensis, Bromleyana, Bron-
gniartiana, carinata, cornuta,
elongata, latifrons, longicau-
data, minuta, neæra, pallida,
septemcarinata, trilobitoides,
tuberculata, 358; gracilis, 359;
eyes of, 359
Serolidæ defined, 356
Sesarma, 96; Pisonii, 97
Sexes, distinction of, 45; of
Corystes cassivelaunus, 72; of
the Oxyrrhyncha, 115; of Ga-
lathea, 175; of Gnathiidæ, 335;
of Cymothoidæ, 350; of Sphæ-
romidæ, 362
Shore Crab, the Common, 65
Shore-hopper, the, a littoral amphi-
pod, 16
Sicyonia, branchia of, 218; cari-
nata, 218
Siho maneki, meaning of the name,
88
Siphonostoma, a sub-order of
Copepoda, 10
Siriella, 267; Clausii, crassipes,
jaltensis, norvegica, 276; ar-
mata, Brooki, 277
Size, standards of, 24
Skeleton shrimps, 16, 22, 30
Slabber, Martin, on metamorphoses
of Crustacea, 59; on Macropsis,
273; on Eurydice achatus, 344
Sluiter, Dr. C. Ph., on manners of
Oxyrrhyncha, 113
Smith, Professor S. I., on young of
Caucer irroratus, 61; Platyo-
nichus ocellatus, 67; Ocypode
arenaria, 86; Gelasimus pugila-
tor, 89; Euprognatha rastelli-
fera, 111; Hippa talpoida, 150;
Upogebia affinis, 185; Squilla
mantis, 283, &c.
Solenocera, Philippii, siphono-
ceras, 217; meaning of the
name, 218
Folenolambrus, 121
Spatuliform, 65, 71
Specimens, on collecting, 12
Spelæophorus, meaning of the
Spencebatea abyssicola, 306
Spermatozoa, in the Squillidæ,
279
Sphæroma, serratum, 360; cur-
tum, Hookeri, Prideauxianum,
rugicauda, 361
Sphæromidæ defined, 359
Sphæroniscus, 433; flavomaculatus,
434
Sphyrapus, 321; malleolus, 321;
anomalus, serratus, tudes, 322
Spider Crabs, 105
Spirontocaris, 234, 235; Cranchii,
Gaimardii, pusiola, spinus, 236
Spiropagurus spiriger, 165
Sponge-dwellers, 17, 212, 349
Spongicola venusta, 212
'Spurious females,' 109, 126, 128,
396
Squame, alias scale, acicle, sca-
phocerite, exopod of second
antennæ, 38, 146, 188, 279, 316,
319, 377, 379
Squilla, 281; mantis, 282; ar-
mata, Desmarestii, empusa, 283;
nepa, scabricauda, 284; larval
forms of, 289
Squillacea, Dr. Boas on, 279
Squillidæ, range of, 19; sizes, 29;
ophthalmic segment, 34; first
antennæ, 38; defined, 279, 281
Stalio, Professor, on Carcinus
mænas, 65; Maia squinado, 112;
Lissa chiragra, 117; Calappa
granulata, 124.
Stenetrium, armatum, fractum,
Haswelli, inerme, 379
Stenoniscus pleonalis, 432
Stenopidæ, 211
Stenopidea defined, 211
Stenopus, hispidus, 211; spinosus,
212
Stenorynchus, spelling of, 105;
Phalangium, tenuirostris, 105
Stephanomma Goësii, unusual eye
of, 302
Stereomastis, meaning of the
name, 201; Suhmi, 200
Stiliform, origin of the word, 250,
311
Stilomysis, 267; grandis, 274
Stimpson, distinction of two
species by, 59; Latin descrip-
tion by, 418
Stochasmus, a conjecture rather
than a genus, 250
Stomach, on structure of, Dr. E.
Nauck, 47; M. F. Mooquard, 147
Stomatopoda, a sub-order of the
Podophthalma, 8; defined, 279
St. Paul's Rocks, land crabs at, 94
St. Peter's Sand, great crabs at,
26
Strauchia taurica, 308
Streets, Dr. T. H., on climbing
crabs, 158
Stridulating apparatus, 39, 64, 85,
92, 161
Strongylura, 325; arctophylax,
cylindrata, 328
Studer, Professor, on habits of
Serolidæ, 357
Stylamblys, 199, 255
Stylocerite, 188
Stylocheiron, longicorne, masti-
gophorum, 265
Stylodactylidæ defined, 250
Stylodactylus serratus, 250
Styloniscus, 421
Stymphalus dilatatus, 421
Subchelate, 45
Subgenera criticised, 107, 129,
TABULAR view, of the class Crus-
tacea, 49; sub-order Brachyura,
54; sub-order Macrura, 148;
larval Squillidæ, 290; Cumacean
families, 312; sub-order Iso-
poda, 314; Cymothoid group,
340; families of Epicaridea,
393; genera of Entoniscidæ,
405; genera of the Oniscidæ,
426; genera of the Armadilli.
didæ, 433
Tachæa, crassipes, incerta, 346
Tail, alias pleon or post-abdomen,
45
Talisman, the, Crustacea ob-
tained by, 153
Talitrus, a genus of Amphipoda,
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,
77
Thelphusidæ, 76
Thelphusinea defined, 76
Thelycum, the, 216
Themisto (preoccupied), brevi.
spinosa, longispinosa, 271
Thenus orientalis. 193
Thia, polita, residuus, 75
Thompson, Vaughan, on develop-
ment of Crustacea, 59
Thomson, Mr. G. M., describes a
new genus of Schizopoda, 256
Thoracica, an order of Cirripedes,
11
Thoracipoda, 7
Thoracostraca, objection to the
term, 8
Thorax, 7, 32
Turanites velox, 70
Thyrostraca, alias Cirripedia, 6
11, 31
Thysanoessa, borealis, gregaria,
longipes, macrura, neglecta,
264; longicaudata, 265
Thysanopoda, Couchii, tricuspida,
263; neglecta, 264
Titanethes albus, 422, 425, 426
Toulouroux, 79
Tracheæ, 4, 423, 425, 426
Transmutation of species, 103
Trapezia, 65
Trapeziidæ defined, 64
Travailleur, th, Crustacea taken
by, 118, 122
Trichobranchiata, 155, 165, 180,
Westwood, J. O., on Gecarcinus,
84
White, Adam, genera named by,
197; his authority cited, 203;
species assigned to Hippoly te
by, 235
Whymper, Mr. E., Isopods and
Amphipods found by, 14, 429
Willemoesia leptodactyia, 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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