560 
Pedipalpi (appendages), 263, 303, 309, 
321, 422, 426, 433, 440, 458 
Pedunculata, S4 
Pelagic Crustacea, marine, 202 ; 
trine, 207 
Pelops, 467 
Peltiidae, 63 
Peltogaster, 95 ; structure, 95 ; males, 99; 
castration caused by, 100; P. cwrvatus, 
castration caused by, 100; P. sulcatus, 95 
Peltura, 247 
Peneidae, 762 
Peneidea, 758, 162 ; metamorphosis, 159 
Penella sagitta, 74 
Peneus, 158, 162; metamorphosis, 159, 
159, 160, 161 
Pentanymphon, 504, 537 
Pentaspidae, 87 
Pentastoma, 488 n.; P. 
489, 4945 P: 
serratum, 489 
Pentastomida, 258, 488 f.; structure, 
489; habitat, 488; life-history, 488, 
493 ; hosts of, 496, 497 
Pephredo hirsuta, 535, 541 
Peracantha, 43, 53; alimentary canal, 45 
Peracarida, 114, 778 
Pereiopod, defined, 110; reduced hind, 
in Galatheidea, 168; in Hippidea, 
170; in Paguridea, 172 ; in Dromiacea, 
184 ; in Oxystomata, 185 
Periegops hirsutus, 393 
Peroderma cylindricum, 75 
Petrarca bathyactidis, 93 
Pettalus, 448 
Pezomachus gracilis, parasitic In cocoons 
of Spiders, 367 
Phacopidae, 249 
Phacopini, 243 
Phacops, 223, 232, 235, 249 ; P. latifrons, 
227; P. sternbergi, 248 
Phaeocedus braccatus, 397 
Phagocytes, in Danalia, 132 
Phalangidea, 258, 440 f.; habits, 441; ex- 
vernal stravture, 442 ; internal structure, 
444; nervous system, 446; classifica- 
tion, 447 ; British species, 453 
Phalangiidae, 449 
Phalangiinae, 450 
Phalangium, 444, 450, 526 ; mouth-parts, 
443; P. balaenarum, 502 ; P. cornutum, 
450; P. littorale, 501; P. opilio, 445, 
446, 450, 526 
Phalangodes, 449 ; 
terricola, 449 
Phalangodidae, 448 
Phanodemus, 535 
Phidippus, 421; P. morsitans, 365, 421 
Philichthyidae, 73 
Philichthys, 73; P. xiphiae, 73 n. 
Phillipsia, 251; P. geminulifera, 250 
Philodrominae, 473 . 
lacus- 
denticulatum, 
emarginatum, 489; P. 
P, armata, 449; P. 
INDEX 
Philodromus, 413; P. aureolus, 413; P. 
margaritatus, 413 
Philoscia muscorum, 129 
Pholeidae, 336, 407 
Pholcus, 320, 401; 
401 
Phoroncidia, 404; P. 7-aculeata, 318 
Phoroncidiinae, 317, 404 
Phosphorescence, of Copepoda, 59; rela- 
tion to eyes in deep-sea Crustacea, 150, 
151 
Phosphorescent organs, of Euphausiidae, 
145; of Stylocheiron mastigophorum, 
151 
Phoxichilidae, 539 
Phoxichilidiidae, 538 
Phoxichilidium, 506, 512, 520, 521 n., 
523, 525,538 ; P. angulatwm, 520; P. 
exiguum, 541; P. femoratum, 508, 524, 
538, 540; P. globosum, 540; P. mollis- 
stmum, 517; P. olivaceum, 540 
Phowichilus, 505, 512, 539; P. australis, 
539, 540; P. bohmii, 539; P. charyb- 
daeus, 514, 515, 539; P. laevis, 5387, 
539, 541; P. meridionalis, 5389; P. 
mollis, 539; P. proboscideus, 532; P. 
procerus, 539; P. spinosus, 505, 508, 
510, 537, 539, 541, 542; P. vulgaris, 
539 
Phreatoicidae, 
217 
Phreatoicidea, 736 
Phreatoicopsis, 136 ; distribution, 211 
Phreatoicus, 136; distribution, 210, 211, 
217; P. assimilis, habitat, 210: P. 
typicus, habitat, 210 
Phronima, 140; P. sedentaria, 140 
Phrynarachne, 414; P. decipiens, 374, 
414 
Phrynichinae, 373 
Phrynichus, 313 
Phrynidae, 309, 310, 312 
Phrynopsis, 313 
Phrynus, 312 
Phryxidae, 730 
Phyllocarida, 777, 242 
Phyllocoptes, 465 
Phyllo,, .a, 19 f.; appendages, 24 f.; 
alime. tary canal, 29; vascular system, 
29; nervous system, 30; reproductive 
organs,’31; habitat, 32; genera, 35 
Phyllosoma, larva of Palinwrus, 166 
Phytoptidae, 464 
Phytoptus, 464 n., 495 (= Eriophyes, q.v.) 
Pickard-Cambridge, F., 352 
Pickard-Can.. ridge, O., 318, 321 n., 323 n., 
359 n., 372, 374, 380, 385, 401 n., 
436, 438, 450, 451, 452 
Pillai, 375 
Pilumnus, 191 
Pinnotheres pisum, 195 
P. phalangioides, 
136; distribution, 211, 
| Pinnotheridae, 195 
