Anomura, 404 



Anopheles, 509 ; maculipennis, 505 ; 



444, 445 



AnopLophrya, 10'] ; prolif era, 108 



Anoplura, 483 



Anostraca, 356; 327, 354, 355, 360 



Antedon, 654, 657; bifida, 654; 

 rosacea, 654; 655 



Antennae, 306-7, 308, 309; First, of 

 Crustacea, see Antennules; of 

 Crustacea (second pair)*, 327, 

 328-9, 332, 336, 339, 342, 354, 

 356, 359, 360, 362, 364, 369, 372, 

 373, 379, 380, 387, 390, 395, 397, 

 401, 410; of Insecta*, 426, 463, 

 471, 474, 475, 476, 490, 492, 494, 

 495, 500, 509, 510, 511, 512; of 

 Myriapoda*, 420, 422; of Trilo- 

 bita, 323 ; so called, of Rotifera, 

 240; of Peripatus, see Preantennae 



Antennal glands, 345 ; 346, 401, 414 



Antennules, 326; 328-9, 332, 334, 

 339, 342, 356, 360, 364, 372, 378, 

 380, 382, 383, 385, 387, 388, 390, 

 395, 400, 410 



Anterior aorta, of Araneida, 530; of 

 Carcinus (ophthalmic artery), 412 ; 

 of Helix, 556; of Insecta, 437; of 

 Lamellibranchiata, 580; of Scorpi- 

 onidea, 522; of Sepia, 593 



Anterior cervical groove, 392 



Anterolateral edge, 408 



Antheridia, 58, 59 



Anthomedusae, 154; 158, 160, i6i, 

 164. See also Gymnobiastea 



Anthotiomus gratidis, 493, 495 



A?ithuphora, 503 



Anthozoa, see Actinozoa 



Atithrenus museorutn, 436 



Antipathes, 386 



Anurida maritima, 465 



Anus, 130; of Amphineura, 549; of 

 Balanoglossiis, 664 ; of Brachiopoda, 

 6i6; of Echinodermata*, 623, 626, 

 63 1, 636, 639, 640, 647 ; of Echiuroi- 

 dea, 301; of Gasteropda, 551; of 

 Gastrotricha, 243 ; of Haliotis, 564, 

 565 ; of Helix, 556; of Lepas, 379; 

 of Mollusca, 544 ; of Nemertea, 233, 

 234; of Opisthobranchiata*, 544, 

 567, 569 ; of Peripatus, 3 1 9 ; of Poly- 

 chaeta, 284 ; of Pterobranchia, 668 ; 

 of Sepia, 591 ; of Sipunculoidea, 

 304. See also Alimentary canal 



INDEX 689 



Aorta, of Anostraca, 348; of Helix, 



556. See also Anterior aorta, 



Posterior aorta 

 Aperture, see Opening 

 Aphaniptera, 512 

 Aphididae, 478 

 Aphids, 439 

 Aphis, 435; rumicis, 478; 474, 478, 



480 ; saliceti, 480 

 Aphodius, 495 



Aphrodite, 267 ; 264, 267, 268 

 Apical lobe, 338 

 Apical nervous system, of Crinoidea, 



656; of Echinodermata, 630; of 



Holothuroidea, 650 

 Apical organ, 282, 284, 611 

 Apical rosette of trochosphere, 282 

 Apis, 497, 498, 503; ynellifica, 432, 



438, 496, 504 

 Aplacophora, 548 

 Aplysia, 567; 554, 568, 572 

 Apocrita, 500 

 Apoda, 382 

 Apodemes, 340 

 Apodous larvae, see Larvae 

 Apoidea, 503 



Apoplastid phytomastigina, 47 

 Apopyles, 120 



Appendages, Paired, see Limbs 

 Appendicularia larva, 675 

 Apposition image, 313 

 Apseudes, 395, 396 

 Apterygota, 463 ; 429, 431, 452 

 Apus, 360; 328, 332, 333, 337, 338, 



362; cancriformis, 360; 361 

 Aquatic oligochaets, 291 

 Arachnida, 515; 308 

 Araneida, 530 

 Arcella, 72; 12, 28, 28, 43, 68; discoi- 



des, 73 

 Archenteron, 129; of polychaete em- 

 bryo, 282 

 Archiannelida, 294; 260 

 Archicerebrum, of Lankester, see 



Procerebrum; setisu stricto, 309 

 Archigetes, 230 

 Architeuthis, 588 

 Arenaceous shells, 75 

 Arenicola, 272; 263, 264, 267, 275, 



282; marina, 272; 273, 274 

 Argas, 534; S34', persicus, 535, 536 

 Argonauta, 589, 599 

 Argulus, 376; 377; americanus, ZlTt 



foliaceus, 376; 377 



