Ammodytes tobianus, adrenals of, i. 543 Amphicœlia, characters of, i. xxxviii, 17 Amphicyon, teeth of, iii. 340, 372, 375 Amphisbæna fuliginosa, nerves of, i. 313 Amphisbænidæ, vertebral column of, i. 59 ANT Anas fusca, lower larynx of, ii. 220 Anas moschata, scent-glands of, ii. 230 Anas sandvicensis, external sexual charac Anas semipalmata, lower larynx of, ii. 229 Anatidæ. See Lamellirostratæ Ancitherium, characters of, ii. 284; . Androdon, sexual characters of, ii. 258 teguments, i. 546 veins, i. 468 Anguis, alimentary canal of, i. 447 liver, i. 451 lungs, i. 524 organ of smell, i. 330 scapular arch, ii. 65 vertebral column, i. 59 Anguis fragilis, alimentary canal of, i. 417 lungs, i. 524 ANT Anteater, Great-continued. muscles of tongue, iii. 23 salivary system, iii. 400 Anteater, scaly, bones of, ii. 396 Antechinus, prosencephalon of, iii. 104 pyloric appendages and pancreas, i. 430 Anthias, changes of, accompanying growth, Anthochæra, skull of, ii. 57 Anthracotherium, characters of, ii. 286 Antibrachial bones of Carnivora, ii. 507 skull, ii. 473 Antilope cervicapra, horns of, iii. 626 gland opening upon the head, iii. 632 Antilope (Aigoceros) equina, alimentary liver, iii. 482 skull, ii. 473 Antilope corinna, gland opening upon the Antilope dama, mammary glands of, iii. Antilope dorcas, mammary glands of, iii. veins, iii. 555 Antilope (Cephalophus) mergens, horns of, skull, ii. 473 Antilope oreas, mammary glands of, iii. 779 skull, ii. 473 Antilope rupicapra, suborbital pit or sinus Antilope strepsiceros, myelon of, iii. 77 Antilope tragelephus, horns of, iii. 626 glands opening upon the head, iii. 633, 634 horns, iii. 624, 625 Apistes, gills of, i. 480 Apodes, characters of, i. 10 Aptenodytes, characters of, i. 25; ii. 9 osseous system, ii. 16, 17, 25, 31, 41, Apterichthys cæcus, organ of smell of, i. 331 Apteryx-continued. ART alimentary canal, ii. 162 generative system, ii. 248, 256, 258 muscular system, ii. 85, 91 organ of sight, ii. 140 organ of smell, ii. 130 osseous system, ii. 18-22, 30, 34-36, Aptornis, characters of, ii. 13 osseous system, ii. 43, 48, 50, 58, 75, Aquila, characters of, ii. 12 liver, ii. 176 lower larynx, ii. 220 myelencephalon, ii. 119, 121 osseous system, i. 25; ii. 21, 32, 36, Arbor vitæ, Fishes, i. 275 Archegosaurus, skull of, i. 158 Archencephala, characters of, ii. 247; iii. Archeopteryx, characters of, ii. 13 restoration of, ii. 586 scapular arch and limbs, ii. 74 Arctictis (syn. Ictides) albifrons, alimentary lymphatics, iii. 508 vertebral column, ii. 491 Arctocephalus australis, skull of, ii. 496 organs of generation, male, iii. 654 generative system, ii. 257 Ardiscosoma, alimentary canal of, i. 445 Argyreiosus vomer, skull of, i. 108, 116, 154 Arius, air-bladder of, i. 491 Armadillo, alimentary canal, iii. 446 bones, ii. 393, et seq. Fishes, i. 488 Mammalia, iii. 532 Reptiles, i. 509, 516; iii. 537 Ass. See Equus asinus Astur, alimentary canal, ii. 171 muscular system, ii. 85 osseous system, ii. 17 Ateles belzebut, brain of, ii. 273, note Ateles niger, brain of, iii. 146 larynx, iii. 598 organ of touch, iii. 187 osseous system, ii. 515, 516, 530, 543 Ateles paniscus, dorso-lumbar vertebræ of, osseous system, ii. 307 Atherina presbyter, liver of, i. 425 alimentary canal, iii. 468 blood, iii. 515 AVE Auchenia lama-continued. hair, iii. 618 prosencephalon, iii 122 teeth, iii. 349 thyroid gland, iii. 565 vertebral column, ii. 460 Auchenia vicunia, blood of, iii. 515 Auchenipterus furcatus, air-bladder of, Aulostomus fistularia, skull of, i. 107, 169, Australian, skull of the, ii. 563 Auxis Cybium, air-bladder of, i. 493 Aves, characters of the class, i. 5 I. Natatores, ii. 9 brain, iii. 118 development, ii. 118, 119 varieties in weight and size, ii. 121 hæmorrhoidal, ii. 206 vena portæ, ii. 206 splenic, ii. 206 gastric, posterior, ii. 207 anterior, ii. 207 pancreatic mesenteric, ii. 207 inferior mesenteric, ii. 207 tibial, ii. 207 peroneal, ii. 208 digestive system, ii, 145 beak, ii. 145 tongue, ii. 151 mylo-hyoideus, ii. 153 salivary glands, ii. 154 alimentary canal, ii. 156 dilatation of the faucial ingluvies, or crop, ii. 158 development of Birds and peculiarities generative system, ii. 242 male organs, and semination, ii. 242 periodical variations of development, ii. 243 vas deferens, ii. 244 penis, ii. 244 spermatozoa, ii. 245 spermatoa, ii. 245 female organs and ovulation, ii. 246 ovarium, ii. 246 development of the ovarian ovum, ii. 246-250 mesometrium, ii. 249 fecundation in Birds, and struc- accessory generative structures periods of incubation, ii. 257 locomotion, ii. 112 progression on land, ii. 112 flying, ii. 113, 114 velocity of flight, ii. 115 muscular system, ii. 84 general characters, ii. 84 vertebræ, muscles of the, ii. 84 obliquus colli, ii. 86 rectus capitis lateralis, ii. 90 internus abdominis, ii. 91 rectus abdominis, ii. 91 depressor caudæ, ii. 92 ilio-coccygeus, ii. 92 ischio-coccygeus, ii. 93 head, muscles of the, ii. 93 biventer maxillæ, ii. 93 wings, mucles of the, ii. 94 second, ii. 96 coraco-brachialis, ii. 97 extensor metacarpi radialis extensor carpi ulnaris, ii. 99 use, ii. 101 iliacus internus, ii. 101 adductor brevis femoris, ii. 101 adductor longus, ii. 101 adductor magnus, ii. 101 obturator internus, ii. 102 abductor magnus, ii. 102, 109 vastus externus, ii. 102 cruræus, ii, 102 biceps flexor cruris, ii. 103 vastus internus, ii. 104 gastrocnemius externus, ii. internus, ii. 105 soleus, ii. 106 flexor perforans digitorum, flexor perforatus digitorum, pectineus, ii. 107 peroneus longus, ii. 107 extensor brevis digitorum, ii. 108 extensor pollicis brevis, ii. 108 use, ii. 110 use, ii. 119 dermo-ulnaris, ii. 112 nervous system, ii. 121 |