386 
Areolar tissue, 22 
Argential layer of eye, 202 
Arterial ring, 287 
Arteries, 266, 284 
afferent branchial, 274 
allantoic, 278, 285, 293, 350 
axillary, 288 
basilar, 287 
brachial, 288 
branchial, 274 
carotid, 275 
caudal, 276 
central retinal, 201 
ciliary, 202 
coeliac, 284 
common carotid, 282 
coronary, 273 
cutaneus, 289 
development of, 273 
efferent branchial, 274 
epigastric, 288 
external iliac, 288 
femoral, 288 
gastric, 284 
genital, 286 
hepatic, 284 
hyaloid, 201 
hypogastric, 276, 285 
iliac, 288 
intercostal, 275, 286 
ischiadic, 288 
lumbar, 286 
mandibular, 271 
mesenteric, 284 
nephridial, 275, 285 
omphalomesaraic, 276 
omphalomesenteric, 276 
ovarian, 286 
peroneal, 288 
popliteal, 288 
pulmonary, 283 
radial, 288 
renal, 286, 300 
sacral, 286 
sciatic, 288 
somatic, 284 
spermatic, 286 
spinal, 287 
splenic, 284 
subclavian, 288 
tibial, 288 
ulnar, 288 
umbilical, 285 
vertebral, 287 
vesical, 285 
visceral, 284 
vitelline, 293 
Articular bone, 71 
Articular process, 46 
Articulare, 74 
Articulations, 38 
Arytenoid cartilage, 251 
Ascending aorta, 284 
INDEX. 
Ascending process, 82 
tracts, 140 
Asterospondylous, 51 
Astragalus, 117 
Atlas, 49 
Atrial chamber of gills, 240 
Atrioventricular canal, 272 
Atrium ‘of heart, 272 
lungs, 258 
of nose, 194 
Auditory, bulla, 100 
meatus, 187 
nerves, 174 
organs, 182 
vesicle, 183 
Auricle of heart, 272 
Auricularis superficialis nerve, 171 
Autostylic, 73 
Axial skeleton, 43 
Axillary artery, 288 
vein, 290 
Axis, 49 
Axon, 19,139 
Azygos appendages, 103. 
Azygos vein, 302 
Baleen, 216 
Barbs, 31 
Barbules, 31 
Basalia, 103 
Basibranchial, 65 
Basilar artery, 287 
plate, 60 
Basioccipital, 67 
Basisphenoid, 67 
Basitemporal plate, 96 
Bicuspids, 213 
Bidder’s organ, 347 
Bile, 231 
duct, 233 
Birds, see also Amniotes, Sauropsida. 
air-sacs, 261 
brain, 158 
circulation, 300 
gill pouches, 244 
girdles of, 108, 113 
intestine, 230 
limbs, 119 
lungs, 259 
scales, 31 
skin, 30 
skull, 95 
stomach, 225 
thymus, 246 
thyreoid, 247 
tongue of, 218 
vertebral column of, 52 
Biserial fins, 115 
Bladder, air, 247 
allantoic, 318 
swim, 247 
urinary, 318 
Blastomeres, 8 
