INDEX 



[The names of species, genera, families, orders, etc., are printed 

 in Italics.] 



Abbreviation in development, 262 

 Abdomen, of crayfish, 113 



of cockroach, 155, 157 



Abdominal pores, 204 



Acanthias vulgaris, 203 



Acicula, 49 



Acmaa, 84 



Acromion, 292 



Actinotrichia, 217 



Afferent branchial arteries, 225, 272 



AliE cordis, 1 01, 129 



Albumen gland, Si 



Alimentary canal, of Distomum, 



3. 7 



of Earthworm, 21 



of Anodonta, 58 



of Helix, 76 



of cockroach, 157 



ofAmphioxus, 179 



of dogfish, 218 



of mammals, 288 



AUantoidean placenta, 304 



Allantois, 304 



Alternation of generations, 14 



Ametabola, 170 



Amnion, 166, 301 



Amniotic cavity, 301 



Amphiccelous vertebrfe, 210 



Arnphioxus, 172 



Annelida, 45 



Annuli, 91, 94 



Anodonta cygnea, 53-58 



Antennte, 95, 100, 107, no, 117, 



123, 142, 152, 168 

 Apus cancriformis, 92-1 11 



glacialis, 105-106 



spitzbergensis, 105 



Appendages of Apus, 95 

 Appendicular skeleton, 209, 

 Aqueductus vestlbuli, 2H 

 Archenteron, 190 



216 



Archiannelida, 45 



Archigates, 2 



Arterial arches, of frog, 272 



of mammals, 294 



Arteries, of crayfish, 129 



of dogfish, 225 



ArthrobranchiEE, 131, 132 

 Arthropoda, 91, 150 

 Ascidia, 202 



Asymmetry in Amphioxus, 196 

 Atrial folds, 197 • 



Atriopore, 175, 197 

 Atrium, 175, 181 

 Auditory capsules, 211 



nerve, 238 



organs, 124, 136, 245, 279, 286 



ossicles, 291 



Auricle, 224 

 Axial skeleton, 209 

 Azygos nerve, 1 36 

 vein, 296 



Basibranchial cartilage, 215 



Basihyal cartilage, 215 



Basi-occipital bone, 290 



Basipodite, 117 



Basipterygium, 216 



Basisphenoid bone, 290 



Bilateral symmetry, I 



Bile duct, 219 



Blastocoele, 48, 190, 250, 254, 256 



Blastocyst, 300 



Blastoderm, 165 



Blastopore, 38, 141, 166, 192, 247, 



250, 254 

 Blastula, 36, 190, 247 

 Blood - vascular System, of earth- 

 , worm, 27 



of crayfish, 129, 132 



ofAmphioxus, 184 



Botryoidal tissue, 49 



313 



Digitized by Microsoft® 



