Arthr"poda, evolution, [11]
Arthr"poda, excretory organs, [396], [418]
Arthr"poda, giant-fibres, [489]
Arthr"poda, musculature, [411]
Arthr"poda, olfactory organs, [220]
Arthr"poda, resemblance to ancient fishes, [29]
Astacus, brain, [54]
Ast"cus, digestive ferment in cells lining the carapace, [442]
Ast"cus, optic chiasma, [101]