Blennius, [709], [710]

Blepsias, [698]

Blind Fishes, [394], [713];

of Mammoth Cave, [619]

Blochius, [680]

Blood, of Hemichordata, [15];

of Tunicata, [49];

of Amphioxus, [124];

of Fishes, [341]

Blood-glands, [342]