Branchellion, [393], [395], [397], [401], [406]
Branchial crown, [336];
regeneration of, [283]
Branchiobdella, [376]
Branchiomma, [337];
gills, [261];
eyes, [272];
B. vigilans on Aphrodite, [299]
Branchiura, [352], [361], [367], [378] f.;
transverse section, [353]