B. lanceolatum, [112], [114] n., [115], [137], [138];

transverse section, [118], [121];

nephridium, [126];

nervous system, [128], [129];

gonads, [129];

B. nakagawae, [137], [138];

B. pelagicum, [129] n., [137], [138]

—see also Amphioxus

Branchiostomatidae, [137], [112]

Brauer, [571]