Compound chaetae of A
Sphaerosyllis
pirifera (falciger, unidentate, almost smooth on margin) B
Trypanosyllis
coeliaca (falciger, bidentate with both teeth similar, moderate spines on margin) C
Eusyllis
assimilis (falciger, bidentate, proximal tooth longer than distal one, short spines) D
Syllis
garciai (spiniger-like, long spines on margin); E
Syllis
garciai (falciger, bidentate, both teeth similar, long spines) F
Syllis
krohnii (falciger, bidentate, proximal tooth shorter than distal one, short spines on margin) G
Syllis
amica (thick simple chaeta by blade loss and shaft enlargement) H
Syllis
gracilis (thick simple chaeta by blade and shaft fusion). Aciculae of: I
Trypanosyllis
coeliaca (straight, pointed) J
Eusyllis
assimilis (distally bent at an angle) K
Syllis
gracilis (acuminate) L
Syllis
prolifera (distally rounded).