Sinella quinseta sp. n. 1Ant. III organ 2 labrum 3 clypeal chaetae (arrow indicates that the chaeta may be absent) 4 dorsal cephalic chaetotaxy 5 maxillary outer lobe 6 lateral process of labial palp E 7 chaetae on the ventral side of head 8 trochanteral organ 9 hind claw 10 anterior face of ventral tube 11 ventral face and lateral flap of ventral tube 12 distal part of anterior face of manubrium 13 manubrial plaque 14 mucro.