Figure 9.

Musculature of Lottia cf. kogamogai larvae. Anterior faces upwards in all images. A, B lateral view, ventral to the left. Age of larvae is given in hours postfertilization (hpf). A late veliger larva (24 hpf) with two, larval main and accessory, retractor muscles and a prototroch muscle ring. Note that the accessory retractor muscle inserts dorso‐anteriorly to the insertion site of the main larval retractor muscle. B pediveliger larva (32 hpf), the retractor muscles are now more ventrally due to the process of torsion, while two new muscles appear, the pedal retractor and the herein newly discovered, paired cephalopedal muscles. A, B CLSM, maximum projections. Scale bars: A, B = 30 μm