Nauphus. Fig. 22.—L.S. nauplius just after 5th moult. × 150. abd. cypris abdomen: b.c., body cavity; b brain; c.l.r. cypris limb udiments: mxa, maxilla, oes, oesophagus; s.o.g., suboesophageal ganghon. st. Stomach: y. yolk. Fig. 23—Lateral view, nauphus with lateral eyes lightly pigmented. Lettering as in Fig. 20 Fig. 24.—Nauphus just before metamophosis—reconstruction based on longitudinal horizontal ion × 150 add. cypris adductor muscle; e. nauplius eys; int, intestine rudiment; l.e., lateral (cypris) eye: m c., mantle cavity; st, stomach; y, yolk.