ovary: a female reproductive organ in which ova or eggs are produced, present in humans and other vertebrates as a pair.

branchial chamber: 鳃室

• branchial: of or relating to gills or to the homologous, embryonic parts in animals without gills

ostia: drainage openings

flank: the side of a person's or animal's body between the ribs and the hip.侧翼

mandibular muscular: 下颌肌肉

lateral mandibular muscular: 下颌外侧肌肉

digest gland: 消化腺

antenna nerve

optic nerve