Aethon percis (Thomson, 1889) female: fig. 37: dorsal view; fig. 38: lateral view; fig. 39: ventral view; fig. 40: first antenna; fig. 41: second antenna; fig. 42: mandibular palp; fig. 43: maxilla; fig. 44: tip of maxilla; fig. 45: maxilliped; fig. 46: first pereiopod; fig. 47: second pereiopod; fig. 48: fourth pereiopod; fig. 49: genital segment, abdomen and caudal laminae; fig. 50: caudal lamina.