Sinoxychilus melanoleucus gen. nov. and sp. nov., holotype, HBUMM08236 specimen 1 A partial soft part B partial jaw. Dotted line indicating axis line C genitalia in general view. At-atrium; BC-bursa copulatrix; BCD-bursa copulatrix duct; Ep-epiphallus; P-penis; PC-penial caecum; PR-penial retractor muscle; PS-penis sheath; PVG-perivaginal gland; Va-vagina; VD-vas deferens.