Chlorodiella nigra and C. xishaensis
(Holotype : single specimen observed alive, fixed and serially sectioned) .-Body slender, light pink to orange in color, delicate ;
found in tough, thick, parchment-like sheath. Sheath finely granular, slightly longer than worm . Worm measured alive ranged
2,275-2,450 gm long by 175-210 gm wide. Motility primarily mucociliary movement. Two conspicuous ocelli 7 or 8 gm long, located 51-68 gm from tip of head. Distance between ocelli 24-34 gm. Proboscis apparatus dorsomedial to foregut . Anterior proboscis chamber 15 gm long. Stylet bulb 34-41 gm long by 35 gm wide. Basis small, granular in appearance, 20 gm long. Single stylet on basis, 13 gm long. Stylet to basis ratio, 0.650. Four stylets in accessory stylet pouches subjacent to stylet bulb; stylets 10 gm long . Middle proboscis chamber 21 gm in diameter, granular in appearance. Posterior proboscis chamber not measured in living specimen. Proboscis sheath not observed, greatly reduced. Foregut ellipsoidal 62 gm long by 32 gm wide; laterally displaced; at level of posterior proboscis chamber . Anterior blood vessel in a simple loop over esophagus. Worm
hermaphroditic, with ovaries found in medial field and testes found in posterolateral field. Ovaries 38-43 gm in diameter, with 3 or 4 ova developing within . Ovaries arranged in alternating lateral bands. Ovarian pore indistinct but present in histological sections . Eggs observed but not measured. Testes observed histologically, 27 (25-32) gm in diameter. Takakura's duct may be present but not observed.
