Line drawings of specimens of Pararhadinorhynchus magnus n. sp from Scatophagus argus in Vietnam. (6) Holotype male. Note that the testes are almost contiguous with each other but not with the tubular cement glands that are somewhat enlarged posteriorly. B: bursa; CG: Cement gland, CGD: cement gland duct; SD: sperm duct; SP: Saefftigen’s pouch. (7) The anterior trunk of the same male in Figure 6. Note the size relationships between the proboscis, receptacle and lemnisci, the reticular anastomoses of lacunar vessels, shape and size of cephalic ganglion, and the presence of a nuclear pouch (NP) at the posterior end of the receptacle. The lemnisci are shown of average length but can be about twice as long or occasionally about as long but thicker. (8) Selected dorsal (left) and ventral (right) hooks numbered from anterior. (9) Mature egg. (10) Female reproductive system. Note the plump dome-shaped terminal tip posterior to the subterminal gonopore.