FIGURE 6. R. orientalis, A–D in Contributions towards a review of the genus Rhynchelmis Hoffmeister (Clitellata: Lumbriculidae)

FIGURE 6. R. orientalis, A–D from Maruyama, Sapporo; E from Okoppe River, Aomori. (A, B) anterior ends of whole worms, showing genital pores; midventral gland pores visible on B. (C) sagittal view of genital segments, from a cleared, whole worm, same specimen as A. (D) second atrium and spermatheca of the same specimen as A, drawn from sections. (E) reproductive organs, from a sagittal dissection. Scale bars: A–D = 2 mm; E = 200 μm.