FIGURE 12 in New species of Rhyacodrilus (Annelida: Clitellata: Rhyacodrilinae) of North America, with re-description of R. sodalis (Eisen, 1879)

FIGURE 12. Rhyacodrilus alcyoneus sp. n. A. Anterior part of the body showing the position of clitellum, chaetal tubercles and male pores. B. Dorsal pores. C. Coelomocytes. D. chloragenous cells with granules. E. Dorsal pore in the secondary annulation of segment V. F–H. Dorsal chaetae in segments VI, XIII and posterior. I–J. Ventral chaetae in segment VII and posterior, respectively. K. Atrium and penial chaetae arranged fan-wise, with numerous dorso-ventral muscular strands. L. Detail of penial chaetae and penial sac surrounded by musculature. M. Ventral chaetae in segments VII and X (spermathecal segment), for comparison.