intraclitellian

from The Century Dictionary.

• Having the ducts of the testes opening in, and not before or behind, the clitellum, as certain terricolous annelids or earthworms.
• noun An earthworm having this structure.
• noun Perrier divided earthworms into three groups:
• noun Preclitellians (e. g. Lumbricus), where the male pores are situated in front of the clitellum;
• noun Intraclitellians (e. g. Eudrilus), where the male pores are within the clitellum; and
• noun Postclitellians (e. g. Perichæta), where the male pores open behind the clitellum.