Description of Diplocardia Macdowelli a New Megascolecid Earthworm from Mississippi (Oligochaeta)

Abstract

A new quadrithecate earthworm, Diplocardia macdowelli is described from Mississippi. This species is morphologically similar to D. michaelseni, differing from that earthworm in size, number of segments, number of calciferous gland lamellae, form of the spermathecae, and the absence of modified spermathecal setae (ab) in IX.