The female reproductive system of Longidorus elongatus (de Man, 1876) Thome and Swanger, 1936 (Nematoda: Longidorinae), with a note on the genera Longidorus (Micoletzky, 1922) Thome and Swanger 1936, and Xiphinema Cobb, 1913.
The female reproductive system of Longidorus elongatus is described from young and gravid females in situ and from dissections in saline. There is a marked sphincter at the end of the uterus before it joins the oviduct and between this sphincter and the oviduct there is a quadri-columella-like structure [see Wu, 1958; for abstract see Helm. Abs., 27, No. 107h]. In young females, at the junction of the ovary and oviduct, a short sac-like branch opposed to the ovary can be seen. Descriptions of some Longidorus and Xiphinema females are reviewed and it is suggested that further studies of these systems might help to clarify certain taxonomic problems in these genera. D.J.H.