In both phorozooids and gonozooids, M6 ventrally incomplete beneath the intestine. Endostyle running from M23/4 to M41/2. Neural ganglion at M31/2. Gill-septum extending dorsally to M3 and ventrally close to M4, its posterior bend scarcely surpassing M6. Ovary near M6. Testis opening near the ovary, running forward to M41/2, and then looping back towards the right side to about M51/2, where it usually becomes slightly enlarged.