Glyphidrilus buttikoferi Michaelsen 1922

Dimensions: body length 110 mm. Body cylindrical in anterior part, quadrangular in transverse section behind clitellum. 370 segments. Body colour pale brown. At posterior end dorsal surface considerably broader than the ventral. Clitellar wi on ventro-lateral part of clitellum in 25–30. Prostomium zygolobous. Dorsal pores absent. Clitellum annular in 12–33. Four pairs of setae per segment from 2, setal formula aa:ab:bc:cd:dd = 1.0:0.5:1.5:0.5:1.0 in segment 8. Female pores, male pores and spermathecal pores not visible. Gm with rim: lateral paired or asymmetrical on bc in 17–24, median unpaired on aa in 12–24 and 29–31. Septa 5/6–8/9 thicker, 9/10–11/12 thick and 12/13 to the last segment thin. Gi small, globular within 8. Intestine enlarged from 15. Dorsal blood vessel anterior to 7. He in 7–11. Np distinguishable from segment 15 onwards. Sv in 9–12, with pair in segment 12 larger than the others. Ov in 13–14. Testis in 10–11. Prostate and accessory glands absent. Sc in 14/15–17/18, two to seven on each side per segment.