Figure 5.9-5.11. Pyrgo serrata (Bailey), 1861. 5.9. Side view. Recent. Challenger Station 168, NE coast of New Zealand, South Pacific Ocean (1100 fathoms). Natural History Museum, London. NHM ZF1148. Scale Bar = 337 microns. 5.10. Apertural view of specimen 9. Scale Bar = 302 microns. 5.11. Side view of specimen 9. Scale Bar = 331 microns.