Hyalinonetrion gracillima (Seguenza, 1862)

Figure 2.21

1862 Amphorina gracillima Seguenza, p. 51, pl. 1, fig. 37.

2012 Hyalinonetrion gracillima (Seguenza); Debenay, p. 152.

2012 Hyalinonetrion gracillima (Seguenza); Milker and Schmiedl, p. 74, fig. 18.30.

Description. Test elongate, spindle-shaped with a long neck, aboral end acute, wall calcareous, hyaline with fine perforations, surface smooth; aperture terminal, rimmed by a phialine lip.