Ringicula

Helwerda, Renate A., 2015, Acteonidae, Bullinidae and Ringiculidae (Gastropoda: Heterobranchia) from the Plio-Pleistocene of the Philippines, Zootaxa 3990 (2), pp. 197-220 : 211

Ringicula cf. spec 1

( Figure 26 )

Material. Tiep2 (1) RGM 961.817.

Characterization. Shell medium-sized; H 4.10 mm, W 3.18 mm; protoconch slightly elevated, 1.1 whorl, DP 0.27 mm; nucleus moderately small, DN 0.16 mm; teleoconch with distinct subsutural ridge and groove; additional sculpture of 11 irregularly spaced spiral grooves on the body whorl; lip not crenulated; thin parietal callus with nearly obsolete lamella; posterior sinus rather shallow.

Remarks. See remarks at Ringicula spec 1.

Figures

FIGURE 23 – 28. 23. Ringicula bella nov. spec .. Holotype RGM 961.797. Locality Anda 1. (a) rear view, (b) oblique apertural view, (c) apertural view, (d) basal view, (e) apical view. 24. Ringicula bella nov. spec .. Paratype RGM 961.750. Locality Tiep 2. (a) apical view, (b) apertural view, composite. 25. Ringicula spec 1. RGM 961.817. Locality Tiep 2. (a) rear view, (b) oblique apertural view, (c) apertural view, (d) basal view, (e) apical view. 26. Ringicula cf. spec 1. RGM 961.753. Locality Tiep 2. (a) rear view, (b) oblique apertural view, (c) apertural view, (d) basal view, (e) apical view. 27. Ringicula circumscripta nov. spec .. Holotype RGM 961.754. Locality Roxas. (a) rear view, (b) oblique apertural view, (c) apertural view, (d) basal view, (e) apical view. 28. Ringicula spec 2. RGM 961.751. Locality Tiep 2. (a) rear view, (b) oblique apertural view, (c) apertural view, (d) basal view, (e) apical view.