Lucinoida

Figure 5.Outline drawings of interior of right valves A Phacoides (Bellucina) amiantus lectotype B Radiolucina cancellaris neotype C Radiolucina jessicae new species holotype – Not to scale.

Figure 2.Scabrilucina victorialis shell features. A–C MCZ 362493 A Commarginal lamellae. Scale bar = 1 mm. B Detail of commarginal lamellae. Scale bar = 500 µm. C Detail of commarginal lamellae. Scale bar = 200 µm. D Protoconch NHMUK. Arrows mark boundary between PI and PII. Scale bar = 50 µm.

Figure 3.A–D Radiolucina jessicae sp. n., holotype (SBMNH 353469, Mexico, Baja California Sur, Bahia Concepcion) length = 4.5 m A Exterior of right valve B Exterior of left valve C Interior of left valve D Interior of right valve E–H Radiolucina jessicae new species, paratype (SBMNH 149936) E Close up of hinge of left valve F Close up of anterior adductor muscle scar of left valv G Close up of ribs of right valve H Close up of pallial line of left valve. E–H scale bar = 1 mm.

Figure 3.Internal drawings Scabrilucina species. A S. victorialis B Scabrilucina vitrea C Scabrilucina melvilli.

Figure 4.A–D Phacoides (Bellucina) amiantus Dall, 1901lectotype herein(USNM 64276, Mexico, Yucatan Strait) length = 6 mm A Exterior of right valve B Interior of right valve C Close up of ribs of right valve D Close up of hinge of right valve.