Rugalucina angela (Melvill, 1899). A–C Syntype of Lucina (Codakia) angela Melvill, 1899 (NHMUK 1899.12.18.20), exterior of left valve and interiors of right and left valves. Gwadur, Pakistan, L 8.1mm D–F L. (C.) angela syntype (NHMUK 1899.12.18.20), exterior of left valve and interiors of right and left valves, L 6.1 mm G–M Rugalucina angela Ras al Khaimah, Arabian Gulf, (NHMUK 20191071) G exterior SEM of right valve, L 5.0 mm H, I interior SEM of right and left valves, L 7.7 mm J dorsal view, L 5.9 mm K exterior of left valve, L 7.9 mm L, M exterior of left valve, interior of right valve, L 7.6 mm N, O R. angela exterior and interior of left valve, Gulf of Suez (NHMUK1868.5.29.2), L 13.7 mm P R. angela exterior of right valve and interior of right and left valves, Egypt, 7km south of Hurgada, H Dekker colln 4569, L 12.8 mm Q interior of left and right valves, Egypt, Port Safaga, H Dekker colln 3263, L 9.4 mm R, S detail of hinge teeth of Q. T R. angela exterior of left valve. Red Sea, Yemen, Orestes Point, N of Midi, H Dekker colln 4553, L 9.8 mm U R. angela exterior of right and interior of left valves, Aden (NHMUK 1963340), L 10.6 mm V R. angela exterior and interior of right valve, Krusadai, India, (NHMUK 1953.1.30.69-76), L 8.4 mm.