FIGURE 13. A–M, Cerithidea decollata. N–Y, C. tonkiniana. A in The genus Cerithidea Swainson, 1840 (Gastropoda: Potamididae) in the Indo-West Pacific region

FIGURE 13. A–M, Cerithidea decollata. N–Y, C. tonkiniana. A, Port Alfred, South Africa (NHMUK 1927.2.9.362). B, Africa (NHMUK 20130256). C, D, I, SE Pemba Bay, Cabo Delgado Prov., Mozambique (NHMUK 20060485). J–M, Murex decollatus Linnaeus, 1767, neotype, SE Pemba Bay, Cabo Delgado Prov., Mozambique (NHMUK 20130229). E, Zwartkops R., South Africa (NHMUK 20130257). F, Umgeni R., Durban, South Africa (NHMUK 20041433). G, Toliara, Madagascar (NHMUK 20130258). H, no locality (NHMUK 20130259). N, O, Ta Mai Tuk, Tolo Harbour, Hong Kong (NHMUK 20130261). P, Sai Kung, Hong Kong (NHMUK 20070380). Q, C. tonkiniana Mabille, 1887, syntype, Tonkin, Vietnam (MNHN 25690). R, Hai Phong, Vietnam (NHMUK 20130260). S–W, Ukidono-Kobashi, Yorimo R., Touruta-Shinden, Usa, Oita Pref., Japan (NHMUK 20070383; T–W views of same specimen). X, Y, Hikawa R., Yatsushiro-gun, Kumamoto Pref., Japan (NHMUK 20130262).