Illustrated type catalogue of Amphidromus Albers, 1850 in the Natural History Museum, London, and descriptions of two new species Author Sutcharit, Chirasak Author Ablett, Jonathan Author Tongkerd, Piyoros Author Naggs, Fred Author Panha, Somsak text ZooKeys 2015 492 49 105 http://dx.doi.org/10.3897/zookeys.492.8641 journal article http://dx.doi.org/10.3897/zookeys.492.8641 1313-2970-492-49 334F0DAA1CD140F49B8CA62E4A97A732 Taxon classification Animalia Stylommatophora Camaenidae Amphidromus maculiferus gracilior Fulton, 1896 Bulimus maculiferus var. β . Pfeiffer, 1853: 319. Kuester and Pfeiffer 1854 : pl. 40, fig. 9. Amphidromus maculiferus var. gracilior Pfeiffer, Fulton 1896a : 74, 75. Type locality. Mindanao Island [Philippines]. Type material. Possible syntype NHMUK 1842.5.10.60 (1S, Fig. 8I; H=56.3 mm, W=28.8 mm). Remarks. Fulton (1896a : 74, 75) attributed the authorship of this species to L. Pfeiffer. However, "Gracilior" in Pfeiffer (1853 : 319) is only the first word of the description which is not a valid name ( ICZN 1999 : Art. 11.9). Therefore, Fulton (1896a : 74) is the sole author of this species. The specimens that Pfeiffer used as the basis for " Bulimus maculiferus var. β." , were examined and used by Fulton, and are acknowledged as the type series ( ICZN 1999 : Art 72.4). A single specimen in the NHM from H. Cuming' s collection with Fulton's handwritten labels bearing the taxon name and the locality "Mindanao, Philippines" is considered to be a possible syntype. This specimen corresponds closely with the figure in Kuester and Pfeiffer (1854 : pl. 40, fig. 9). However, the specimen is much smaller in size than the specimens quoted in Pfeiffer (1853 : 319). Therefore, we treat the NHM specimen as a possible syntype.