Cyclophorus turgidus (Pfeiffer, 1851)

Nantarat, Nattawadee, Sutcharit, Chirasak, Tongkerd, Piyoros, Ablett, Jonathan, Naggs, Fred & Panha, Somsak, 2014, An annotated catalogue of type specimens of the land snail genus Cyclophorus Monfort, 1810 (Caenogastropoda, Cyclophoridae) in the Natural History Museum, London, ZooKeys 411, pp. 1-56 : 26

Cyclophorus turgidus (Pfeiffer, 1851)

Cyclostoma turgidum Pfeiffer, 1851: 139, 140 ('new replacement name’). Pfeiffer 1853a: 257, pl. 35, fig. 15, 16.

Cyclostoma crassum Pfeiffer, 1853b [1851: 242] (non C.B. Adams 1851).

Cyclophorus turgidus - Reeve 1861: sp. 43.

Cyclophorus crassus - Kobelt 1902: 136, 137.

Type locality.

Liew Kiew [Ryukyu Islands, Japan].

Type material.

Lectotype (design. n.), NHMUK 20040591/1 ( Fig. 23A; D =27.1 mm, H=23.1 mm, W=5), paralectotypes NHMUK 20040591/2-3 (2 shells; Fig. 23B; D =25.9 mm, H=21.3 mm, W=5; D=25.2 mm, H=20.5 mm, mm, W=5).

Remarks.

The name Cyclostoma turgidum Pfeiffer, 1851 was presented as a replacement name for Cyclostoma crassum Pfeiffer, 1853, a junior homonym. However since the " crassum " description was not published until 1853 (in the Proceedings of the Zoological Society for 1851 volume, see Duncan 1937) Cyclostoma turgidum is the valid original description. This taxon was described and illustrated based on specimens from the Cuming collection. The NHM collections contain two lots from the Cuming collection that have original labels in Pfeiffer’s handwriting with a striking-through of the taxon name " crassum ", replaced with " turgidum ". One lot of 3 specimens, NHMUK 20040591, has the collection locality "Liew Kiew" which matches with that given in the original description. The specimen figured in Pfeiffer (1853a: pl. 35, figs 15, 16) which matches with the measurements given in the original description is here designated as the lectotype. The second lot of three shells, NHMUK 20040590, has the collection locality "Ibyat, Bashee Islands" which corresponds to "var. minor in insula Ibyat (Bashee group)" from the Pfeiffer’s (1853b) " crassum " description and is excluded from the type series of this nominal species ( ICZN 1999: Art. 72.4.1).

Measurements of the specimens "var. minor" are given for future reference:

"var. minor" NHMUK 20040590 from Ibayat, Bashee Island [Batan, Island, Philippines] (3 shells; D=20.5 mm, H=16.8 mm, W=5; D=21.0 mm, H=17.9 mm, W=5; D=20.8 mm, H=16.3 mm, W=5).

Figures

Figure 23. Types of Cyclophorus species. A, B Cyclophorus turgidus (Pfeiffer, 1851) A lectotype NHMUK 20040591 / 1, and B paralectotype NHMUK 20040591 / 2 - 3 C, D Cyclophorus validus (Sowerby I, 1842) C lectotype NHMUK 20110280 / 1, and D paralectotype NHMUK NHMUK 20110280 / 2 - 3.