Placostylus (Euplacostylus) cylindricus Fulton, 1907

Breure, Abraham S. H. & Ablett, Jonathan D., 2012, Annotated type catalogue of the Bothriembryontidae and Odontostomidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London, ZooKeys 182, pp. 1-70 : 9

Placostylus (Euplacostylus) cylindricus Fulton, 1907 Figs 11C, 11iii

Placostylus (Euplacostylus) cylindricus Fulton 1907: 154, pl. 10 fig. 3.

Placostylus (?Proaspastus) cylindricus (Fulton); Breure and Schouten 1985: 64.

Eumecostylus cylindricus (Fulton); Delsaerdt 2010: 39, pl. 5 figs 1-5.

Type locality.

"Isabel Island, Solomons" (see remarks).

Label.

"Isabel Id. / Solomon Ids.", in Fulton’s handwriting.

Dimensions.

"Maj. diam. 23, alt. 71 mm."; lectotype H 71.3, D 27.4, W 6.7.

Type material.

NHMUK 1907.5.3.160, lectotype (ex Fulton).

Remarks.

Fulton (1907) mentioned that he had three specimens, of which the NHMUK specimen corresponds to his figure. Contrary to Breure and Schouten (1985), it should not be considered as holotype, but is here designated as the lectotype (Art. 74.6 ICZN). The specimen has the apex damaged. Clench (1941) questioned the type locality and suggested it was erroneous. Also Delsaerdt (2010) has been unable to locate this species on Santa Isabel; it is only known from Guadalcanal.

Current systematic position.

Bothriembryontidae, Eumecostylus cylindricus (Fulton, 1907).

Figures

Figure 11. Eumecostylus species. A, i Eumecostylus calus (E. A. Smith, 1891), lectotype NHM 1891.11.3.4 (H = 78.0) B, ii Eumecostylus foxi (Clench, 1941), paratype NHM 1953.2.4.1 (H = 82.3) C, iii Eumecostylus cylindricus (Fulton, 1907), lectotype NHM 1907.5.3.160 (H = 71.3).