Gonyostomus subhybridus da Costa, 1906

Breure, Abraham S. H. & Ablett, Jonathan D., 2014, Annotated type catalogue of the Bulimulidae (Mollusca, Gastropoda, Orthalicoidea) in the Natural History Museum, London, ZooKeys 392, pp. 1-367 : 155

Gonyostomus subhybridus da Costa, 1906 Figs 46G-I , L57iv

Gonyostomus subhybridus da Costa 1906b: 97, pl. 9 fig. 1; Breure 1979: 114.

Type locality.

"Pozuzo, Eastern Peru, 800 metres".

Label.

"Pozuzo. Eastern Peru. 800 Ms", in da Costa’s handwriting.

Dimensions.

"Long. 50, diam. 19 mm."; figured specimen herein H 49.2, D 19.5, W 6+.

Type material.

NHMUK 1907.11.21.127, holotype (da Costa coll.).

Remarks.

"Of this fine shell only one specimen has been received" ( da Costa 1906b: 97); the specimen is thus the holotype. The top whorl is missing. This taxon may prove to be identical to Otostomus pulcherrimus H. Adams, 1867.

Current systematic position.

Bulimulidae , Drymaeus (Drymaeus) subhybridus (da Costa, 1906).

Figures

Figure 46. Drymaeus species. A-C Drymaeus (Drymaeus) punctatus da Costa, 1907, lectotype NHMUK 1907.11.21.20 (H = 36.6) D-F Drymaeus (Drymaeus) pulcherrimus (H. Adams, 1867), holotype NHMUK 1867.5.18.3 (H = 39.1) G-I Drymaeus (Drymaeus) subhybridus (da Costa, 1906), holotype NHMUK 1907.11.21.127 (H = 49.1) J-L Drymaeus (Drymaeus) geometricus (Pfeiffer, 1846), lectotype NHMUK 1975564 (H = 34.6). All enlarged.

Figure L 57. Labels. i Bulinus strigatus Sowerby I, 1833 ii Bulimus studeri Pfeiffer, 1847 iii Bulimus subfasciatus Pfeiffer, 1853 iv Gonyostomus subhybridus da Costa, 1906 v Bulimus subinterruptus Pfeiffer, 1853 vi Bulimulus (Liostracus) subpellucidus E. A. Smith, 1877 vii Drymaeus subventricosus da Costa, 1901.