Bulimulus montivagus chacoensis Ancey, 1897 Figs 14 D–E, 14i

Bulimulus montivagus var. chacoensis Ancey 1897: 16; Wood and Gallichan 2008: 35.

Type locality.

[Bolivia, Dept. Tarija] "Caiza, Gran Chaco (Bolivie)".

Label.

"Caiza, Chaco de Bolivie", in Ancey’s handwriting.

Dimensions.

[Measurements of three specimens given] "a) Long. 22, lat. 7 1/2 mill-b) Long. 22, lat. 8 mill.-c) Long. 18, lat. 7 1/2 mill."; figured specimen H 20.9, D 7.7, W 8.5.

Type material.

RBINS/MT2342, lectotype (design. n.), ex Géret ex Ancey, Borelli leg. (Dautzenberg coll.).

Remarks.

The RBINS material corresponds with the original measurements and is here designated lectotype. The shell shape, especially the flaring basal lip, and the number of whorls (8+) are not typical for Naesiotus, and this species is only tentatively placed here. Miquel (1989: 62) suggested a possible synonymy with Naesiotus rocayanus ( d’Orbigny, 1835); this has to be ascertained by further comparison of type material.

Current systematic position.

Bulimulidae, Naesiotus montivagus ( d’Orbigny, 1835).