. Bulletin of the British Museum (Natural History). . Figs 273-276 Verena crenocarina ava (Pilsbry & Olsson). La Cira Formation, probably Miocene; Middle Magdalena Valley, Colombia. 273, ANSP 13079a, lectotype (herein selected) of Hemisinus (Verena) laevicarina Pilsbry & Olsson; oblique view of spire with shell axis rotated through about 90° anticlockwise compared with Pilsbry & Olsson (1935: pi. 3, fig. 10); Rio Oponcito, near Guanabanus; X 3. 274-276, ANSP, unregistered; casts of external moulds in decalcified mudstonc of Hemisinus (Verena) ava Pilsbry & Olsson, fro
. Bulletin of the British Museum (Natural History). . Figs 273-276 Verena crenocarina ava (Pilsbry & Olsson). La Cira Formation, probably Miocene; Middle Magdalena Valley, Colombia. 273, ANSP 13079a, lectotype (herein selected) of Hemisinus (Verena) laevicarina Pilsbry & Olsson; oblique view of spire with shell axis rotated through about 90° anticlockwise compared with Pilsbry & Olsson (1935: pi. 3, fig. 10); Rio Oponcito, near Guanabanus; X 3. 274-276, ANSP, unregistered; casts of external moulds in decalcified mudstonc of Hemisinus (Verena) ava Pilsbry & Olsson, from type locality, near Zopffs; x 3. Dimensions. In mm. h br hap h/br sa BMZD, Para * BMZD, Para * BMZD, Para 78° BMZD, Cuming Colin. * = decollated or otherwise extensively damaged. Remarks. Verena crenocarina (S. Moricand) is not only the type but also the only living species known of the genus. The illustrations (Roxo 1924, Santos & Castro 1967) of Purpura woodwardi suggest that it is conspecific with V. crenocarina, and there can be no doubt it was correctly assigned to Verena by Santos & Castro. The relationship between V. crenocarina, and V. crenocarina ava (Pilsbry & Olsson) is discussed under the latter, below. V. guaduasensis (Anderson) (p. 256) is also very similar to both these subspecies. Other fossil species of Verena are all more acicular. Verena crenocarina ava (Pilsbry & Olsson, 1935) Figs 273-276 *v. 1935 Hemisinus (Verena) avus Pilsbry & Olsson: 15; pi. 3, figs 6, 7. *v 1935 Hemisinus (Verena) laevicarina Pilsbry & Olsson: 15; pi. 3, figs 10-12. 1969 ? Pyrgulifera avus (Pilsbry) [sic] Parodiz: 140; pi. 15, figs 8, 9. 1969 Aylacostoma (Verena) laevicarina (Pilsbry & Olsson) Parodiz: 145; pi. 15, figs 13, 14. LECTOTYPE of H. (V.) avus, selected herein: ANSP 13071a, original of Pilsbry & Olsson (1935: pi. 3, fig. 7), a broken mould in decalcified mudstone, ?
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