. Bulletin of the British Museum (Natural History). . Fig. 139 Liris scalarioides (Etheridge). Pebasian; Puerto Narino, Colombia; Weeda Colin. GG21560; a, front, x 20; b, body whorl and aperture, x 50; c, oblique view of early spire whorls, x 50; d, oblique view of apex, x 100. See also Fig. 456, p. 354. Several records of these species are now included under L. scalarioides (Etheridge) (below), where comparisons between the two species are given. Lin's scalarioides (Etheridge, 1879) Figs 139-146, 456 *v 1879 Melania scalarioides Etheridge: 88; pi. 7, fig. 8. 1924 Melania scalarioide
. Bulletin of the British Museum (Natural History). . Fig. 139 Liris scalarioides (Etheridge). Pebasian; Puerto Narino, Colombia; Weeda Colin. GG21560; a, front, x 20; b, body whorl and aperture, x 50; c, oblique view of early spire whorls, x 50; d, oblique view of apex, x 100. See also Fig. 456, p. 354. Several records of these species are now included under L. scalarioides (Etheridge) (below), where comparisons between the two species are given. Lin's scalarioides (Etheridge, 1879) Figs 139-146, 456 *v 1879 Melania scalarioides Etheridge: 88; pi. 7, fig. 8. 1924 Melania scalarioides Etheridge; Roxo: 48. 1938 Liris minuscula (Gabb); de Greve: 92; pi. 1, figs 31-35; pi. 2, figs 1-9, 11-13; text-figs 12-18. ? 1966 Tryonia minuscula (Gabb); Taylor: 197 {pars). 1969 Liris minuscula (Gabb); Parodiz: 120. 1980 L/ram/mtfcw/a (Gabb); Costa: 881; pi. 2, figs l^t. 1981 Liris minuscula (Gabb); Costa: 643; pi. 1, figs 9, 10. Lectotype. GG22419, selected herein, the specimen figured by Etheridge, and the accompanying paralectotype GG22420 (both ex 97724); Late Caenozoic, Pebasian; Canama, Peru; Barrington Brown Colin. Other material studied. GG19852, GG19986-90, and GG21560-9 (over twenty shells), from Puerto Narino, Colombia; Weeda Colin. Further occurrences. Late Caenozoic, Pebasian; Iquitos, Peru (de Greve 1938); ?Cachoero das Tracoas, Brazil (Roxo 1924); Tres Unidos, Peru (Roxo 1924, Costa 1981); Afioramcnto cm Atalaia do Norte and CPCAN III, Sao Paulo de Oliven^a, Brazil (Costa 1980). Diagnosis. Large Liris with two or three carinate post-apical whorls; 14-25 sharply crested axial folds per whorl; spire angle 22°-32°. Description. The apex is much larger than that of L. minuscula. The first whorl is disjunct and the second biconvex. Variation is shown in the development of the next three whorls or so. Usually a carina appears at mid whorl- height, with a straight, sloping, ramp above and a convex whorl side below. Below the carina, there are sometimes traces of
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