Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 14. 1989. (Budapest, 1989)
1886. Onustus glincus De Greg. - DE GREGORIO, p. 18, tav. XI, fig. 28-30. 1888. Onustus supraliasinus Vacek - GIOLI, p. 6, tav. I, fig. 4. 1893. Onuftus supraliasinus Vacek - BOTTO- MICCA, p. 171, 1899. Onustus supraliasinus Vacek - GRECO, p. 126, tav. DC, fig. 23. Material: three specimens in a good state of preservation (1886/5/63), see also Lamelliphorus levis Vacek? . Measurements: H HL HA D W A Pl. III: 8- 10 - 9 6.5 20 Pl. III: 3-7 - 11 6 22. 5 14 Description : This species has a rather large, low coeloconical shell with sigmoidal surface of the whorls. The periphery is sharply angular on the juvenile shells and bears a wide frill on the adult last whorl. The flat base is concave along the frill and excavated in the middle. The extremely prosocline peristome has a weak thickening on the columellarbasal lip. Slightly opisthocline to slightly prosocline, straight or hardly curved ribs ornament the whorls. These ribs are sharply angulate to the growth-lines, which are rather prosocline on the juvenile and extremely prosocline on the adult whorls with gradual transition. The ornament of the base consists of strongly opisthocyrt growth-lines, which may be riblet-like at the periphery of the basal deepening. Some obscure spiral lines appear also on the base of one specimen. Remarks: The shape of juvenile Lamelliphorus supraliasinus is comparable with L. rhombifer (Uhlig), but the first species has only one while the latter one bears two kinds of transverse riblets, none of which runs parallel with the growth-lines. There is a significant frill on L. supraliasinus even on the juvenile shell, but only a granulate carina is present on the periphery of L. rhombifer. Lamelliphorus sp. (cf. supraliasinus Vacek, 1886) Plate III: 11-12. 1886. Onustus levis n. sp. - VACEK, S. 108, Taf. XVIII, Fig. 17. Material : two specimens in a bad state of preservation (1886/5/64). Description and remarks: Two large, smooth inner moulds are the material, having measurements which do not preclude the possibility of belonging to Lamelliphorus supralia sinus (Vacek, 1886); see above. The special opisthocline-opisthocyrt lines on the whorls are traces of the basal growth-lines in thin remains of basal shell portions, resorbed not completely. The conditions of the material are not satisfactory to state independence of the "species" L. levis . Superfamily Strombacea Sv/ainson, 1840 Family APORRHAIDAE Adams and Adams, 1858 Genus Pietteia Cossmann, 1904 Subgenus Trietteia Conti and Szabó, 1987 Pietteia (Trietteia?) mipa (De Gregorio, 1886) Plate II: 12- 14. 1886. Alarian.sp. indet. - VACEK, S. 109, Taf. XVIII, Fig. 12-13. 1886. Alaria mipa De Greg. - DE GREGORIO, p. 19, tav. XII, fijr, lOa-b. Material: two fragmentary, rather poorly preserved specimens (1886/5/67). Description: The most prominent character in the shape of this species is the very low spiral angle on the shell part, following the juvenile whorls. Seemingly, the measurements of these whorls do not change, only the last whorl is obviously larger than the others. The
