Pars 92 Perrinilla 1519 
1885 
1586 
1395 
*1912 
1909 
*1804 
1912 
Planorbina (Perrinilla) convoluta (Meek et Hayden). 
Planorbis convolutus, Meek and Hayden, (57a) Proc. Acad. Nat. 
Sci. Philadelphia VIII, p. 120. 
Planorbis convolutus, Meek and Hayden, (57b) Proc. Acad. Nat. 
Sci. Philadelphia VIII, p. 278. 
Planorbis convolutus, Meek and Hayden, (61b) Proc. Acad. Nat. 
Sci. Philadelphia XII, p. 431. 
Planorbis convolutus, Conrad, (67a) Smithsonian Misc. Coll. VIT, 
No. 200, p. 10. 
Planorbis convolutus, Meek, (76a) Report U. S, Geol. Survey 
of the Territories IX, p. 530, tab. XLII, fig. 11—12. 
Planorbis convolutus, White, (83a) Report U. S. Geol. Survey 
III, p. 447, tab. XXVII, fig. 16. 
Planorbis convolutus, White, (83c) 12th Annual Hheport U. S. 
Geol a. Geogr. Survey of the Territ,, p. 83. 
Planorbis convolutus, White, (86a) Bull U. S. Geol Survey. 
No. 34, p. 399 (11), 411 (23), tab. II, fig. 15. 
Planorbis aequalis, White, (95a) Bull. U. S, Geol. Survey, No. 
198. p. 80. 
Vorkommen .: Tritt bereits in den Laramie beds auf. 
M. Paleocán, Sparnacien: Wasatch beds: Evanston (Wyo- 
ming), Wales (Utah), Powder River (Montana). 
Plauorbina (Perrinilla) cordillerana (Hannibal). 
Helisoma (Perrinilla) Cordillerana, Hannibal, (12a) Proc. Ma- 
lacological Soc. London X, p. 161, tab. IV, fig. 34, VI, fig. 16. 
Vorkommen: (?U.) Eocán: Truckee Lake beds: Nevada. 
Bemerkungen: Vielleicht mit P, utahensis (Meek) iden- 
tisch. 
Planorbina (Perriuilla) leidyi (Meek et IHayden). 
Planorbis Leidyi, Meek and Hayden, (61a) Proc. Acad. Nat. 
Sci. Philadelphia XIT, p. 175. 
Planorbis Leidyi, Meek and Hayden, (61b) Proc. Acad. Nat. Sci. 
Philadelphia XII, p. 431, 
Planorbis Leidvi, Meek, (67a) Smithsonian Misc. Coll. VII, No. 
183. p.358 
Planorbis Leidyi, Meek, (76a) Report U. S. Geol. Survey of the 
Territories IX, p. 601, tab. XLV, fig. 3a—4d. 
Planorbis leidyi, White, (77c) Bull. U. S. Geol. and Geogr. Sur- 
vey of the Territories III, p. 613, 
Planorbis leidyi, White, Report U. S. Geol Survey III, p. 445. 
tab. XXXII, fig. 19—21. 
Planorbis leidvi, Grabau and Shimer, (09a) North American 
Index Fossils Invertebrates I, p. 820, Textfig. 1206 w, x. 
Vorkommen : O. Oligocán, Chattien: Ob. White River beds: 
Head of White River (Dakota). 
Planorbina (Perrinilla) pabloana (Cooper). 
Planorbis Pabloanus, Cooper, (04a) Proc. Californian Acad. Sci. 
Ser. 2, vol. IV, p. 109; tab. XXV. - an 9. 
Helisoma (Perrinilla) Pabloana, Hannibal, (12a) Proc, Mala- 
cological Soc. London'X, p. 161. 
Vorkommen: Miocün: Contracosta Lake beds (California). 
96* 
