Physa, J. ,V. 
Iighels, Proc. Boston Soc. 
. H. II. 1848 (1845), 21. 

 Planorbis, Studer, Nat. Anz. AUg. Schweiz. Gesellsch. III (12) 1820, 92. 

 Planorbis, 'V. H. Benson, J. Asiat. Soc. Bengal, V. 1836, 741. 

 Planorbis, H. E. Anton, Verz. Conch. 1839, 51. 

 Planorbulina, F. v. Hagenow, X. Jahrb. f. Min. 1842, 572. 

 Planulites, G. v. )1uenster, Die Planuliten, 1832, 14. 

 Pleurotoma, L. Reeve, Conch. Icon.-Pleurotoma, no. 97, 
Iay 1843. 

 Pleurotomaria, J. Hall, N. H. 
ew York (Pal. I.) 1847,43. 

 Polystomella, A. d'Orbigny, Ann. Sci. 
at. VII (27) Mar. 1826, 285 [no n.]. 

 Pterotrachea, S. d. Chiaje, Descr. An. invert. Sicilia, II. 18 4 1 , 94. 

 Pupa, J. P. R. Draparnaud, Tab. :\1011. France, 1801, 58. 

 Pupilla (Drap.), H. Beck, Index :\1011. :\Ius. Ch. Fred. (I) 1837, 84.-Pupa. 

 Radula, A. Valenciennes in Bronn, Ind. PaL 1848, IOï6 [no n.]. 

 Rotalia, A. d'Orbigny, Ann. Sci. Nat. VII (27) :\Iar. 1826, 275 [no n.]. 

 Rotalia (Orb.), H. G. Bronn, Index Pal. 1848, II03.-Gyroidina. [1826. 

 Rotalina, A. d'Orbigny, Mém. Soc. géo1. France, IV (I) 1840, 3z.-Gyroidina, 

 Rotella, H. C. Lea, P. Amer. Phil. Soc. III. 1843, 164 [no n]; Tr. Amer. 

 Phil. Soc., n. s. IX (3) Dec. 1846. 264 (umbilicata). 

 Serpula, F. v. Hagenow, X. jahrb. f. 
Iin. 1840,666. 

 Serpulites, E. F. V. Schlotheim, Die Petref. 1820, 96. 

 Spongia, C. S Rafinesque, Specchio Sci. II (12) Dec. 1814, 169. 

 Stomodonta (Drap ), :\1ermet, :\1011. Pyrén. orient. 1843, S3.-Pupa. 

 Struthiolaria, Bonelli in Bellardi & Michelotti, :\Iem. R. Ace. Sci Torino 

 [2] III. 1841, 123. 

 Trichotropis (Brown), 'V. l\Iacgillivray, Hist. :\1011. Aberdeen, I8.B. 330.- 

 Fusus. 

 Trochilites, E. F. Schlotheim, Tasch. :\Iin. 1813, no. 6, 102 [no n.]. 

 Trochus, F. C. L. Koch & Dunker, B. z. K. d. Norddeutsch. Oolith. 1837, 26. 

 Turbo, A. d'Orbigny, Prodr. Paléont. II [Nov.] 1850, 152. 

 Valvata, L. J. Fitzinger, Beitr. Landesk. Oesterr. Enns (Ver. Vater1. Gesch. 

 'Vien) III. 1833, II7. 

 umbilicata Volvaria (Mont.), T. Brown, 111. Conch. G. B. I. 1827, pI. xxx'-iii, f. 9.-Bulla. 

 umbilicata Vorticialis, H. D. de Blainville, Faune Française (18) :\Ialac. r828, 77. 

 umbilicatus Zonites (:Mont.), J. E. Gray in \V. Turton, :\Ian. L. & F. 'V. Shells, ed. 2, 

 )Iay 1840, I66.-Helix. 

 umbilicifera Corticaria, C. G. :\lannerheim in Gennar, Zeitschr. f. d. Entom. V. 18 44, 37 

 umbiliciformis Serpula, G. A. Goldfuss, Petref. German. I (3) 1831, 240. 

 umbiliciformis Spirorba (sic) (:\Iuenst.), H. :\1. Edwards in Lamarck, H N. Anim. S. Vert., 

 ed. 2, V. Dec. 1837, 6I5.-Spirillum in lÜt.; vide Serpula. 

 wnbilicus Gyrodus, J. L. R. Agassiz, Poiss. Foss. II (I), 16 (I833); II (2), 227 (1844). 

 umbilicus Pupa, J. R. Roth, :\1011. Orient. 1839, 20. 

 umbilicus Rotalia, C. G. Ehrenberg, Ber. Verh. k. pr. Ak. \Viss. 18 44, 95. 

 Umbla C. L. Bonaparte, Cat. met. Pesci Eur. 1846, 25.-P. 

 umbla Scaphiodon, J. J. Heckel in Russegger, Reise, I (2) 1843, 1020 & 1058 [no n.]. 

 umblae Distoma (Fab.), J. G. H. Zeder, Anleit. Eingeweidewürm. 1803, 2I2.-Fasciola, 

 umbonare Cardium, Lamarck, An. s. vert. VI (I) 1819, 20. [1780. 

 umbonaria Cyprina, Lamarck, H. 
. Anim. S. vert. V. 1818, 559 (sign. 36). [Cyprina. 

 umbonaria Venus (Lam.), L. Agassiz, N. D. Allg. Schweiz. Gesellsch. VII. I8.
5, 29.- 

 umbonata Anisorrhina (G. & P.), J. O. 'Vestwood, Arcana Entom. (12) :\Iar. 1843, 186.- 

 umbonata Arca, Lamarck, _-\.n. S. vert. VI (I) 1819, 37. [Gnathocera. 

 umbonata Biloculina, J. :\Iorris, Cat. Brit. Foss. 1843, 61 [no n.]. 

 umbonata Cardinia (Fisch.), A. d'Orbigny, Prodr. Paléont. 1. 1849 [Jan. 1850], 164.- 

 umbonatum Cardium, J. So\verby, Min. Conch. II. 1817, 128. [Unio. 

 umbonata Coryphe (K1.), ,V. S. :\I'Leay in A. Smith, IlL Zoot S. Afr. (Ins.) 1838, 31.- 

 umbonata Cyclas, H. E. _-\.nton, Verz. Conch. 1839, 13. [Gnathocera. 

 umbonata Cythere {\Yill.}, T. R. Jones, Cret. Entom. (Pal. Soc. III.) Aug. 1850, 12.- 

 Cytherina. 

 Cytherina, 'V. C. 'Villiamson, :\Iem. Lit. Phil. Soc. )Ianchester[2] VIII. 1848,79. 



umbilicata 

 wnbilicatus 

 wnbilicatus 

 wnbilicatus 

 umbilicata 

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 umbilicata 

 umbilicata 

 umbilicata 

 umbilicata 

 wnbilicata 

 umbilicata 

 umbilicata 

 umbilicata 

 umbilicata 

 umbellicata 



umbilicata 

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 umbilicata 

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umbilicata 



wnbilicatus 

 umbilicatus 

 wnbilicatus 

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wnbonata 



umbilicatus-umbonatus 



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