ovaHs 

 oval is 

 ovaHs 

 ovaHs 

 ovaHs 

 ovalis 

 oval is 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovatis 

 ovalis 

 ovalis 

 ovalis 

 ovalis 

 oval is 

 ovalis 

 ovaHs 

 ovaHs 

 ovate 

 ovaHs 

 ovalis 

 ovalis 

 ovaHs 

 ovate 

 ovaHs 

 ovalis 

 ovalis 

 ovaHs 

 ovalis 

 ovaHs 

 ovaHs 

 ovalis 

 oval is 

 ovalis 

 ovaHs 



ovaHs 

 ovalis 

 ovaHs 

 ovalis 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 

 ovaHs 



ovaHs 

 oval is 



ovalis 



ovalis 



4 6 49 



Lutraria, J. Sowerby, )Iin. Conch. III. IBI9, .p. 

 Lutraria, 
Iuenster in G. A. Goldfuss, Petref. German. II (7) IB40, 257. 

 :\Iacrocheilus, F. 
I'Coy in Griffith, Syn. Carbo Lst. foss. Ireland, IB44, 29. 

 :\Iactra, J. Sowerby, )Iin. Conch. II. 1817, 136. 

 l\Iactra, A. A. Gould, Rep. Invert. 
Iassach. 1841, 53. 

 ::\lalachius, Laporte, Revue Entom. IV (I) IB36, 2B. 

 1\1arica plüll.), C. L. Koch, Deutsch. Crust., heft 12, 1837, tab. 8.-Hydrachna, 1776. 

 1\1egamerus, A. Dugès, Ann. Sci. Nat. [2] (Zoo1.) II. July 1834, 50 & 52. 

 Melania, I. Lea, P. Amer. Phil. Soc. II (24) Dec. 1842, 242. 

 l\1icrops (Schn.), J. \Vagler, Xat. Syst. Amph. 1830, 200.-Rana, 1799. 

 Migadops, G. R. \Vaterhouse, Ann. ::\Iag. 
. H. IX. Ap. IB42, 139. 

 Modiola, de Blainville, Diet. Sci. Nat. XXXI. 1824, 5Il. 

 Monas, C. G. Ehrenberg, Abh. ph.-K1. K. pro Ak. Wiss. 1830 (IB32) [1830], 64 [n. n.]. 

 Monas (Eumonas), Ehr.; C. ::\1. Diesing, Syst. Helminth. I. IB50, 25. 

 Murex, J. S. Schroeter, Archiv Zoo1. (\Viedemann) IV (2) 1805, 100. 

 ::\Iya, "V. ::\Iartin, Petro Derb. 1809, pI. 27. 

 1\1ya, F. A. Roemer, Verst. Norddeutsch. Oolith., Nachtrag, IB39, 42. 

 ::\Iytilus, Lamarck, An. S. vert. VI (I) IBI9, I2I. 

 Naesa, T. Say, J. Acad. 
at. Sci. Phil ad. I (16) Dec. IBI8, 484. 

 Xebria, Dejean, Spec. gén. Coléopt. V. 1831, 58I. 

 Kedyus (L.), J. F. Stephens, Nom. Brit. Ins., Aug. 1829, I3.-Curculio, 1761. 

 Xeritina, G. B. SO\verby, 11., Thes. Conch. II (10) 1849, 507. 

 
otaspis, C. L. Koch, Deutsch. Crust., heft 27, 1839, tab. 2I. 

 Xucula, Hehl in C. H. v. Zieten, Pétrif. \Vurt. (10) 1833, 76. 

 Xucula, J. De C. Sowerby in R. I. :l\Iurchison, Silurian System, Jan. 1839, 609. 

 Kycteropus, F. L. de Laporte in Brullé, H. N. Anim. artic. (Coléopt.) II. 1840, 203. 

 Omalium, Sturm; Dejean, Cata1. Coléopt. IB2I, 26 [no n.]. 

 Omophlus, F. L. de Laporte in Brullé, H. 
. Anim. artic. (Coléopt.) II. IB40, 24:-. 

 Opiestus, A. Chevrolat, Revue Entom. I (I) :\Iar. IB33, 31, & Descr. d'esp. nouv., 

 Oribates, C. L. Koch, Deutsch. Crust., heft 3, 1835, tab. 5. [no. 
. 

 Orthis, F. A. Roemer, Verst. Harzgeb. 1843, 10. 

 Orthoceras, J. Phillips, Geol. Yorksh. II. 1836, 23 8 . 

 Ostrea, E. Eichwald, Paleont. Rossii, I B 50, 47. 

 Pachydomus, F. ::\I'Coy, Ann. :\Iag. X. H. XX. Nov. IB47, 3 0 2. 

 Pachyodon, S. Stutchbury, Ann. 
Iag. N. H. VIII. Mar. 1842, 4 B 5. 

 Pachytes, F. "Y. Hoeninghaus, J ahrb. f. Min. 1830, 473 [no n.]. 

 Panopaea, J. De C. Sowerby, Tr. Geol. Soc. London [2] IV. Ið36, 34 0 . 

 Patella, S. 
ilsson, Petrif. Suec. 1827, 14. 

 Pedipes, C. B. Adams, Contr. to Conch. (3) Oct. IB49, 4I. 

 Peltis, W. S. ::\Iacleay, Annulosa Javaniea, 1825, 39. 

 Pentatoma, J. O. \Yestwood in F. \\T. Hope, Cat. Hemipt. 18 37, 39. 

 Pentremites, G. A. Goldfuss, Petref. German. I (2) IB29, I6I. 

 Peryphus, V. :\Iotshulski, 
Iém. présentés Ac. Imp. Sci. St Pétersb. Y (1-3) Xov. 

 IB44, 239. 

 Pholadomya (J. Sow.), J. De C. Sowerby, Min. Conch. VI (94) Jan. 1827, 86.- 

 Pholas, T. Say, Amer. J. Sci. II (I) Ap. 1820, 39. [Lutraria. 

 Phytonomus, Boheman in C. J. Schoenherr, Gen. et Sp. Curc. VI (2) 18 42, 37I. 

 Plagiostoma, J. Sowerby, ::\Iin. Conch. II. 1815, 27. 

 Pleurodon, S. V. \Vood, Mag. Kat. Hist., n. s. IV. :\Iay I B 40, 23 0 . 

 Pleuromya (l\Iuenst.), J. L. R. Agassiz, Etudes crit. 1\1011. foss. (4) 18 45, 234.- 

 Pogonocherus, Sch.; Dejean, Catal. Coléopt. 1821, 107 [no n.]. [Lutraria. 

 Producta, J. Phillips, Geol. Yorksh. II. 1836, 216. 

 Proteinus, J. F. Stephens (ex Kirby 
IS), Xom. Brit. Ins., Aug. 1829, 25 [no n.]; 

 & Ill. Brit. Ent. (:\Iand. V.) Jan. 1834, 335. 

 Pseudoliva, J. De C. Sowerby in F. Dixon, Geo1. Sussex, I B 50, 187. 

 Pullastra, F. ::\I'Coy in Griffith, Kot. foss. 
Itn. Lst. Ireland, 1842, 12 [no n.]; Syn. 

 Carb. Lst. foss. Ireland, 1 8 44, 55. 

 Purpura, H. D. de Blainville, X. Ann. 
Ius. H. X. (Paris) I [2] post ::\Iay IB32, 251. 



